How many mainstream models are there in BOPP? (thickness, width, colour)
BOPP films commonly used include: ordinary biaxially oriented polypropylene film, heat sealing BOPP film, cigarette packaging film, BOPP BOPP pearl film, metal film, Matt Film etc.. The performance parameters and main uses of various films are as follows:
BOPP heat sealing filmUses: mainly used for printing, bag making, etc..Performance: * high clarity and gloss * excellent heat sealing strength* excellent printing performance * good antistatic properties and smoothnessCommonly used thickness: 20, 25, 30, 40, 45 mThickness tolerance: + 3% (beta ray thickness)Performance unit typical valueThe tensile strength of MD MPa = 120, TD = 220Elongation of MD% = 180 TD = 80The heat shrinkage rate of MD% = 5 TD = 4Static and dynamic friction coefficient is less than or equal to 0.8 is less than or equal to 0.8Haze% = 4The heat sealing strength of N/15mm = 2Wetting tension mN/m = 38The water vapor permeability of g/ (M2 24h 0.1mm) is less than or equal to 2BOPP cigarette packing filmPurpose: high speed cigarette packing.Performance: * high transparency and gloss * excellent heat sealing strength * high water vapor barrier performance* excellent stiffness * excellent packing spread * suitable for high speed packingCommonly used thickness: 21, 22, 23, 25 mThickness tolerance: + 3% (beta ray thickness)Performance unit typical valueThe tensile strength of MD MPa = 125, TD = 220Elongation of MD% = 220 TD = 80The heat shrinkage rate of MD% = 4.5 TD = 3.5The dynamic friction coefficient is less than 0.28The young's modulus of MD N/mm2 = 2200Haze% = 4The heat sealing strength of N/15mm = 2.5Gloss% = 80The water vapor permeability of g/ (M2 24h 0.1mm) is less than or equal to 2BOPP pearlescent filmUsage: used for printed food and daily necessities packing.Performance: * excellent heat sealing strength * excellent UV barrier properties* pearl gloss upscale appearance * high barrier propertyCommonly used thickness: 20, 25, 30, 35, 40, 45, MThickness tolerance: + 3% (beta ray thickness)Performance unit typical value
BOPP is the abbreviation of "Biaxially Oriented Polypropylene", that is biaxially oriented polypropylene film. It is the production of polypropylene polymer melt is made first by a narrow nose or thick sheet, then stretched in a dedicated machine, at a certain temperature and speed setting, at the same time or step by step in two perpendicular directions (vertical and horizontal) on the stretch, and after appropriate cooling or heat treatment or special processing (such as corona and coating) made of thin film.
