предговор
ИСО (Међународна организација за стандардизацију) је глобални савез националних тела за стандардизацију (Тела чланица ИСО). Развој међународних стандарда се обично спроводи преко ИСО техничких комитета. Свака институција чланица заинтересована за предмет за који је основан технички комитет има право да буде заступљена у тој комисији. Међународне владине и невладине организације које су у вези са ИСО такође су укључене у овај посао. ИСО блиско сарађује са Међународном електротехничком комисијом (ИЕЦ) о свим питањима електротехничке стандардизације.

Процедуре које се користе за израду овог документа и оне које се користе за даље одржавање описане су у Делу 1 ИСО/ИЕЦ директиве. Нарочито, обратите пажњу на различите стандарде одобрења који су потребни за различите типове ИСО докумената. Овај документ је израђен у складу са правилима уређивања у Дел 2 ИСО/ИЕЦ директиве (види исо.орг/дирецтивес).

Please note that certain contents of this document may be subject to patent rights. ИСО није одговоран за идентификацију било ког или свих таквих патената. Details of any patent rights identified during the preparation of the document will be in the introduction and/or list of patent claims received by ISO (see iso.org/patents).

Any trade names used in this document are information provided for the convenience of the user and do not constitute an endorsement.

For a description of the meaning of ISO specific terms and expressions related to conformity assessment, and for information on ISO compliance with WTO principles in Technical Barriers to Trade (ТБТ), please refer to the following URL: Foreword – Supplementary Information.

ИСО 12625-3, prepared by the Technical Committee CEN/TC 172 (Pulp, папир и картон) of the European Committee for Standardisation (CEN) in cooperation with the Technical Committee ISO/TC 6 (папир, board and pulp) and Subcommittee SC 2 (Test methods and quality specifications for paper and board), Comply with the technical cooperation agreement between ISO and CEN (Vienna Agreement).

This second. Version cancels and replaces the technically revised first version (ИСО 12625-3:2005).

For ISO 12625-3:2005, the following minor changes have been made:

а) The title has been changed; Add “bulk”;

б) The accuracy data in Annex A has been adjusted according to existing equipment capabilities and calibration procedures;

ц) Prepare specimens with more accurate descriptions and reformulate 7.1 и 7.4;

d) Edit and update.

ИСО 12625 consists of the following parts under the general heading Tissue Paper and household paper products

— Парт 1: General guidance on articles;

— Парт 3: Determination of thickness, expansion thickness, apparent bulk density and volume

— Парт 4: Determination of tensile strength, tensile at break and tensile energy absorption;

— Парт 5: Determination of wet tensile strength;

— Парт 6: Determination of gram weight;

— Парт 7: Determination of optical properties — Measurement of luminance and chroma (outdoor daylight) using D65/10°;

— Парт 8: Water absorption time and capacity; Basket soaking test method;

— Парт 9: Determination of blasting strength of the ball;

— Парт 11: Determination of wet-bulb bursting strength;

— Парт 12: Determination of tensile strength of perforated lines — calculation of perforating efficiency;

— Парт 15 Determination of optical properties — Measurement of luminance and chroma using a C/2° (indoor daylight) light source;

— Парт 16 Determination of optical properties — Opacity (paper backing) — diffuse reflection method

ИСО 12625-3-2014 Tissue paper and tissue products – Парт 3: Determination of thickness, expansion thickness and apparent bulk density and volume

увести
Thickness is an important characteristic of household paper and household paper products.

In the household paper industry, thickness-related parameters are often measured, such as the diameter of rolls for rolled products (kitchen towels) or stack height for folded products (paper towels). Међутим, not only end-use household paper products, but also the basic household paper from which these products are produced are also the subject of trade between companies and countries, which means that there is a real need for consistent thickness measurements that can be applied to household paper products at any stage of their manufacture.

It is well known that the thickness of tissue paper and tissue products depends on the pressure applied to the material at the time of measurement. The household paper industry has used several different loading pressures, pressure foot diameters, and loading speeds. Овај део ИСО-а 12625 was developed by harmonizing the standards applicable to tissues and tissue products currently in use. It specifies a single loading pressure, foot diameter and loading speed for all thickness measurements of tissue and tissue products.

It is clearly stated that tissue paper and tissue products should be tested for impurities and dents in accordance with ISO 15755.

ИСО 287 or ISO 638 should be used to determine moisture content in tissue and household paper products.

1 домет
Овај део ИСО-а 12625 specifies a test method for determining thickness and expansion thickness, as well as calculating the apparent bulk density and volume of tissue and household paper and tissue paper products at a pressure of 2,0 кПа.

Note that this part of ISO 12625 is intended to provide a consistent test method for determining the thickness and density of tissue paper and tissue products. ИСО 534 covers the corresponding test methods for paper and board.

2 Normative references
All or part of the following documents are referred to normatively in this document and are not available for their use. За датиране референце, citation-only versions apply. For undated references, the new version of the reference (укључујући све ревизије) примењује.

ИСО 186, Папир и картон — Sampling to determine average quality

ИСО 187, Папир, board and pulp — Standard atmospheres for conditioning and testing and procedures for monitoring sample atmospheres and conditioning

ИСО 12625-1, tissue and household paper products – Парт 1: General guidance on terminology

ИСО 12625-6, Tissue paper and tissue products – Парт 6: Determination of gram weight

ИСО 12625-3-2014 Tissue paper and tissue products – Парт 3: Determination of thickness, expansion thickness and apparent bulk density and volume

3 Terms and Definitions
For the purposes of this document, the terms and definitions set forth in ISO 12625-1 and below apply.

3.1 Thickness of single layer

The distance between the two main surfaces of a single layer of tissue paper measured under static load applied as specified in this part of ISO 12625

Белешка 1: A tissue “layer” is an unlaminated tissue, like tissue made directly from a toilet paper mechanism.

3.2 Sheet thickness

The distance between the two main surfaces of a single paper towel product measured under the applied static load specified in this part of ISO 12625

Белешка 1: Tissue “sheets” are laminated or unlaminated tissue, as present in finished paper towel products.

3.3 Expansion thickness

The thickness of a single sheet of tissue paper or tissue product, calculated from the thickness of several sheets of superimposed paper, is measured under the applied static load specified in this part of ISO 12625

3.4 Apparent packing density

The quality of tissue paper or tissue product per unit volume, calculated according to its gram weight and expanded thickness

Белешка 1: Apparent packing density is expressed in grams per cubic centimeter.

3.5 Bulk

Apparent specific volume

Reciprocal density

Белешка 1: Volume is expressed in cubic centimeters per gram.

3.6г

The mass per unit area of tissue paper or tissue paper products as determined by the procedure in ISO 12625-6

Белешка 1 Entry: The gram weight of the entry is expressed in grams per square meter (g/m 2).

Јаван је само одељак са стандардним информацијама. Да бисте видели цео садржај, морате купити стандард преко званичних канала.