biaxially-oriented film synthetic paper

Ingredients

polypropylene (PP), inorganic filler (CaCO3)

Preparation Steps

Original Recipe Text

The material is constructed as a three-layered extruded polypropylene (PP) film. It is manufactured without wood pulp or biological materials. It includes an inorganic filler of Calcium Carbonate (CaCO3) to achieve specific optical and surface properties (p. 83).

Evidence

"Paper 1: Yupo (manufacturer: Yupo Corporation, Japan) is a biaxially-oriented film synthetic paper. It consists of three extruded polypropylene (PP) layers with inorganic filler (CaCO3) and does not contain wood pulp or other bio materials."

Remarks

Paper 1 demonstrated the highest stability among all samples. It retained the highest ISO brightness (99.9% unaged) across all accelerated ageing techniques (dry-heat, moist-heat, and xenon lamp exposure) (p. 86). Even after 12 days of ageing, it showed no yellowing (p. 98). In mechanical tests, it exhibited the highest zero-span tensile strength and was significantly more extensible (elongation at break) than cellulose-based samples (p. 11). SEM imaging showed it to have the highest level of surface uniformity (p. 17).