: Generally applies to films with a thickness of less than
To bear the JIS mark, a film must pass a battery of physical tests. This is the core technical feature of the standard:
The percentage increase in length before the film breaks. jis z 1707
JIS Z 1707 sets mandatory tests for the following properties:
These tests are vital for determining a film's ability to protect food from environmental factors, which directly impacts shelf life. : Generally applies to films with a thickness
: Measures the maximum stress the film can withstand while being stretched. Standard values often required for edible packaging are around
The standard also covers dimensional tolerances and visual acceptance criteria: : Measures the maximum stress the film can
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
Tensile properties determine how a film behaves under pulling forces — a critical aspect for processes such as form‑fill‑seal (FFS), handling, and end‑use. While JIS Z 1707 references JIS K 7127 for the detailed tensile testing methodology, the standard itself includes specifications for sample preparation, test speed, and acceptance criteria.
| | Title | |---|---| | JIS Z 1709 | Packaging — Heat‑shrinkable plastic films | | JIS Z 1712 | Oriented polypropylene films for packaging | | JIS Z 1713 | Cast polypropylene films for packaging | | JIS Z 1714 | Biaxially oriented nylon films for packaging | | JIS Z 1715 | Biaxially oriented PET films for packaging | | JIS Z 1718 | Carry bags made of polyethylene film | | JIS Z 0238 | Testing methods for heat‑sealed flexible packages | | JIS K 7127 | Testing method for tensile properties of plastic films and sheets |
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