NBN EN 14932 : 2007

1 Scope
2 Normative references
3 Terms and definitions
4 Materials
5 Solar reflectance
6 Durability
7 Airtightness and oxygen permeability on bale
8 Requirements
   8.1 General requirements
   8.2 Requirement for appearance
9 Test methods
   9.1 Determination of thickness
   9.2 Determination of width
   9.3 Determination of core protrusion
   9.4 Determination of length of film
   9.5 Determination of neck-in
   9.6 Determination of tensile characteristics
   9.7 Determination of impact resistance
   9.8 Determination of slow perforation characteristics
   9.9 Determination of the tightening force of films
   9.10 Determination of tear resistance characteristics
   9.11 Determination of adhesion
   9.12 Determination of total light transmission
   9.13 Determination of resistance to artificial weathering
        9.13.1 Principle
        9.13.2 Apparatus
        9.13.3 Test conditions
        9.13.4 Sampling
        9.13.5 Test procedure
        9.13.6 Results
   9.14 Determination of oxygen permeability
10 Determination of leaktightness on the bale
11 Designation
12 Marking
Annex A (normative) Determination of solar reflectance
      A.1 Introduction
      A.2 Principle
      A.3 Terms and definitions
      A.4 Determination of solar reflectance, R[s]
          A.4.1 Reflectance spectra acquisition
          A.4.2 Calculation of R[s]
Annex B (normative) Determination of neck-in characteristic
      B.1 Introduction
      B.2 Apparatus
      B.3 Procedure
Annex C (normative) Determination of perforation resistance
      C.1 Principle
      C.2 Description
      C.3 Apparatus
      C.4 Procedure
          C.4.1 Definitions
          C.4.2 Conditioning
          C.4.3 Specimen preparation
          C.4.4 Test conditions
          C.4.5 Test procedure
          C.4.6 Number of tests
      C.5 Results
Annex D (normative) Determination of tightening force
      D.1 Principle
      D.2 Apparatus
      D.3 Procedure
      D.4 Preparation of the specimens
      D.5 Results
      D.6 Repeatability
Annex E (normative) Determination of adhesion characteristic
      E.1 Principle
      E.2 Apparatus
      E.3 Preparation of apparatus
      E.4 Procedure
Annex F (informative) Determination of leaktightness on the
        bale
      F.1 Airtightness on an artificial bale
      F.2 Oxygen permeability on an artificial bale

Defines the requirements for dimensional, mechanical and optical characteristics of stretch thermoplastic films for wrapping round bales used for outdoor ensiling of forage.