Standards for testing water-soluble membranes

The fast-dissolving water-soluble plastic film produced by our company is tested according to the following standards:

u003cbru003e 1. Appearance: The appearance is basically smooth and flat, without obvious dents, convex marks, bubbles, impurities, ripples, cracks and other defects. among them:

u003cbru003e (1) Impurities, diameter ≤0.8mm, quantity ≤25/square meter

u003cbru003e (2) Air bubbles, diameter ≤1.0mm, quantity ≤25/square meter

u003cbru003e (3) Wrinkles, a small amount is allowed

u003cbru003e (4) The neatness of the end face, ≤2mm

u003cbru003e 2. Size deviation: width ±5mm, thickness ±0.005mm, length ±1m

u003cbru003e 3. The same roll film joint: ≤1pc/100m

u003cbru003e 4. Technical indicators:

u003cbru003e (1) Tensile strengthu003e 25Mpa

u003cbru003e (2) Elongation at breaku003e180%

u003cbru003e (3) Right angle tearing forceu003e80KN/m

u003cbru003e 5. Water solubility: start to dissolve