Reusable core for paper rolls

Details Reusable core for paper rolls Reusable core for paper rolls

1991-04-19

1992-12-01

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Paper containing

428 367, 428 3691, 428192, 428485, 428486, 428490, 428491, 428507, 428511, 428906, 138144, F16L 916

Patent

active

051679949

ABSTRACT:
A multiple ply tubular core having continuous vapor barrier layers near the inner and outer surfaces of the tube. The vapor barrier layers have overlying and underlying layers comprising fibrous cellulosic material. The tube is stable to dimensional changes caused by absorption or loss of moisture to the atmosphere.

REFERENCES:
patent: 2755821 (1956-07-01), Stahl
patent: 3451433 (1969-06-01), Cunningham
patent: 3548883 (1970-12-01), Cohen
patent: 3587656 (1971-06-01), Cunningham
patent: 3783908 (1974-01-01), Stump
patent: 3980107 (1976-09-01), Barnes
patent: 4965105 (1990-10-01), Ruggeberg

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