DEGRADABLE PACKAGES-SACHETS FOR EMERGING MARKETS Russian patent published in 2015 - IPC C08J7/06 B32B27/08 B32B27/36 A45D37/00 B65D65/40 

FIELD: packaging industry.

SUBSTANCE: group of inventions relates to a package suitable for placement of liquid consumer product, such as shampoo, conditioner, soap, toothpaste, and detergent. The package comprises a biodegradable sealant having thickness of 12 microns to 100 microns, and a barrier material which covers the biodegradable sealant selected from the group consisting of metals, metal oxide, nanoclay, and their mixture. The barrier material has thickness of from 200 E to 50 microns and a surface having the energy of at least 38 dynes/cm, or processed to the energy of at least 38 dynes/cm. The package may also comprise a layer containing a mixture of a biodegradable sealant and the barrier material selected from the group consisting of polyglycolic acid, polyolefin, filler and their mixture, in an amount of 1 vol % to 40 vol % based on the total volume of the layer, at that the layer has a thickness of from 25 microns to 100 microns, and the surface having the energy of at least 38 dynes/cm, or processed to the energy of at least 38 dynes/cm. The package containing the biodegradable sealant and the barrier material covering the biodegradable sealant or a layer containing a mixture of the biodegradable sealant and the barrier material also comprises a layer of printing ink applied on the barrier material or the layer made of a mixture of the biodegradable sealant and the barrier material, where the printing ink layer has a thickness of from 1 to 20 microns. The package has a moisture vapour transmission rate of less than 10 g/m²/day at 37°C and 90% relative humidity, and is characterised by the storage time which is at least about one year and for two years after the first and continuous exposure to water and microorganisms decomposing the sealant it decomposes into fragments which are small enough to pass through the sieve of one millimetre.

EFFECT: improvement of the design.

16 cl, 3 dwg