| 摘要 |
#CMT# #/CMT# Cold-ductile laminate (10) for production of blisters, packaging of moisture-, oxygen- and acid sensitive products, comprises a barrier layer (16) that acts as a barrier against water vapor and gases; a plastic film (12) arranged on a first side of the barrier layer, which acts as the external layer and a sealing interior layer (20-22) arranged on a second side of the barrier layer, which contains a moisture-, oxygen- and acid absorbing absorber substance (24). #CMT# : #/CMT# Independent claims are included for: (1) a covering foil obtained from the cold-ductile laminate; and (2) blisters for packing moisture-, oxygen- and acid sensitive products from the cold-ductile laminate. #CMT#USE : #/CMT# The cold-ductile laminate is useful for production of blisters and packaging of moisture-, oxygen- and acid sensitive products. The blister is useful for packing pharmaceutical products, e.g. damp-sensitive tablets and powders (claimed). #CMT#ADVANTAGE : #/CMT# The cold-ductile laminate exhibits high protective effect against moisture, oxygen and acid. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The diagram shows the cold-ductile laminate: 10 : Cold-ductile laminate; 12 : Plastic film; 14 : Adhesive layer; 16 : Barrier layer; 20-22 : Sealing interior layer; 24 : Moisture-, oxygen- and acid absorbing absorber substance. #CMT#POLYMERS : #/CMT# Preferred Components: The interior layer is a one or more layer and contains a polyolefin with at least an alkali oxide- and alkaline earth metal oxide as absorber substance. The polyolefin contains calcium oxide (0.5-50, preferably 10-30 wt.%). The polyolefin is a polyethylene, preferably a high density polyethylene, a linear low density polyethylene, a low-density polyethylene, polypropylene and/or acid-modified polyolefins components, e.g. ionomer, coupling agent and polypropylene-maleic acid anhydride. The barrier layer is an aluminum foil and contains a layer of non-absorber substance. The barrier layer is coated on the reverse side turned of the polyolefin with an adhesion mediator, preferably with water or solvent based primer or with polymer adhesion mediator. The external layer is a plastic film connected with the aluminum foil over an adhesive layer (14) from oriented- polyamide, -polypropylene or -polyester. The covering foil comprises seal capable interior layers comprising a seal medium as a varnish, preferably a heat sealing varnish, a foil or a sealable coating, which seals the covering foil in the inner side of the blister or the interior layer of the laminate, where the sealing is a solid sealing or a sealing with smaller adhesive power. |
