Multi-layer structural body

Details Multi-layer structural body Multi-layer structural body

1995-06-23

1998-10-13

Nold, Charles

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428515, 428516, 428 354, 428518, 4284752, 4284744, 4284763, 428483, B32B 2718, B65D 8126

Patent

active

058209565

ABSTRACT:
A multi-layer structural body for absorbing oxygen and preserving packaged goods adversely affected by oxygen, such as food, includes a first layer resistant to gas permeation; a second layer laminated on the first layer and having a deoxidizing property; and a third layer laminated on the second layer and permeable to air, wherein the first layer has an oxygen permeability of less than 100 cc/m.sup.2 .multidot.day.multidot.atm (23.degree. C., 100% RH); the second layer includes a resin having an oxygen permeability coefficient of at least 200 cc.multidot.0.1 mm/m.sup.2 .multidot.day.multidot.atm (23.degree. C., 100% RH), a granular oxygen absorber composition dispersed in the resin and including a deoxidation material undergoing a deoxidation reaction when exposed to moisture, and a moisture absorber dispersed in the resin, wherein the third layer has an oxygen permeability of at least 100 cc/m.sup.2 .multidot.day.multidot.atm (23.degree. C., 100% RH)

REFERENCES:
patent: 4536409 (1985-08-01), Farrell et al.
patent: 4877664 (1989-10-01), Maeda et al.
patent: 4897274 (1990-01-01), Candida et al.
patent: 5527570 (1996-06-01), Addeo et al.

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