Claims
- 1. A container comprising a sidewall portion and a bottom portion, said sidewall portion extending upwardly from said bottom portion to an upper end thereof providing an open mouth rim of the container, said sidewall being formed from a laminated structure comprising: (1) a substrate of a high polymeric material, (2) a substrate of a porous hydrophilic cellulosic material, and (3) a layer bonding said substrates comprising particles of a polymer of the same kind as said high polymeric material substrate (1) but of an average molecular weight of from about 4 to about 100 per cent of said high polymeric material substrate bonded to the surface of said substrate (1) and a predominant amount of a water-dispersible adhesive preferentially adherent to said cellulosic substrate surrounding said bonded particles so as to mechanically interlock with said particles.
- 2. A container as defined in claim 1 wherein said polymeric substrate (1) is polystyrene, said porous hydrophilic cellulosic material is paper, said adhesive polymer is polystyrene, and said water-dispersible adhesive is a copolymer of ethylene and vinyl acetate.
- 3. A container as defined in claim 2 wherein said polystyrene adhesive has an average molecular weight of from about 5 to 15 percent of the average molecular weight of the polystyrene substrate and said water-dispersible adhesive is an acetoxylated ethylene-vinyl acetate copolymer.
- 4. A container as defined in claim 1 wherein said polymeric substrate is a styrene, acrylic or methacrylic polymer, and said porous hydrophilic cellulosic substrate is paper, rayon or paperboard.
Parent Case Info
This is a continuation of application Ser. No. 275,951 filed July 28, 1972, now abandoned.
US Referenced Citations (3)
Continuations (1)
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Number |
Date |
Country |
Parent |
275951 |
Jul 1972 |
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