Back to results
US 4,334,615 AGranted
Package for compounding rubber and compounded rubber
AssigneeThe Goodyear Tire & Rubber Company
InventorsKim D. Butler, Ray A. Young, Alfred L. Brown
Life of this patent
Estimating the term…
Abstract
A package comprised of (A) an article selected from unvulcanized rubber or compounding ingredients therefor and (B) a protective film of a thermoplastic ethylene/vinyl acetate copolymer containing anti-block agent and having a vinyl acetate content in the range of 11 to 22 percent. The invention further relates to a compounded rubber comprised of a mixture of unsaturated rubber and a package of compounding ingredients contained in the ethylene/vinyl acetate copolymer film.
Claims2
A bag of ethylene/vinyl acetate film having an opening at its top which can be heat sealed;
- where said film has a thickness in the range of about 0.5 to about 10 mils and is comprised of a thermoplastic ethylene/vinyl acetate copolymer containing an anti-block agent and having a vinyl acetate content in the range of about 11 to about 22 percent and further characterized, when having a thickness of about 2 to 4 mils, by a melting point in the range of about 85.degree. C. to about 95.degree. C., a minimum ultimate tensile strength at 25.degree. C. of about 1850 psi, an oil solubility melt index of about 63.degree. C. to about 75.degree. C. and a minimum 300 percent modulus at 25.degree. C. of about 700 psi.
Dependencies are inferred from the claim text.