These tests are vital for determining a film's ability to protect food from environmental factors, which directly impacts shelf life.
Bags for vegetables, fruits, bread, and frozen foods.
The standard defines several physical and mechanical performance metrics that plastic films must meet to be considered suitable for food packaging: jis z 1707
| Test Item | Key Parameters | Purpose | | :--- | :--- | :--- | | (耐熱温度試験) | Uses saturated brine solution inside a pouch; tested at various temperatures/times (e.g., 120°C/60s). | Determines the maximum temperature a film can withstand without deforming or delaminating. | | Coefficient of Friction (Static & Kinetic) (静摩擦係数及び動摩擦係数) | Measures resistance to sliding, typically film-to-film. | Essential for ensuring films run smoothly on high-speed packaging machinery. | | Haze Test (ヘーズ試験) | Performed with a haze meter, following methods like JIS K 7136. | Measures the clarity or cloudiness of a transparent film. | | Wet Tension Test (ぬれ張力試験) | Uses a series of test solutions with increasing surface tension. | Evaluates surface treatment for printability and adhesive lamination; often references JIS K 6768. | | Anti-fogging Property Test (防曇性試験) | Evaluates a film's ability to prevent condensation on its inner surface. | Crucial for fresh produce packaging to ensure product visibility. | | Shrinkage Test (収縮性試験) | Measures dimensional change when heat is applied. | Important for shrink-wrap films used for bundling or tamper evidence. | | Surface Roughness Test (表面粗さ試験) | Typically measures parameters as defined in JIS B 0601. | Affects print quality, coefficient of friction, and the optical properties of the film. |
: The purpose of issuing such a standard would be to ensure quality, safety, and efficiency in packaging. This helps manufacturers and consumers by providing clear guidelines and specifications for packaging products. These tests are vital for determining a film's
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Compliant film rolls must be clearly labeled with: | Determines the maximum temperature a film can
To demonstrate compliance, manufacturers typically provide:
| | Test Category (English) | Section in JIS Z 1707:2019 | | :--- | :--- | :--- | | 引張力及び引張破壊伸び試験 | Tensile Strength and Elongation at Break Test | 7.2 | | 引張弾性率試験 | Tensile Modulus of Elasticity Test | 7.3 | | ヒートシール強さ試験 | Heat Seal Strength Test | 7.4 | | 突刺し強さ試験 | Puncture Strength Test | 7.5 | | 静摩擦係数及び動摩擦係数試験 | Static and Kinetic Friction Coefficient Test | 7.6 | | 衝撃強さ試験 | Impact Strength Test | 7.7 | | 水蒸気透過度試験 | Water Vapor Transmission Rate Test | 7.8 | | 酸素ガス透過度試験 | Oxygen Gas Transmission Rate Test | 7.9 | | 耐熱温度試験 | Heat Resistance Temperature Test | 7.10 | | ぬれ張力試験 | Wetting Tension Test | 7.11 | | ヘーズ試験 | Haze Test | 7.12 | | 表面粗さ試験 | Surface Roughness Test | 7.13 | | 防曇性試験 | Anti-fogging Property Test | 7.14 | | 収縮性試験 | Shrinkage Property Test | 7.15 |
The standard specifies thickness ranges for different applications. Film thickness is a critical parameter that affects mechanical properties, barrier performance, and processability.