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US 12,343,917 B2Granted
Closure for a product-retaining container
AssigneeVinventions USA, LLC
InventorsFloriane Marie Gabrielle Morel, Olav Marcus Aagaard, Marc Anton Charles Thometschek
Life of this patent
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Abstract
A closure for a product-retaining container is constructed for being inserted and securely retained in a portal-forming neck of said container. The closure comprises: a plastic material comprising at least one thermoplastic polymer; a plurality of particles comprising cork; and at least one processing aid. Optionally, one or more additives and/or blowing agents may be included. A method for manufacturing a closure comprises intimately combining multiple components, heating the resulting composition to form a melt, forming a closure precursor from the melt, and optionally cutting and/or finishing the closure precursor to form the closure.
Claims36
A closure for a beverage-retaining container constructed for being inserted and securely retained in a portal-forming neck of said container, the closure comprising:
- (a) a plastic material comprising at least one thermoplastic polymer, wherein the at least one thermoplastic polymer comprises at least one polymer that is biodegradable according to ASTM D6400, and the at least one thermoplastic polymer is selected from the group consisting of:
- polyhydroxyalkanoates;
- copolymers of hydroxyalkanoates and monomers of biodegradable polymers;
- polylactic acid;
- copolymers of lactic acid and monomers of biodegradable polymers;
- polycaprolactone;
- polyglycolide;
- poly(3-hydroxybutyrate);
- poly(3-hydroxybutyrate-co-3-hydroxyvalerate);
- poly(3-hydroxybutyrate-co-3-hydroxyhexanoate);
- poly(butylenesuccinate);
- poly(butylenesuccinate-co-adipate);
- poly(trimethyleneterephthalate);
- poly(butylenadipate-co-terephthalate);
- poly(butylenesuccinate-co-terephthalate);
- poly(butylenesebacate-co-terephthalate);
- lactic acid caprolactone lactic acid copolymers;
- lactic acid ethylene oxide lactic acid copolymers;
- and combinations of any two or more thereof;
- (b) a plurality of particles comprising cork and having a particle size distribution D50 measured by means of mechanical sieving according to ISO ICS 19.120 in a range of from 0.2 mm to 10 mm;
- and
- (c) two or more processing aids, comprising at least one processing aid that reduces the melt viscosity of the plastic material, and at least one processing aid that reduces the friction of the plastic material relative to at least one extruder surface during extrusion,
- wherein at atmospheric pressure at least one processing aid is solid at temperatures up to 160° C., and
- wherein the plurality of particles is distributed homogeneously throughout the closure.
21 more elements
A composition for use in manufacturing a closure for a product-retaining container, the composition comprising:
- (a) a plastic material comprising at least one thermoplastic polymer, wherein the at least one thermoplastic polymer comprises at least one polymer that is biodegradable according to ASTM D6400, and the at least one thermoplastic polymer is selected from the group consisting of:
- polyhydroxyalkanoates;
- copolymers of hydroxyalkanoates and monomers of biodegradable polymers;
- polylactic acid;
- copolymers of lactic acid and monomers of biodegradable polymers;
- polycaprolactone;
- polyglycolide;
- poly (3-hydroxybutyrate);
- poly (3-hydroxybutyrate-co-3-hydroxyvalerate);
- poly (3-hydroxybutyrate-co-3-hydroxyhexanoate);
- poly (butylenesuccinate);
- poly (butylenesuccinate-co-adipate);
- poly (trimethyleneterephthalate);
- poly (butylenadipate-co-terephthalate);
- poly (butylenesuccinate-co-terephthalate);
- poly (butylenesebacate-co-terephthalate);
- lactic acid caprolactone lactic acid copolymers;
- lactic acid ethylene oxide lactic acid copolymers;
- and combinations of any two or more thereof;
- (b) a plurality of particles comprising cork and having a particle size distribution D50measured by mechanical sieving according to ISO ICS 19.120 in a range of from 0.2 mm to 10 mm;
- (c) two or more processing aids, comprising at least one processing aid that reduces the melt viscosity of the plastic material, and at least one processing aid that reduces the friction of the plastic material relative to at least one extruder surface during extrusion;
- (d) optionally, at least one additive;
- and
- (e) at least one blowing agent wherein at atmospheric pressure at least one processing aid is solid at temperatures up to 160° C., and wherein the plurality of particles is distributed homogeneously throughout the closure.
21 more elements
A method for obtaining a composition for use in manufacturing a closure for a product-retaining container, the method comprising intimately combining the following components:
- (a) a plastic material comprising at least one thermoplastic polymer, wherein the at least one thermoplastic polymer comprises at least one polymer that is biodegradable according to ASTM D6400, and the at least one thermoplastic polymer is selected from the group consisting of:
- polyhydroxyalkanoates;
- copolymers of hydroxyalkanoates and monomers of biodegradable polymers;
- polylactic acid;
- copolymers of lactic acid and monomers of biodegradable polymers;
- polycaprolactone;
- polyglycolide;
- poly(3-hydroxybutyrate);
- poly(3-hydroxybutyrate-co-3-hydroxyvalerate);
- poly(3-hydroxybutyrate-co-3-hydroxyhexanoate);
- poly(butylenesuccinate);
- poly(butylenesuccinate-co-adipate);
- poly(trimethyleneterephthalate);
- poly(butylenadipate-co-terephthalate);
- poly(butylenesuccinate-co-terephthalate);
- poly(butylenesebacate-co-terephthalate);
- lactic acid caprolactone lactic acid copolymers;
- lactic acid ethylene oxide lactic acid copolymers;
- and combinations of any two or more thereof;
- (b) a plurality of particles comprising cork and having a particle size distribution D50measured by means of mechanical sieving according to ISO ICS 19.120 in a range of from 0.2 mm to 10 mm;
- c) two or more processing aids;
- (d) optionally, at least one additive;
- and
- (e) at least one blowing agent wherein at atmospheric pressure at least one processing aid is solid at temperatures up to 160° C., and wherein the plurality of particles is distributed homogeneously throughout the closure.
21 more elements
A method for manufacturing a closure for a product-retaining container constructed for being inserted and securely retained in a portal-forming neck of said container, said method comprising as method steps:
- i. intimately combining the following components, to form a composition:
- (a) a plastic material comprising at least one thermoplastic polymer, wherein the at least one thermoplastic polymer comprises at least one polymer that is biodegradable according to ASTM D6400, and the at least one thermoplastic polymer is selected from the group consisting of:
- polyhydroxyalkanoates;
- copolymers of hydroxyalkanoates and monomers of biodegradable polymers;
- polylactic acid;
- copolymers of lactic acid and monomers of biodegradable polymers;
- polycaprolactone;
- polyglycolide;
- poly(3-hydroxybutyrate);
- poly(3-hydroxybutyrate-co-3-hydroxyvalerate);
- poly(3-hydroxybutyrate-co-3-hydroxyhexanoate);
- poly(butylenesuccinate);
- poly(butylenesuccinate-co-adipate);
- poly(trimethyleneterephthalate);
- poly (butylenadipate-co-terephthalate);
- poly(butylenesuccinate-co-terephthalate);
- poly (butylenesebacate-co-terephthalate);
- lactic acid caprolactone lactic acid copolymers;
- lactic acid ethylene oxide lactic acid copolymers;
- and combinations of any two or more thereof;
- (b) a plurality of particles comprising cork and having a particle size distribution D50 measured by means of mechanical sieving according to ISO ICS 19.120 in a range of from 0.2 mm to 10 mm;
- (c) two or more processing aids, comprising at least one processing aid that reduces the melt viscosity of the plastic material, and at least one processing aid that reduces the friction of the plastic material relative to at least one extruder surface during extrusion;
- (d) optionally, at least one additive;
- and
- (e) at least one blowing agent wherein at atmospheric pressure at least one processing aid is solid at temperatures up to 160° C., and wherein the plurality of particles is distributed homogeneously throughout the closure;
- ii. heating the composition obtained in step i. to form a melt;
- iii. forming, by means of extrusion or molding, a closure precursor from the melt obtained in step ii.;
- and
- iv. optionally cutting and/or finishing the closure precursor to form the closure.
26 more elements
Dependencies are inferred from the claim text.