IS 2970 : 1987 Specification for Cotton Fabrics for Supply Dropping Parachutes

1 Scope

1.1 This standard prescribes the requirements for two types of cotton fabricsused in the fabrication of parachutes intended for supply dropping purposes.

1.2 Cotton fabric of Type 1 is generally used in the fabrication ofparachutes having a diameter of 18 m and is intended for heavy suppliesdropping. Cotton fabric of Type 2 is generally used in the fabrication ofparachutes having a diameter 8.5 m and is intended for light supplies dropping.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 171 :1985Specification for cotton and cotton regeneratedcellulosic fibre blended grey yarn

IS 293 :1980Code for seaworthy packaging of cotton yarn andcloth

IS 764 :1979Method for determination of colour fastness oftextile materials to washing, Test 3

IS 1347 :1972Inland packaging of cotton cloth and yarn

IS 1383 :1977Method for determining scouring loss in grey andfinished cotton textile materials

IS 1390 :1983Method for determination of pH value of aqueousextracts of textile materials

IS 1954 :1969Methods for determination of length and width offabrics

IS 1964 :1970Methods for determinant ion of weight per squaremetre and weight per linear metre of fabrics

IS 1969 :1985Methods for determination of breaking load andelongation of woven textile fabrics

IS 2454 :1985Method for determination of colour fastness oftextile materials to artificial light (xenonlamp)

IS 3456 :1966Method for determination of water soluble matterof textile materials

IS 3522 : Part 1 :1966 Methods for estimation of common preservativesused in textile industry, Part 1

IS 3522 : Part 2 :1970 Methods for estimation of common preservatives used in the textile industry, Part 2

IS 11056 :1984 Methodfor determination of air permeability offabrics

IS 11662 :1986Specification for preservative treatments oftextiles