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1. WO2004101278 - STRUCTURE EN CARTON AVEC COUCHE D'ARRET EN NYLON

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

THAT WHICH IS CLAIMED IS:
1. A laminate structure comprising:
a paperboard substrate having an inner surface and an outer surface;
a layer of a heat-sealable polymer coated on the outer surface of the paperboard substrate;
a semi-crystalline polyamide polymer layer coated on the inner surface of the paperboard substrate;
a first tie layer coated on an inner surface of the semi-crystalline polyamide polymer layer;
at least one layer of polyolefin polymer coated on an inner
surface of the first tie layer;
a second tie layer positioned on an inner surface of the at least one layer of polyolefin polymer;
a polar polymer scalping barrier layer selected from the group consisting of a semi-crystalline nylon, an amorphous nylon, a polyester, and combinations thereof on an inner surface of the second tie layer;
a third tie layer positioned on an inner surface of the polar
polymer scalping barrier layer; and,
a heat-sealable polymer layer coated on an inner surface of the third tie layer.
2. The laminate structure according to claim 1 wherein said semi- crystalline polyamide polymer layer further comprises a nylon selected from the group consisting of Nylon 4/6, Nylon 6/6, Nylon 6/12, Nylon
11 , Nylon 12, and combinations thereof.
3. The laminate structure according to claim 1 wherein the polar polymer scalping barrier layer is a high melting point semi-crystalline polyamide.
4. The laminate structure according to claim 2 wherein said polar polymer scalping barrier layer comprises a high melting point semi- crystalline polyamide.

5. The laminate structure according to claim 1 wherein said semi- crystalline polyamide polymer layer and said polar polymer scalping barrier layer are Nylon 6.
6. The laminate structure according to claim 1 wherein said semi- crystalline polyamide polymer layer and said polar polymer scalping barrier layer is Nylon 6/6.
7. The laminate structure according to claim 1 wherein said at least one layer of polyolefin polymer on an inner surface of the first tie layer has a coating weight of about 12 to about 24 lbs/3,000 sq. ft.
8. A laminate structure consisting essentially of:
a paperboard substrate having an inner surface and an outer surface;
a layer of a heat-sealable polymer coated on the outer surface of the paperboard substrate;
a semi-crystalline polyamide polymer layer coated on the inner surface of the paperboard substrate;
a first tie layer coated on an inner surface of the semi-crystalline polyamide polymer layer;
at least one layer of polyolefin polymer coated on an inner
surface of the first tie layer;
a second tie layer positioned on an inner surface of the at least one layer of polyolefin polymer;
a polar polymer scalping barrier layer selected from the group consisting of a semi-crystalline nylon, an amorphous nylon, a polyester, and combinations thereof on an inner surface of the second tie layer;
a third tie layer positioned on an inner surface of the polar
polymer scalping barrier layer; and,
a heat-sealable polymer layer coated on an inner surface of the third tie layer.
9. The laminate structure according to claim 8 wherein said heat sealable polymer layer further contains an effective amount of a
calcium carbonate additive, thereby reducing the amount of D- limonene and essential oils which migrate into the heat sealable
polymer layer.
10. The laminate structure according to claim 8 wherein at least one of said first tie layer, said second tie layer, and said third tie layer further comprise a calcium carbonate additive to reduce the water vapor transmission rates through said laminate structure.
11. The laminate according to claim 8 wherein at least one of said semi-crystalline polyamide polymer layer and said polar polymer
scalping barrier layer further contains an effective amount of a calcium carbonate additive.