Abstract Sheets of glass are packaged, using in place of interleaving paper a dedusted agglomerated salicylic acid or a mixture of dedusted agglomerated salicylic acid and inert separator material, such as polystyrene beads. A novel method for agglomerating the acid is disclosed with the resulting salicylic acid agglomerated with polyethylene oxide and comprising substantially spherical particles less than about 30 mesh and having only a minor portion less than about 200 mesh. In accelerated staining tests agglomerated salicylic acid protects against staining slightly less than interleaving paper with its high application cost; agglomerated salicylic acid may be applied to sheets of glass with application costs on the order of those for applying wood flour or Lucite, which have extremely limited or negligible stain-retardant qualities, and this agglomerated material prevents surface scratching better than interleaving paper and nearly as well as an inert spherical separator.
The method of preparing the agglomerate material of Claim 8 wherein the inert separator is mixed with the agglomerated organic acid in an amount ranging from (a) about one part inert separator to four parts agglomerated organic acid to (b) about two parts inert separator to one part agglomerated organic acid.
Claim 2
Dependent Claim
135 words
An agglomerate material suitable for packaging glass sheets to protect them from staining and scratching, comprising an organic acid selected from the group consisting of benzoic acid, salicylic acid, toluic acid, adipic acid and mixtures thereof agglomerated with a binder selected from the group consisting of polyethylene oxide, polyethylene glycol, polyvinyl pyrrolidone-vinyl acetate copolymer and mixtures thereof to form substantially rounded particles ranging from about U. S. Number 30 mesh to about U. S. Number 200 mesh, said organic acid being admixed in a ratio of from about one to four to about two to one with an inert separator material selected from the group consisting of wood flour, polyethylene, polystyrene, polymethylmethacrylate, polytetrafluoroethylene and mixtures thereof having substantial rounded particles ranging from about U. S. Number 60 mesh to about U. S. Number 200 mesh.
Claim 3
Dependent Claim
30 words
The method of preparing an agglomerate according to claim 1 wherein the inert separator is selected from the group consisting of wood flour, polyethylene, polystyrene, polymethylmethacrylate, polytetrafluoroethylene and mixtures thereof.