Biopolymer roll stock for form-fill-sealed article
AssigneeSonoco Development, Inc.
InventorsPaul Georgelos, Pat Montefusco, Jeanne M. Skaggs, Bohdan Wyslotsky
Life of this patent
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Abstract
A system and method for forming a biopolymer roll stock for a biopolymer form-fill-sealed package, the biopolymer roll stock includes at least one biopolymer resin; and at least one additive, the additive including at least one impact modifier between 5-50 weight % of the total weight of the additive; and at least one polymer color concentrate between 5-50 weight % of the total weight of the additive, whereby the biopolymer roll stock has a predetermined thickness and impact resistance.
Claims14
A biopolymer roll stock, the biopolymer roll stock comprising:
- a biopolymer resin present in an amount between 80 and 90 wt % of the total weight of the biopolymer roll stock, the biopolymer resin comprising polylactic acid;
- and
- an additive, the additive comprising:
- an ethylene acrylate copolymer impact modifier present in an amount between 5 and 10 wt % of the total weight of the biopolymer roll stock;
- and
- a polymer color concentrate present in an amount between 5 and 10 wt % of the total weight of the biopolymer roll stock,
- wherein the polymer color concentrate comprises an aliphatic-aromatic polyester polymer comprising adipic acid, terephthalic acid, and 1,4-butanediol monomers.
A biopolymer roll stock, the biopolymer roll stock comprising:
- a biopolymer resin present in an amount between 75 and 92 wt % of the total weight of the biopolymer roll stock, the biopolymer resin comprising polylactic acid;
- and
- an additive present in an amount between 8 and 25 wt % of the total weight of the biopolymer roll stock, the additive comprising:
- an ethylene acrylate copolymer impact modifier present in an amount between 50 and 67 wt % of the total weight of the additive;
- and
- a pigment/dye compounded in a carrier resin, the pigment/dye and carrier resin present in a total amount between 33 and 50 wt % of the total weight of the additive;
- wherein the carrier resin comprises an aliphatic-aromatic polyester polymer comprising adipic acid, terephthalic acid, and 1,4-butanediol monomers.
Dependencies are inferred from the claim text.