Precise measurement is required, often using equipment like digital calipers as specified in related standards like JIS B 7507 Barrier Properties: The standard references methods for testing Water Vapor Transmission Rate (WVTR)
Food packaging must endure significant tension during manufacturing. The tensile property testing follows standard guidelines (often drawing from JIS K 7127 / ISO 527 ): jis z 1707
The standard restricts the presence of heavy metals like lead, cadmium, and mercury, which can be present in inferior plasticizers or colorants. Precise measurement is required, often using equipment like
is a critical Japanese Industrial Standard titled " General rules of plastic films for food packaging ". It establishes the foundational guidelines and testing protocols for plastic materials directly in contact with food. Scope & Purpose freezer storage)
One of the strongest features of the standard is how it strictly categorizes films based on their chemical composition. This helps manufacturers and consumers choose the right film for the right application (e.g., microwave safety vs. freezer storage).
The primary focus of JIS Z 1707 is safety. It dictates that films must not release harmful substances into the food, such as heavy metals or harmful chemical residues. 2. Physical and Mechanical Strength