JIS Z1707 Test methods of plastic films for food packaging

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Tensile test evaluates material resistance to stretching, measuring strength/elongation critical for quality control. UnitedTest offers universal tensile testers (10-600KN) compliant with ASTM/ISO standards, providing tailored solutions for metals, polymers, medical & industrial materials.

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JIS Z1707 Standard | Test Machines for Food Contact Plastic Films | UnitedTest

UnitedTest manufactures full-range testing instruments fully compliant with JIS Z1707 General rules of plastic films for food packaging, dedicated to Japanese food packaging film factories and third-party inspection labs.

JIS Z1707 unifies universal technical specs for single-layer & multi-layer plastic films under 250 μm that directly touch food. This standard excludes composite films with paper or metal foil layers. It mandates a complete set of physical & optical performance tests: tensile property, heat-seal strength, puncture resistance, static/kinetic friction, impact strength, WVTR, OTR, heat resistance, wetting tension, haze, surface roughness, anti-fog performance and shrinkage rate.

Our integrated test bench lineup covers all JIS Z1707 required inspection items, delivering consistent, audit-ready test data for food packaging film quality control, new material R&D and Japanese market compliance certification.

Full List of Tests Stipulated in JIS Z 1707:

1	Tensile force, elongation at break	N/15mm, %	ISO 527-3, ASTM D882, JIS K 7127
2	Tensile elastic modulus	MPa	ISO 527-3, ASTM D882, JIS K 7127
3	Heat-seal strength	N/15mm	Internal (Z1707)
4	Puncture strength	N	Internal
5	Static / kinetic friction	—	ISO 8295, ASTM D1894, JIS K 7125
6	Impact strength	J	ISO 7765-1, ASTM D1709, JIS K 7124-1 / -2
7	Water vapor transmission rate	g/(m²·24h)	ISO 15105-1, JIS K7129-1/2/4 or Z0208
8	Oxygen transmission rate	10⁻¹⁵ mol/(m²·s·Pa)	ISO 15105-1, JIS K7126-1 / -2
9	Heat resistance temp	°C	Internal (pouch method)
10	Wetting tension	mN/m	ISO 8296, ASTM D2578, JIS K 6768
11	Haze	%	ASTM D1003, JIS K 7136
12	Surface roughness	µm	ISO 4287, JIS B 0633
13	Anti-fog properties	qualitative	Internal
14	Shrinkage	%	K7133 / Z1709 etc.
15	Hygiene	—	Food Sanitation Act

Test stipulated in the JIS Z1707 details introduction:

1, Tensile Strength & Elongation at Break Test	Measure film resistance to stretching (tensile force N/15mm width) and ductility (elongation %) under tension; critical for winding, bag-making, and drop resistance during food transport.
Test Sample Information	Type 1 narrow parallel strip: Width 10–25 mm, gauge length L₀=50±0.5 mm, total length ≥150 mm Type 2 dumbbell specimen: Narrow parallel section width 6±0.4 mm, gauge length 25±0.25 mm, fillet radius 14±1 mm Specimen width calibrated to 15 mm for normalized tensile force calculation. Cut both MD and TD samples.
Test Equipment	UnitedTest Universal tensile testing machine (UTM), thickness gauge, caliper, cutting die for dumbbell specimens.
Test Procedure	Set tensile speed options: 200±20 mm/min, 300±30 mm/min or 500±50 mm/min; Clamp specimen with no slippage; initial jaw distance ≥50 mm; Stretch until complete rupture; record maximum tensile force F_T and rupture gauge length L.
2, Tensile Modulus (Elastic Modulus) Test	Indicator of film stiffness/rigidity; high modulus films are stiff, low modulus films are soft stretchable (e.g., stretch wrap). Determines winding flatness and printing registration stability.
Test Sample	Strip specimen width 10 mm, gauge length L₀=100 mm; measure thickness at 3 central points for average thickness.
Test Equipment	UnitedTest Universal tensile testing machine (UTM), with extensometer for micro strain measurement
Test Procedure	Test speed: 1 mm/min or 5 mm/min (low speed for linear elastic region capture) Record stress-strain curve; extract linear proportional elastic segment Average ≥3 specimens; report MD/TD separately.
3, Heat Seal Strength Test	Mechanical strength of film heat-sealed joints; prevents package opening/leakage during food heating, transportation and drop impact.
Test Sample	Cut 15 mm wide strips across the heat-seal seam; seal conditions (temperature, pressure, dwell time) agreed by both parties.
Test Equipment & Fixture	Heat sealer, UnitedTest Universal tensile testing machine (UTM)
Test Procedure	Open specimen 180°, clamp both ends of the sealed strip onto tensile machine jaws, align seal seam at jaw center Jaw initial spacing ≥50 mm; tensile speed same as tensile test Pull until seal delaminates or film breaks; record maximum rupture force (N/15mm width) Average ≥3 MD/TD samples; report seal process parameters in test report.
4, Puncture Strength Test	Resistance to sharp piercing by food bones, hard particles, packaging machinery edges; key for meat, grain, frozen food packaging prone to puncture leakage.
Test Sample	Square film pieces, full width random sampling, ≥3 replicates.
Test Equipment & Fixture	UnitedTest Tensile tester (UTM) fitted with standardized puncture test fixture, probe (tip radius R=0.5 mm)
Test Procedure	Fix specimen flat without wrinkles; probe penetration speed 50 mm/min Record maximum force (N) required to fully pierce the film Average all replicates; report average puncture strength value.
5, Static & Kinetic Friction Coefficient Test	Characterize film surface smoothness; low friction enables high-speed unwinding on printing/filling machines; high friction causes film sticking, winding blockage.
Test Sample	Large flat film pieces matching friction test sled size
Test Equipment	UnitedTest Friction coefficient tester (sled, horizontal test platform, force sensor)
6, Impact Strength (Dart Drop Impact Test)	Evaluate anti-drop, anti-collision performance; simulates package falling during logistics, frozen food impact. Critical for lightweight flexible packaging.
Test Sample	Circular flat film specimens without creases.
Test Equipment	Recommend UnitedTest Dart impact tester with graded weight darts, fixture ring for clamping film.
7, Water Vapor Transmission Rate (WVTR)	Measures moisture barrier to prevent food drying or damp mold growth. Use Water Vapor Transmittance Tester.
8, Oxygen Transmission Rate (OTR)	Evaluates oxygen barrier for delaying food oxidation/rancidity. Use Film Oxygen Transmission Rate (OTR) Tester.
9, Heat Resistance Test	Seal film pouch with water, heat under agreed temperature/time (boiling, retort, microwave). Check film deformation, delamination, pinholes after cooling; judges high-temperature cooking suitability.
10, Wetting Tension	Tests surface printability for ink adhesion during printing.
11, Haze Test	Optical transparency for retail food visibility. Use Transmission and Haze testing machine (Haze Meter)
12, Surface Roughness	Affects friction, anti-fog and printing performance. Can use UnitedTest surface roughness tester.
13, Anti-Fog Performance	Seal film with warm water inside 55°C constant tank; observe water droplet condensation on film surface. Required for fresh vegetable/fruit cold packaging.
14, Shrinkage Test	Condition film under agreed heating temperature; measure dimensional shrinkage percentage for shrink wrap packaging. Use UnitedTest Thermal Shrinkage Tester, Film heat shrinkage tester

Industry Application Fields

Food manufacturing & packaging converting: BOPP, CPP, PET, PE, PA single/multi-layer films for snack, frozen food, ready meals, retort food, fresh produce, confectionery wrapping.

Flexible packaging printing & lamination: Film substrate quality control before printing, solvent-free lamination, heat-seal bag production.

Food retail & cold chain: Anti-fog fresh film, stretch wrapping, vacuum packaging film for refrigerated/frozen goods.

Raw material film production: Factory incoming inspection, finished film release testing, batch quality certification.

Cross-border food trade: Japan’s mandatory reference standard for imported food plastic packaging materials; used by labs for export compliance testing to Japanese market.

Why This Standard Is Critical for Food Packaging Plastic Films

Unified mechanical benchmark: Mechanical failures (tearing, puncturing, seal breakage) are the top cause of food spoilage, leakage and contamination. Standardized mechanical tests eliminate inconsistent lab results between suppliers and buyers.

Food safety linkage: All film performance testing is paired with food sanitation compliance; defective films with poor barrier/heat resistance risk food oxidation, mold growth or migration of additives under heating.

Processing compatibility guarantee: Mechanical properties (tensile modulus, friction coefficient, heat seal strength) directly decide runnability on high-speed printing, bag-making and filling machines. Films failing standard mechanical specs cause frequent machine downtime.

Cold & thermal storage adaptability: Impact strength, heat resistance, shrinkage cover frozen, microwave, retort high-temperature food scenarios.

Trade dispute resolution: Annex A provides reference performance grades for film selection, acting as objective technical evidence for purchase contracts between film suppliers and food manufacturers.

Keywords: UnitedTest JIS Z1707 testing machine, JIS Z1707 food contact plastic film tester, <250μm food packaging multi-index test equipment, JIS Z1707 WVTR OTR haze friction shrinkage tester, food plastic film tensile heat seal puncture impact test bench, Japanese food packaging film compliance inspection instrument.

WDW Series Computer Control Electronic Universal Testing Machine made by UNITEDTEST range from 100N to 600KN load capacity with various models like single columns, table type, door frame type etc., is used to perform tension, compression, flexure/bending, shearing, peeling etc., test for metal and nonmetal specimens.

Electronic extensometer is an electronic measuring instrument used to accurately measure the small deformations (elongation or shortening) of materials during loading.

ASTM F1306 Penetration Resistance test of plastic film describes a method with very similar objectives for measurement of flexible barrier films and laminates. It uses an indenter with a tip radius of 1.6 mm and a conical shaft with a 6° angle.

XJB-30E Heavy duty frame falling dart impact testing machine mainly used to test plastic, film, or sheet thickness below 1mm, impact by falling dart, check the energy when 50% of test specimen broken. Conform with standard: ISO 7765-1, ASTM D1709

Coefficient of Friction Tester is professionally suitable for measuring the static friction coefficient and dynamic friction coefficient when plastic film and sheet, rubber, paper, cardboard, woven bag, fabric etc., Conform with ISO 8295, ASTM D1894.

Water vapor transmittance tester is a set of industrial, efficient and intelligent test system, which is suitable for the determination of water vapor transmittance of plastic film, composite film, medical, construction and other materials.

Adopts advanced electrochemical coulometric detection method for accurate, time-efficient oxygen transmission rate analysis for medium and high barrier packaging materials. Conform with ISO 15105-2, ASTM D3985. Key testing indicators Oxygen Transmission Rate (OTR), oxygen volume passing through.

Transmission and Haze testing machine (General type) can easily realize ASTM D1003 non compensating method, ISO 13468 compensating method, full transmittance and haze testing. The open sample chamber can be tested vertically or horizontally to adapt to more tested samples.

Professional film heat shrink tester is precision lab equipment engineered to evaluate thermal shrinkage characteristics and thermal dimensional stability of diverse raw materials, including plastic films. compliant with international testing standards ASTM D2732 and ISO 11501.

Q1: What is JIS Z 1707:2019, and why is this standard important for food plastic films?

A: JIS Z 1707:2019 is Japan’s core industrial standard for single/multi-layer plastic food contact films (<250 μm thick). It unifies visual inspection, dimensional tolerances, 15 physical/mechanical/barrier test methods, specimen rules and reporting requirements.

Its importance:

Eliminates inconsistent test results between film suppliers, converters and food manufacturers with standardized test atmospheres and procedures.

Mechanical tests (tensile, puncture, impact, heat seal strength) directly prevent package breakage, leakage and food contamination during printing, bag-making, transport and storage.

Mandates aligned testing with JIS K plastics test series to guarantee cross-lab repeatability.

Acts as mandatory technical reference for all plastic food packaging imported/sold in Japan, resolving commercial disputes via objective performance benchmarks.

Links physical performance to food safety: poor barrier, heat resistance or mechanical strength accelerates food oxidation, mold growth and additive migration under heating/refrigeration.

Q2: Which films are NOT covered by JIS Z 1707:2019?

A: Two main exclusions:

Multi-layer composite films containing paper or metal foil as structural layers (aluminum foil laminates fall outside this standard).

Films thicker than 250 μm.

It only applies to pure polymer single/multi-layer films directly contacting food (PE, CPP, BOPP, PET, PA, stretch wrap, retort film, fresh produce anti-fog film).

Q3: How to sample specimens for mechanical tests to meet JIS Z 1707 requirements?

A: Mandatory sampling rules:

Cut specimens evenly across the full width of the film roll, to capture thickness and property variations across the roll.

Prepare separate MD and TD specimens for every mechanical test (film stretching during extrusion creates directional strength differences).

Minimum 3 replicate specimens per direction for average calculation; discard wrinkled, scratched or pinholed samples.

Avoid sampling from roll edge regions with uneven winding or damage.

Q4: What tensile specimen shapes and test speeds are allowed under JIS Z 1707?

A: Two valid specimen types:

Rectangular strip: 10–25 mm width, gauge length 50 mm, total length ≥150 mm

Dumbbell specimen: narrow parallel section width 6 mm, gauge length 25 mm, fillet radius 14 mm

Permitted tensile test speeds (agreed between buyer and supplier): 200±20 mm/min, 300±30 mm/min, or 500±50 mm/min. All replicates must use identical speed for consistent comparison.

Q5: Why must we test both MD and TD directions for tensile modulus and tensile strength?

A: Extruded/cast plastic films undergo uniaxial stretching during production, creating strong anisotropy:

MD (machine direction): Higher tensile modulus, lower elongation (stiffer, less stretchable).

TD (transverse direction): Lower modulus, higher elongation (softer, more ductile).

If only one direction is tested, lab data will misrepresent real processing performance (e.g., TD tearing during horizontal bag sealing). JIS Z 1707 mandates separate recording and reporting of MD/TD mechanical values.

Q6: Two dart impact test methods are referenced in JIS Z 1707: JIS K7124-1 and K7124-2. What is the difference, and which one to choose?

A: JIS K7124-1 (Staircase dart method): Simple free-fall dart test, widely used for routine factory incoming inspection, outputs impact failure weight (g).

JIS K7124-2 (Instrumented penetration dart): Captures full force-displacement impact curve for advanced material R&D.

Clause 7.7 allows either method; selection is negotiated by buyer and supplier, and the test report must clearly state which method was used.

Q7: What mandatory mechanical test data must be included in a JIS Z 1707 compliant test report?

A: Clause 7.17 requires all below mechanical indexes to be recorded:

Tensile force (N/15mm width)

Elongation at break (%)

Tensile elastic modulus (MPa)

Heat seal strength (N/15mm width)

Puncture strength (N)

Static friction coefficient

Kinetic friction coefficient

Dart impact strength

Plus test conditions: conditioning atmosphere, specimen direction (MD/TD), test speed, specimen dimension, testing date and equipment model. All numerical results must be rounded per JIS Z8401.

Q8: How do JIS Z 1707 mechanical test results help reduce packaging production downtime?

A: Mechanical properties directly determine machine runnability:

Proper friction coefficient prevents film sticking/slipping on high-speed printing and bag-making lines.

Balanced tensile modulus and elongation avoid web breakage during winding and lamination.

Qualified heat seal strength eliminates frequent seal leakage rework.

High puncture and impact strength reduce product damage during automated filling and pallet transport.

Films failing JIS mechanical specs cause frequent machine stops, waste film and rejected finished food packages.

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