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BS 5421-2:1978

Current
Current

The latest, up-to-date edition.

Methods of test for elastomeric threads Polyurethane thread (elastane yarn)
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-08-1978

Foreword
Cooperating organizations
Methods
1 Scope
2 References
3 Method 1: preparation of test specimens
4 Method 2: determination of mass per unit length
4.1 Introduction
4.2 Definition
4.3 Sampling
4.4 Apparatus
4.5 Procedure
4.6 Weighing of test specimens
4.7 Calculation
4.8 Test report
5 Method 3: determination of breaking load, tenacity
      and elongation at break
5.1 Principle
5.2 Definitions
5.3 Apparatus
5.4 Sampling
5.5 Procedure
5.6 Calculation
5.7 Test report
6 Method 4: determination of load at predetermined
      elongation
6.1 Principle
6.2 Definition
6.3 Apparatus
6.4 Sampling
6.5 Procedure
6.6 Calculation
6.7 Test report
7 Method 5: determination of stress decay
7.1 Principle
7.2 Definition
7.3 Apparatus
7.4 Sampling
7.5 Procedure
7.6 Calculation
7.7 Test report
8 Method 6: determination of set
8.1 Definition
8.2 Apparatus
8.3 Sampling
8.4 Procedure
8.5 Calculation
8.6 Test report
9 Method 7: resistance to copper staining during
      laundering
9.1 Introduction
9.2 Principle
9.3 Reagents
9.4 Apparatus and materials
9.5 Test pieces
9.6 Preparation of test specimens
9.7 Procedure
9.8 Test report
10 Method 8: resistance to atmospheric fume staining
10.1 Introduction
10.2 Principle
10.3 Reagents
10.4 Apparatus and materials
10.5 Test specimens
10.6 Procedure
10.7 Test report
Figures
1 Method 2: apparatus for cutting test pieces
2 Method 3: recommended method of positioning,
      tensioning, and clamping a polyurethane thread in
      the tensile testing machine
3 Method 8: suitable apparatus for determining
      resistance to atmospheric fume staining

Preparation of test specimens; mass per unit length; breaking load, tenacity and elongation at break; load at predetermined elongation; stress decay; set; resistance to copper staining; resistance to fume staining.

This Part of BS 5421 describes eight methods of test for polyurethane thread (elastane yarn):

method 1 Preparation of test specimens;
method 2 Determination of mass per unit length;
method 3 Determination of breaking load, tenacity and elongation at break;
method 4 Determination of load at predetermined elongation;
method 5 Determination of stress decay;
method 6 Determination of set;
method 7 Resistance to copper staining during laundering;
method 8 Resistance to atmospheric fume staining.

Committee
TCI/100
DevelopmentNote
Supersedes 76/50177 DC. (08/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
DocumentType
Standard
Pages
18
PublisherName
British Standards Institution
Status
Current

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