NBN EN 344 : 1993

Cooperating organizations
National foreword
Foreword
1 Scope
2 Normative references
3 Definitions
4 Requirements
4.1 Sampling and conditioning
4.2 Design
4.2.1 Height of upper
4.2.2 Seat region
4.3 Whole footwear
4.3.1 Sole performance
4.3.2 Toe protection
4.3.3 Penetration resistance
4.3.4 Electrical resistance
4.3.5 Resistance to inimical environments
4.3.6 Energy absorption of seat region
4.3.7 Leakproofness
4.4 Upper
4.4.1 Thickness
4.4.2 Tear strength
4.4.3 Tensile properties
4.4.4 Flexing resistance
4.4.5 Water penetration and water absorption
4.4.6 Water varpour permeability and coefficient
4.4.7 pH value
4.4.8 Hydrolysis
4.5 Lining
4.5.1 Thickness
4.5.2 Tear thickness
4.5.3 Abrasion resistance
4.5.4 Water vapour permeability and coefficient
4.5.5 pH value
4.6 Tongue
4.6.1 Tear strength
4.6.2 pH value
4.7 Insole
4.7.1 Thickness
4.7.2 pH value
4.7.3 Water absorption and desorption
4.7.4 Abrasion resistance
4.8 Outsole
4.8.1 Cleated outsole
4.8.2 Thickness of non-cleated outsoles
4.8.3 Tear strength
4.8.4 Abrasion resistance
4.8.5 Flexing resistance
4.8.6 Hydrolysis
4.8.7 Interlayer bond strength
4.8.8 Resistance to hot contact
4.8.9 Resistance to fuel oil
5 Test methods
5.1 Determination of upper/outsole and sole
        interlayer bond strength
5.1.1 Principle
5.1.2 Apparatus
5.1.3 Preparation of test pieces
5.1.4 Measurement of bond strength
5.1.5 Calculation and expression of results
5.2 Determination of internal toecap length
5.2.1 Preparation of test piece
5.2.2 Determination of the test axis
5.2.3 Test procedure
5.3 Determination of impact resistance
5.3.1 Apparatus
5.3.2 Procedure
5.4 Determination of compression resistance
5.4.1 Apparatus
5.4.2 Procedure
5.5 Determination of corrosion resistance of metal
        toecaps or metal penetration resistant inserts
        in all-rubber footwear
5.5.1 Preparation of test piece
5.5.2 Test solution
5.5.3 Procedure
5.6 Determination of penetration resistance
5.6.1 Apparatus
5.6.2 Procedure
5.7 Determination of electrical resistance
5.7.1 Apparatus
5.7.2 Preparation and conditioning of test piece
5.7.3 Procedure
5.8 Determination of insulation against heat
5.8.1 Apparatus
5.8.2 Procedure
5.9 Determination of insulation against cold
5.9.1 Apparatus
5.9.2 Procedure
5.10 Determination of energy absorption of seat
        region
5.10.1 Apparatus
5.10.2 Procedure
5.11 Determination of leakproofness
5.11.1 Apparatus
5.11.2 Preparation of test piece
5.11.3 Procedure
5.12 Determination of water penetration and water
        absorption
5.12.1 Principle
5.12.2 Apparatus
5.12.3 Preparation of test piece
5.12.4 Procedure
5.12.5 Calculation and expression of results
5.13 Determination of water vapour permeability and
        water vapour coefficient
5.13.1 Determination of water vapour permeability
5.13.2 Determination of water vapour absorption
5.13.3 Determination of water vapour coefficient
5.14 Determination of abrasion resistance of lining
5.14.1 Principle
5.14.2 Apparatus
5.14.3 Atmosphere for conditioning and testing
5.14.4 Preparation of test pieces and materials
5.14.5 Procedure
5.14.6 Method of assessment
5.15 Determination of water absorption and desorption
        of insole
5.15.1 Preparation of test piece
5.15.2 Procedure
5.16 Determination of abrasion resistance of insole
5.16.1 Principle
5.16.2 Apparatus
5.16.3 Preparation of test piece
5.16.4 Preparation of abradant pads
5.16.5 Procedure
5.16.6 Method of assessment
5.17 Determination of flexing resistance of outsole
5.17.1 Apparatus
5.17.2 Preparation of test piece
5.17.3 Procedure
5.18 Determination of resistance to hot contact
5.18.1 Apparatus
5.18.2 Preparation of test specimen
5.18.3 Procedure
5.18.4 Method of assessment
5.19 Determination of resistance to fuel oil
5.19.1 General method
5.19.2 Method for outsole materials which shrink or
        become brittle
Annexes
A (informative) Recommended methods for the
        assessment of toecaps to be used in safety or
        protective footwear
B (informative) Recommended methods for the
        assessment of penetration resistant inserts
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references

Specifies requirements and, where appropriate, test methods to establish conformity with these requirements for footwear meant to protect the wearer's feet and legs against foreseeable hazards in many working sectors. Coverage includes definitions, design, leakproofness, tear strength, lining, abrasion resistance and sole performance.