ISO 11093-5:2016 PDF

Name: ISO 11093-5:2016 — Paper and board — Testing of cores — Part 5: Determination of characteristics of concentric rotation
SKU: ISO 11093-5:2016
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Paper and board — Testing of cores — Part 5: Determination of characteristics of concentric rotation

Название (английский):

ISO 11093-5:2016

Paper and board — Testing of cores — Part 5: Determination of characteristics of concentric rotation

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 4
Дата публикации:: 19 января 2016 г.
Издание:: ISO IS 11093 edition 3 version 1
ICS:: 85.060

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Описание (английский):

ISO 11093:2016 specifies a method for determining the characteristics of concentric rotation of cylindrical board cores which meet the following criteria: - minimum wall thickness: 5 mm; - minimum external diameter: 60 mm; - maximum sample length: 3 200 mm.

Abstract

Overview

Key topics and technical requirements

Scope limits: wall thickness ≥ 5 mm; external diameter ≥ 60 mm; sample length ≤ 3 200 mm (full core or extracted specimen 1 200–3 200 mm where applicable).
Measurement principles:
- Circularity (three-point method): measure between three points in a plane perpendicular to the core axis where two points are fixed and the third is the measurement point. Rotate the core 360° and record minimum and maximum dial-indicator readings; difference = circularity f_R (mm).
- Rectitude (five-point method): measure between five points in perpendicular planes where four points are fixed (two pairs) and the fifth is in the mid plane. Rotate core 360°, record min/max; rectitude f_S = (x/2) where x is the measured difference (mm). Convert to mm/m using f' = f_S × 1000 / S_l (S_l = distance between supports in mm).
Apparatus requirements:
- Two supports (pairs of free-rotating rollers) and a sliding frame with two measurement heads.
- Roller diameter (85 ± 1) mm, width (19 ± 1) mm (example: bearing 6209).
- Measurement feet: flat 10 mm diameter, load ≈ 1.2 N; dial indicators graduated 0.01 mm with accuracy at least 0.005 mm.
- Support geometry: tangents between roller supports form 120° ± 5°; support spacing equals core length minus (200 ± 10) mm.
Sampling & conditioning: sampling per ISO 11093-1; conditioning per ISO 11093-2.
Quality data: calculate mean and standard deviation of circularity and rectitude to 0.01 mm precision. Measurement fidelity is adequate for rectitude ≥ 0.3 mm/m.
Reporting: include ISO reference, core type, sampling/test dates and locations, specimen count and dimensions, test length, mean and SD for f_R and f_S, signature, and any deviations.

Applications and users

ISO 11093-5 is used for quality control, supplier acceptance, production process control and R&D for manufacturers and users of paperboard cores and mandrins. Typical users include:

Core and tube manufacturers
Converters and rewinders (winding paper, film, foil, nonwovens)
Independent test laboratories and QA departments
Product engineers validating core geometry and concentric rotation

Related standards

ISO 11093-1 - Sampling
ISO 11093-2 - Conditioning of samples for test
Other parts of ISO 11093 series (dimensions, moisture, bending, compression, modal analysis) provide complementary test methods for cores.

Keywords: ISO 11093-5, testing of cores, concentric rotation, circularity, rectitude, paper and board, mandrins, core testing, measurement apparatus.

Технические детали

Технический комитет: ISO/TC 6 - Paper, board and pulps
SKU: ISO 11093-5:2016

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Каталог

ISO 11093-1:1994

Действующий

Paper and board — Testing of cores — Part 1: Sampling

Overview ISO 11093-1:1994, "Paper and board - Testing of cores - Part 1: Sampling", specifies a standardised method for obtaining a representative sample of a lot of cores (spool cores, paperboard co…

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