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GB/T 24328.2-2020 English PDF

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GB/T 24328.2-2020: Tissue paper and tissue products - Part 2: Determination of thickness, bulking thickness and apparent bulk density and bulk
Status: Valid

GB/T 24328.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 24328.2-2020English259 Add to Cart 3 days [Need to translate] Tissue paper and tissue products - Part 2: Determination of thickness, bulking thickness and apparent bulk density and bulk Valid GB/T 24328.2-2020
GB/T 24328.2-2009English359 Add to Cart 3 days [Need to translate] Tissue paper and tissue products -- Part 2: Determination of thickness, bulking thickness and apparent bulk density Obsolete GB/T 24328.2-2009

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Basic data

Standard ID GB/T 24328.2-2020 (GB/T24328.2-2020)
Description (Translated English) Tissue paper and tissue products - Part 2: Determination of thickness, bulking thickness and apparent bulk density and bulk
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y30
Classification of International Standard 85.010
Word Count Estimation 14,118
Date of Issue 2020-07-21
Date of Implementation 2021-02-01
Older Standard (superseded by this standard) GB/T 24328.2-2009
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 24328.2-2020: Tissue paper and tissue products - Part 2: Determination of thickness, bulking thickness and apparent bulk density and bulk


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Tissue paper and tissue products--Part 2.Determination of thickness, bulking thickness and apparent bulk density and bulk ICS 85.010 Y30 National Standards of People's Republic of China Replace GB/T 24328.2-2009 Toilet paper and its products Part 2.thickness, layer thickness, Determination of apparent layer compactness and bulk (ISO 12625-3.2014,Tissuepaperandtissueproducts- Released on 2020-07-21 Implemented on 2021-02-01 State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

GB/T 24328 "Toilet Paper and Its Products" is divided into the following 12 parts. ---Part 1.Terminology guidelines; ---Part 2.Determination of thickness, laminate thickness, apparent laminate tightness and bulk; ---Part 3.Determination of tensile strength, elongation at maximum force and tensile energy absorption; ---Part 4.Determination of wet tensile strength; ---Part 5.Quantitative determination; ---Part 6.Determination of water absorption time and water absorption capacity basket immersion method; ---Part 7.Determination of the burst resistance of the spherical shape; ---Part 8.Determination of optical properties, determination of brightness and color D65/10° (outdoor daylight conditions); ---Part 9.Determination of the burst resistance of the wet spherical shape; ---Part 10.Determination of the tensile strength of the punching line and calculation of the punching efficiency; ---Part 11.Determination of optical properties, determination of brightness and color C/2° (indoor daylight conditions); --- Part 12.Determination of optical properties. Determination of opacity. Diffuse reflectance method. This part is Part 2 of GB/T 24328. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 24328.2-2009 "Toilet paper and its products Part 2.Measurement of thickness, laminate thickness and apparent density Compared with GB/T 24328.2-2009, the main technical changes in this part are as follows. ---The definition of bulk and quantitative has been added (see Chapter 3); ---Modified the flatness of the thickness gauge, from "0.001mm" to "0.003mm" (see 5.1, Chapter 5 of the.2009 edition); ---Modified sample collection and processing, and adjusted "Sample Temperature and Humidity Processing" to a separate chapter (see Chapter 6,.2009 Edition 6.1); ---Modified the description of the sample sampling size (see Chapter 7, Chapter 6 of the.2009 edition); ---Modified the sampling requirements for single layer thickness (see Chapter 7, Chapter 6 of the.2009 edition); --- Modify the position of the thickness standard deviation result, from "reserve two significant digits" to "reserve three significant digits" (see section Chapter 9, Chapter 8 of the.2009 edition); ---Modified the expression of the unit of lamination thickness tb in "apparent lamination tightness", from "micron" to "mm" (see Chapter 9,.2009 edition Chapter 8); ---Added the calculation method of "bulk thickness" (see Chapter 9); ---Adjust "Precision" to an informative appendix (see Appendix A, Chapter 10 of the.2009 edition); --- Modified "Working surface parallelism error" from "0.0004mm" to "0.006mm" (see B.3,.2009 edition of A.3). This part uses the redrafting law to amend and adopt ISO 12625-3.2014 ``Toilet paper and its products Part 3.Thickness, laminate thickness, Determination of apparent compactness and bulkiness of laminates. The technical differences between this part and ISO 12625-3.2014 and the reasons are as follows. ---Deleted the content of the note in the scope to meet the technical conditions of our country. ---Regarding normative reference documents, this section has made adjustments with technical differences to adapt to my country's technical conditions and adjustments. The situation is collectively reflected in Chapter 2 "Normative Reference Documents", and the specific adjustments are as follows. ● Replace ISO 186 with GB/T 450 which is modified to adopt international standards; ● Replace ISO 187 with GB/T 10739, which is equivalent to the international standard; ● Replace ISO 12625-1 with GB/T 24328.1 which is modified to adopt international standards; ● Replace ISO 12625-6 with GB/T 24328.5 which is modified to adopt international standards. This section has made the following editorial changes. ---In order to be consistent with the existing standard series, the standard name is revised to "Toilet paper and its products Part 2.Thickness, laminated thickness, Determination of apparent compactness and bulkiness of laminates. Please note that certain contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents. This part was proposed by the China National Light Industry Council. This part is under the jurisdiction of the National Paper Industry Standardization Technical Committee (SAC/TC141). Drafting organizations of this section. Shandong Huatai Paper Co., Ltd., China Pulp and Paper Research Institute Co., Ltd., China Light (Jinjiang) Sanitary Product Research Co., Ltd. The main drafters of this section. Lu Xia, Zuo Jianbo, Zhang Fengshan, Li Liangjun, Liu Yanshao. The previous releases of the standards replaced by this part are. ---GB/T 24328.2-2009. Toilet paper and its products Part 2.thickness, layer thickness, Determination of apparent layer compactness and bulk

1 Scope

This part of GB/T 24328 specifies the measurement of the thickness and layer thickness of toilet paper and its products under the condition of 2.0kPa measurement pressure Method, as well as the calculation method of apparent compactness and bulk. This section applies to toilet paper and its products.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. The collection of GB/T 450 paper and paperboard samples and the determination of the longitudinal and transverse directions, front and back sides of the samples (GB/T 450-2008, ISO 186. 2002, MOD) GB/T 10739 Standard atmospheric conditions for handling and testing of paper, paperboard and pulp samples (GB/T 10739-2002, eqvISO 187. 1990) GB/T 24328.1 Toilet paper and its products Part 1.Terminology guidelines (GB/T 24328.1-2020, ISO 12625-1. 2019, MOD) GB/T 24328.5 Toilet paper and its products Part 5.Quantitative determination (GB/T 24328.5-2009, ISO 12625-6. 2005, MOD)

3 Terms and definitions

The following terms and definitions defined in GB/T 24328.1 apply to this document. 3.1 Single-plythickness The measured distance between the two surfaces of a single-layer toilet paper under a specified static pressure. Note. Single "layer" refers to toilet paper that cannot be layered, such as a single-layer toilet paper produced directly by a toilet paper machine. 3.2 Singlesheetthickness Under a specified static pressure, the measured distance between the two surfaces of a single (single finished layer) toilet paper product. Note. A single "sheet" is a finished product processed by a single or multiple layers of toilet paper, such as a toilet paper product that has been processed. 3.3 Bulkingthickness The thickness of a single sheet (single finished layer) of toilet paper and its products is determined by a stack of multiple sheets (multiple finished layers) measured under a specified static pressure. Calculated by adding thickness.

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