GB/T 33319-2025 Plastics—Polyethylene compounds for breathable film

GB/T 33319-2016 Plastics—Polyethylene compounds for breathable film

GB/T 1033.1-2008 Plastics—Methods for determining the density of non-cellular plastics—Part 1:Immersion method,liquid pyknometer method and titration method GB/T 1037-1988 Test method for water vapor transmission of plastic film and sheet—Cup method GB/T 1037-2021 Test method for water vapor transmission of plastic film and sheet—Desiccant method and water method GB/T 1040.2-2006 Plastics—Determination of tensile properties—Part 2:Test conditions for moulding and extrusion plastics GB/T 1040.2-2022 Plastics—Determination of tensile properties—Part 2:Test conditions for moulding and extrusion plastics GB/T 1844.1-1995 Symbols of plastics and resins—Part 1:Basic polymers and their special characteristics GB/T 1844.1-2008 Plastics—Symbols and abbreviated terms—Part 1:Basic polymers and their special characteristics GB/T 1844.1-2022 Plastics—Symbols and abbreviated terms—Part 1:Basic polymers and their special characteristics GB/T 1845.2-2006 Plastics—Polyethylene(PE) moulding and extrusion materials—Part 2:Preparation of test specimens and determination of properties GB/T 1845.2-2021 Plastics—Polyethylene (PE) moulding and extrusion materials—Part 2:Preparation of test specimens and determination of properties GB/T 2035-1996 Terms and definitions for plastics GB/T 2035-2008 Terms and definitions for plastics GB/T 2035-2024 Plastics—Vocabulary GB/T 2547-1981 Plastic resins—Sampling GB/T 2547-2008 Plastic resins—Sampling GB/T 2918-1998 Plastics—Standard atmospheres for conditioning and testing GB/T 2918-2018 Plastics—Standard atmospheres for conditioning and testing GB/T 3682.1-2018 Plastics—Determination of the melt mass-flow rate(MFR)and melt volume-flow rate(MVR)of thermoplastics—Part 1:Standard method GB/T 6284-1986 Chemical products for industrial use—General method for determination of water content—Gravimetric method GB/T 6284-2006 Chemical products for industrial use—General method for determination of water content—The loss of mass on drying method GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 9345.1-2008 Plastics—Determination of ash—Part 1:General methods GB 15979-2002 Hygienic standard for disposable sanitary products GB 15979-2024 Hygienic requirements for disposable sanitary products GB/T 17037.1-1997 Injection moulding of test specimens of thermoplastic materials—Part 1:General principles and moulding of multipurpose and bar test specimens GB/T 17037.1-2019 Plastics—Injection moulding of test specimens of thermoplastic materials—Part 1:General principles,and moulding of multipurpose and bar test specimens GB/T 31331-2014 Requirement and identification for environmental protection of modified plastics HG/T 4768.5-2014 Pigments and extender pigments, Evaluation of dispersion in plastics, Part 5: Determination of colorant dispersion by heating and melt extrusion method SH/T 1541.1-2019 Plastic particle appearance test method - Part 1: Visual method