Shock absorber and package with shock absorbers

Details Shock absorber and package with shock absorbers Shock absorber and package with shock absorbers

1997-03-26

1999-06-15

Robinson, Ellis

Stock material or miscellaneous articles

Hollow or container type article

Paper containing

428 342, 428 354, 383 3, 206522, 206814, B27N 2200, B65D 3000, B65D 8102, B29D 2200

Patent

active

059120584

ABSTRACT:
Sheets of laminated paper are stacked and made into air-tight flat bags with air inlets. After air is supplied into the bags, the air inlets are air-tightly closed to form shock absorbers 50 encapsulating the air. The laminated paper is made by stacking on a paper base a water-soluble polyvinyl alcoholic layer, having a saponification of 80 to 90 mol % and a degree of polymerization of 500 to 2500, to a total thickness of 90 .mu.m or less and a gas permeability of 800 thousand seconds per 100 ml or more. The air is introduced into flat bags 51 to 50 to 80% of maximum inflation to ensure their shock absorbing function. A package 100 is made by putting an appropriate number of discrete shock absorbers 50, or a continuous series of shock absorbers 50, in gaps between a casing 10 and the package content 70. The shock absorbers 50 need not be spread all over the entire surface of the package, so long as they are sufficient to provide the needed contact area to ensure a maximum static load of 0.07 kgf/cm.sup.2 (around 20 kg in normal packages).

REFERENCES:
patent: 5679421 (1997-10-01), Brinton, Jr.

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