paunang salita
ISO (International Organization para sa Standardisasyon) ay isang pandaigdigang alyansa ng mga pambansang pamantayan katawan (Mga katawan ng miyembro ng ISO). Ang pagbuo ng mga internasyonal na pamantayan ay karaniwang isinasagawa sa pamamagitan ng ISO teknikal na komite. Ang bawat institusyon ng miyembro na interesado sa isang paksa kung saan itinatag ang isang teknikal na komite ay may karapatang kumatawan sa komiteng iyon. Ang mga internasyonal na organisasyon ng pamahalaan at di pamahalaan na nakikipag ugnayan sa ISO ay kasangkot din sa gawaing ito. ISO ay gumagana nang malapit sa International Electrotechnical Commission (IEC) sa lahat ng bagay ng electrotechnical standardization.

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Mangyaring tandaan na ang ilang mga nilalaman ng dokumentong ito ay maaaring sumailalim sa mga karapatan sa patent. Ang ISO ay hindi mananagot para sa pagtukoy ng anuman o lahat ng naturang patente. Ang mga detalye ng anumang mga karapatan sa patent na natukoy sa panahon ng paghahanda ng dokumento ay magiging sa pagpapakilala at / o listahan ng mga claim ng patent na natanggap ng ISO (tingnan iso.org/patents).

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ISO 12625-3, prepared by the Technical Committee CEN/TC 172 (Pulp, papel at pisara) of the European Committee for Standardisation (CEN) in cooperation with the Technical Committee ISO/TC 6 (papel na papel, board at pulp) and Subcommittee SC 2 (Mga pamamaraan ng pagsubok at mga pagtutukoy ng kalidad para sa papel at board), Comply with the technical cooperation agreement between ISO and CEN (Kasunduan sa Vienna).

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

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

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

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

c) Prepare specimens with more accurate descriptions and reformulate 7.1 at 7.4;

d) Edit and update.

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

— Bahagi 1: General guidance on articles;

— Bahagi 3: Pagpapasiya ng kapal, expansion thickness, apparent bulk density and volume

— Bahagi 4: Pagpapasiya ng lakas ng paghila, makunat sa break at makunat enerhiya pagsipsip;

— Bahagi 5: Pagpapasiya ng wet lakas ng makunat;

— Bahagi 6: Pagpapasiya ng gramo ng timbang;

— Bahagi 7: Pagpapasiya ng mga optical properties — Pagsukat ng luminance at chroma (outdoor daylight) using D65/10°;

— Bahagi 8: Oras at kapasidad ng pagsipsip ng tubig; Basket soaking test method;

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

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

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

— Bahagi 15 Pagpapasiya ng mga optical properties — Measurement of luminance and chroma using a C/2° (indoor daylight) light source;

— Bahagi 16 Pagpapasiya ng mga optical properties — Opacity (paper backing) — diffuse reflection method

ISO 12625-3-2014 Tissue paper and tissue products – Bahagi 3: Pagpapasiya ng kapal, expansion thickness and apparent bulk density and volume

ipakilala ang
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). Gayunpaman, 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. Ang bahaging ito ng ISO 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.

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

1 saklaw
Ang bahaging ito ng ISO 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 kPa.

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. ISO 534 covers the corresponding test methods for paper and board.

2 Mga reperensyang normatibo
All or part of the following documents are referred to normatively in this document and are not available for their use. Para sa mga petsang sanggunian, angkop ang mga bersyon na may pagbanggit lamang. Para sa mga walang petsang sanggunian, ang bagong bersyon ng sanggunian (kasama ang anumang mga rebisyon) angkop.

ISO 186, Papel at pisara — Sampling to determine average quality

ISO 187, Papel, board at pulp — Standard atmospheres para sa conditioning at pagsubok at pamamaraan para sa pagsubaybay sa sample atmospheres at conditioning

ISO 12625-1, tissue and household paper products – Bahagi 1: General guidance on terminology

ISO 12625-6, Tissue paper and tissue products – Bahagi 6: Pagpapasiya ng gramo ng timbang

ISO 12625-3-2014 Tissue paper and tissue products – Bahagi 3: Pagpapasiya ng kapal, expansion thickness and apparent bulk density and volume

3 Mga Tuntunin at Kahulugan
Para sa mga layunin ng dokumentong ito, 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

Tala 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

Tala 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

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

3.5 Bulk

Apparent specific volume

Reciprocal density

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

3.6g

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

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

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