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GB/T 3830-2024: Calendered film and sheet from flexible polyvinyl chloride Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 3830: Historical versions
Similar standardsGB/T 3830-2024: Calendered film and sheet from flexible polyvinyl chloride---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3830-2024GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 83.140.10 CCS G 33 Replacing GB/T 3830-2008 Calendered Film and Sheet from Flexible Polyvinyl Chloride Issued on: AUGUST 23, 2024 Implemented on: MARCH 1, 2025 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 4 1 Scope... 6 2 Normative References... 6 3 Terms and Definitions... 7 4 Product Classification... 7 5 Requirements... 8 5.1 Appearance... 8 5.2 Dimensions... 9 5.3 Physical and Chemical Properties... 9 6 Test Methods... 12 6.1 Sampling... 12 6.2 Specimen Conditioning and Test Environment... 12 6.3 Appearance... 12 6.4 Thickness... 12 6.5 Width and Length... 12 6.6 Tensile Strength and Tensile Fracture Strain (or tensile fracture nominal strain)... 12 6.7 Right Angle Tear Strength... 12 6.8 Dimensional Change Rate... 12 6.9 Heating Loss Rate... 13 6.10 Water Extraction Rate... 13 6.11 Oil Resistance... 14 6.12 Phthalates... 14 6.13 Migratable Elements... 14 6.14 Short Chain Chlorinated Paraffins... 14 6.15 Haze... 14 6.16 Wetting Tension... 14 6.17 Low-temperature Elongation... 14 6.18 Cold-cracking Temperature... 14 7 Inspection Rules... 15 7.1 Batch... 15 7.2 Sampling... 15 7.3 Inspection Classification... 15 7.4 Judgment Rules... 16 Calendered Film and Sheet from Flexible Polyvinyl Chloride1 ScopeThis document specifies the requirements for the classification, appearance, dimensions and physical and chemical properties of calendered film and sheet from flexible polyvinyl chloride (hereinafter referred to as “products”), describes the test methods for the products, and specifies the product inspection rules, marking, packaging, transportation and storage requirements. This document is applicable to the production, inspection and sales of smooth-surface or light- patterned calendered films and sheets from flexible polyvinyl chloride produced by the method of calendering by adding plasticizers, stabilizers and other additives to suspension polyvinyl chloride resin.2 Normative ReferencesThe contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 1040.3 Plastics - Determination of Tensile Properties - Part 3.Test Conditions for Films and Sheets GB/T 2035-2008 Terms and Definitions for Plastics GB/T 2410 Determination of the Luminous Transmittance and Haze of Transparent Plastics GB/T 2828.1-2012 Sampling Procedures for Inspection by Attributes - Part 1.Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection GB/T 2918 Plastics - Standard Atmospheres for Conditioning and Testing GB/T 6672 Plastics Films and Sheeting - Determination of Thickness by Mechanical Scanning GB/T 6673 Determination of Length and Width of Plastics Film and Sheeting GB 6675.4-2014 Safety of Toys - Part 4.Migration of Certain Elements GB 11121-2006 Gasoline Engine Oils GB/T 12027 Plastics - Film and Sheeting - Determination of Dimensional Change on Heating GB/T 14216 Plastics - Film and Sheeting - Determination of Wetting Tension GB/T 22048 Determination of Certain Phthalate Esters in Toys and Children’s Products GB/T 22930.1 Leather and Fur - Chemical Determination of Metal Content - Part 1.Extractable Metals GB/T 40263 Textiles - Determination of Short Chain Chlorinated Paraffins GB/T 41792 Plastics - Film and Sheeting - Determination of Cold-crack Temperature QB/T 1130 Plastics Angle Tear Performance Test Method3 Terms and DefinitionsThe terms and definitions defined in GB/T 2035-2008 are applicable to this document.4 Product Classification4.1 The classification of products by thickness is shown Table 1. 4.2 The classification of products by haze is shown Table 2. 4.3 The classification of products by purposes is shown Table 3. 4.4 The classification of products by whether subsequent printing is required is shown Table 4.5 Requirements5.1 Appearance The appearance shall comply with the provisions of Table 5, and the cumulative allowable number and dispersion of black spots and impurities shall comply with the provisions of Table 6.When there is an overlap in product categories, the category with the highest indicator requirements shall be followed. There shall be no joints in the middle of the product roll.6 Test Methods6.1 Sampling The samples shall be randomly selected from each batch of delivered products. After removing at least 5 layers of the surface of the sampled roll, the samples shall be cut, and the longitudinal direction of the product shall be marked on the samples. 6.2 Specimen Conditioning and Test Environment Unless otherwise specified, under the standard environment of temperature (23 2) C and relative humidity (50 10) % specified in GB/T 2918, the specimen conditioning time shall be not less than 4 h, and the test shall be carried out under this condition. 6.3 Appearance Visually inspect under natural light and measure with corresponding measuring tools. The particle size of black spots and impurities shall be measured with a 10-fold or more magnifying glass with a minimum division value of not less than 0.1 mm. 6.4 Thickness In accordance with the provisions of GB/T 6672, carry out the test. 6.5 Width and Length In accordance with the provisions of GB/T 6673, carry out the test. 6.6 Tensile Strength and Tensile Fracture Strain (or tensile fracture nominal strain) Test in accordance with the provisions of GB/T 1040.3.Use Type 2 specimen with a width of (10.0 0.2) mm and a test speed of (200 10) mm/min. The test results are expressed as the arithmetic mean of all measured values of the specimen, with the tensile strength retained to the first decimal place and the tensile fracture strain (or tensile fracture nominal strain) retained to the integer place. 6.7 Right Angle Tear Strength Test in accordance with the provisions of QB/T 1130.Take a single piece specimen and retain the integer place. 6.8 Dimensional Change Rate Test in accordance with the provisions of GB/T 12027.The test temperature is (100 2) C and the duration is 30 min. 6.9 Heating Loss Rate Cut 3 specimens of 40 mm 60 mm, place the group of specimens in a desiccator for 24 hours, then, take them out, and weigh them piece by piece to an accuracy of 0.1 mg. Place the group of specimens in a non-air-blasting oven at (100 2) C, hang the specimens on the same horizontal plane with a distance of no more than 80 mm from the temperature measuring device, and no less than 50 mm from the edge of the oven. The distance among the specimens shall be no less than 30 mm. After 6 hours of constant temperature, take them out and immediately place them in a desiccator to cool to room temperature. Weigh them piece by piece again to an accuracy of 0.1 mg. The heating loss rate is calculated in accordance with Formula (1). Where, n---the heating loss rate; m0---the mass of the specimen before heating, expressed in (g); m---the mass of the specimen after heating, expressed in (g). Calculate the arithmetic mean of the test results of three specimens and retain the first decimal place. 6.10 Water Extraction Rate Cut 3 specimens of 50 mm 100 mm, place the group of specimens in a desiccator for 24 hours, then, take them out, and weigh them piece by piece to an accuracy of 0.1 mg. Place the group of specimens in a 500 mL beaker, pour 200 mL of distilled water into the beaker, and sink the specimens into the water (if the specimens float on the water surface, use a weight tied by polyamide yarns to make them sink. The specimens shall not touch each other or stick to the wall of the beaker). Place the beaker at a constant temperature of (50 2) C. After 24 hours, take out the specimens from the beaker, place each specimen between 2 pieces of dry absorbent paper to absorb the moisture, then, place the specimens in an oven at (50 2) C for 8 hours, take them out and cool them in a desiccator to room temperature. Weigh each piece to an accuracy of 0.1 mg. The water extraction rate is calculated in accordance with Formula (2). Where, q---the water extraction rate; M0---the mass of the specimen before the water extraction test, expressed in (g); M---the mass of the specimen after the water extraction test, expressed in (g). Calculate the arithmetic mean of the test results of three specimens and retain the first decimal place. 6.11 Oil Resistance With the longitudinal direction as the length direction, cut 3 specimens of 100 mm 50 mm, and place the group of specimens in the engine oil with a temperature of (60 1) C and performance meeting the requirements of SG 0W20 model in GB 11121-2006 for 5 hours, then, take out and cool to room temperature. After using a neutral detergent to gently wipe the surface of the specimens, fold the specimens 180 along the length direction one by one, then, flatten them and check the folded part, and judge with the worst specimen. 6.12 Phthalates Test in accordance with the provisions of GB/T 22048. 6.13 Migratable Elements Prepare and extract in accordance with the provisions of 8.2 in GB 6675.4-2014, and determine in accordance with the provisions of GB/T 22930.1. 6.14 Short Chain Chlorinated Paraffins Test in accordance with the provisions of GB/T 40263. 6.15 Haze Test in accordance with the provisions of GB/T 2410. 6.16 Wetting Tension Test in accordance with the provisions of GB/T 14216. 6.17 Low-temperature Elongation Test in accordance with the method in Appendix A. 6.18 Cold-cracking Temperature Test in accordance with the provisions of GB/T 41792.7 Inspection Rules7.1 Batch Products are inspected in batches. Products produced with the same equipment, of the same category, formula, thickness and width are considered a batch. The quantity of each batch shall not exceed the shift output or 8 t. 7.2 Sampling The inspection of appearance and dimensions shall be carried out in accordance with the provisions of GB/T 2828.1-2012, using a secondary sampling scheme with general inspection level II and acceptance quality limit AQL of 6.5.The batch, sample, and judgment array are shown in Table 11. The physical and chemical properties shall be inspected by randomly selecting one roll from the products that have passed the inspection of appearance and dimensions. Table 11 -- Sampling Scheme 7.3 Inspection Classification 7.3.1 Exit-factory inspection The exit-factory inspection items are appearance, thickness, width, length, tensile strength, tensile fracture strain (or tensile fracture nominal strain), right angle tear strength and dimensional change rate in Chapter 5. Batch/roll Sample Sample Volume Cumulative Sample Volume Acceptance AC Rejected Re First First First First First First Second Second Second Second Second 7.3.2 Type inspection The inspection is carried out in accordance with all the requirements specified in Chapter 5. Under one of the following circumstances, type inspection should be carried out. a) Pattern evaluation of products or transfer of old products to other factories for production; b) After formal production, if there are major changes in materials and processes that may affect product performance; c) When production has been suspended for more than 3 months, and then, resumed; d) When the exit-factory inspection results are significantly different from the previous type inspection; e) Every 12 months of normal production. 7.4 Judgment Rules 7.4.1 Quality judgment of sample units The appearance and dimensions of the samples are inspected item by item in accordance with all the items listed in 5.1 and 5.2.If all the inspected items are qualified, then, the sample unit is judged to be qualified. 7.4.2 Quality judgment of qualified batches The appearance and dimensions of the samples are judged in accordance with the provisions of GB/T 2828.1-2012. The physical and chemical properties of the samples are inspected item by item in accordance with all the items listed in 5.3.If there are disqualified items in the inspection results, then, double sampling shall be taken from the original batch, and the disqualified items shall be re- inspected. If all the inspection results are qualified, then, the batch shall be judged as a qualified batch. If one or more of the inspection results are disqualified, then, the batch shall be judged as a disqualified batch. 8 Marking, Packaging, Transportation and Storage 8.1 Marking Each roll of the products shall be accompanied by a certificate of conformity and have the following markings. a) Manufacturer’s name and address; b) Product name; c) Product category; d) Product thickness, width and length; e) Production date or production batch No.; f) Serial No. of this document; g) Inspector code; h) Net mass. 8.2 Packaging The products shall use hard plastics, metal tube or paper tube as the roll core. The outside of the roll (including the end face) shall be packed with film, kraft paper or other packaging materials. 8.3 Transportation During transportation, the products shall be prevented from collision or contact with sharp objects, gently loaded and unloaded, and protected from sun, rain and stains, and the packaging shall be kept intact. 8.4 Storage The products shall be neatly placed in a clean, dry, ventilated and cool warehouse, and the packaging shall be kept intact. The products should not be horizontally placed in more than 6 layers, and should be vertically placed in a single layer, avoiding sunlight and heat sources. The product storage period is 18 months from the production date. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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