Granted Patent B2

US 12,692,067 · App. 18/652,470 · Granted Jul 28, 2026

Inventors: Valerio Miozzo (Saint-Jorioz, FR); Hervé Planchard (Crach, FR); Florence Vidal (Saint Cyr Au Mont D'Or, FR); Mireille Roux (Givors, FR)

Assignee: AHLSTROM OYJ

B65D85/8043A47J31/407B32B5/022B32B7/12B32B29/02A47J31/3623B32B2262/0276B32B2262/062B32B2307/31B32B2307/7163B32B2307/7244B32B2435/02B32B2439/40B32B2439/70B65D65/466B65D85/804Y02W90/10Y10T428/1362Y10T428/3179

Abstract

Claims (23)

1 . A compostable lid, the lid composed of a multilayer complex successively comprising:

a non-woven material comprising fibers, of which at least 50% by weight of the fibers are composed of biodegradable fibers;

an adhesive layer suitable for coming into contact with food; and

a support layer comprising vegetable parchment having a wet burst strength measured according to ISO 3689 and a dry burst strength measured according to ISO 2758, and wherein the ratio of the wet burst strength to the dry burst strength is between 50 to 70 percent.

2 . The compostable lid according to claim 1 , characterized in that at least 40% by weight of the biodegradable fibers are heat-sealable fibers.

3 . The compostable lid according to claim 1 , characterized in that the biodegradable fibers are selected from the group of fibers consisting of polylactic acid, polyhydroxyalkanoate, poly(hydroxybutyrate), poly(hydroxybutyrate-co-hydroxyvalerate), poly(butylenesuccinate), biopolyesters, and cellulose fibers.

4 . The compostable lid according to claim 2 , characterized in that the heat sealable fibers are selected from the group of fibers consisting of polylactic acid, polyhydroxyalkanoate, poly(hydroxybutyrate), poly(hydroxybutyrate-co-hydroxyvalerate), poly (butylenesuccinate), and biopolyesters.

5 . The compostable lid according to claim 1 , characterized in that the non-woven material comprises heat-sealable fibers that have a melting point of about 100° C. or greater.

6 . The compostable lid according to claim 1 , characterized in that the non-woven material comprises 100% by weight of fibers, of which at least 50% by weight are composed of polylactic acid fibers.

7 . The compostable lid according to claim 6 , characterized in that the fibers of the non-woven material are composed exclusively of polylactic acid.

8 . The compostable lid according to claim 1 , characterized in that the grammage of the non-woven material is between 5 and 100 g/m 2 .

9 . The compostable lid according to claim 1 , characterized in that the non-woven material is a bilayer.

10 . The compostable lid according to claim 1 , characterized in that the adhesive layer is an acrylic adhesive.

11 . The compostable lid according to claim 1 , characterized in that the adhesive represents between 1 and 5 g/m 2 dried with respect to the surface of the multilayer complex.

12 . The compostable lid according to claim 1 , characterized in that the grammage of the support layer is between 30 and 120 g/m 2 .

13 . The compostable lid according to claim 1 , wherein the support layer has an oxygen transfer rate less than 1.5 ml/m 2 /day, measured at an atmospheric pressure of 1.013 bar, a temperature of 23° C., and a relative humidity of 50% according to ASTM D3895 and ASTM F1927.

14 . The compostable lid according to claim 1 , wherein the support layer has a wet burst strength measured according to ISO 3689 and a dry burst strength measured according to ISO 2758, and wherein the ratio of the wet burst strength to the dry burst strength is between 55 to 65 percent.

15 . The compostable lid according to claim 1 , wherein the support layer has a thickness between 60 to 150 micrometers.

16 . The compostable lid according to claim 1 , wherein the lid is compostable by the EN 13432 standard.

17 . A food packaging comprising the compostable lid according to claim 1 .

18 . The food packaging according to claim 17 , wherein the compostable lid extends from a first surface to a second surface, the non-woven material positioned proximal to the second surface and the support layer positioned proximal to the first surface, with the adhesive layer positioned between the non-woven material and the support layer; and

wherein the second surface of the compostable lid is affixed to a surface of a flange of a capsule body of the food packaging to seal the food packaging, with the non-woven material facing inwards towards the food packaging.

19 . The food packaging according to claim 17 , wherein the food packaging is compostable by the EN 13432 standard.

Assignments (3)

Priority Claims (1)

Continuity (3)

References Cited (136)