Biodegradable film for inner packaging of hygienic products

Abstract

The invention discloses a biodegradable film for inner package of hygienic products. The biodegradable film comprises the following raw materials in parts by weight: 8-15 parts of cellulose, 10-20 parts of starch, 40-65 parts of polylactic acid, 10-20 parts of a softening and toughening agent, 3-10 parts of an antioxidant, 3-10 parts of an antibacterial agent and 1-4 parts of graphene. The polylactic acid (PLA) is used as a matrix polymer, cellulose is added to improve the strength, the softening and toughening agent, starch and graphene are added to promote the mixing reaction of cellulose and polylactic acid, the antioxidant is added to improve the product stability, and the product has good antibacterial property through adding of the the antibacterial agent. The product is safe, non-toxic, good in barrier property, excellent in film forming quality and capable of being completely degraded, and all performance indexes meet the national standard; the product can be automatically degraded under natural conditions, the number of non-degradable waste plastic parts in the environment can be reduced, and the pressure of environmental pollution is relieved.

Description

technical field

[0001] The invention relates to the technical field of polymer materials, in particular to a biodegradable film for inner packaging of sanitary products. Background technique

[0002] With the global exploitation of oil in large quantities, polymer resins have brought abundant material resources to people's daily life, and the use of disposable plastic products, personal hygiene products, and packaging materials has brought great convenience to people; but At the same time, disposable plastic products, personal hygiene products, packaging materials and other wastes after use seriously pollute the global environment. They can exist stably in nature for a long time and are difficult to degrade. Therefore, it is difficult to recycle them after they are discarded, causing serious damage to the environment. pollute.

[0003] In recent years, the application and development of biodegradable materials in the plastic packaging industry has been rapid, and the qualit...

Examples

Embodiment 1

[0022] A biodegradable film for the inner packaging of sanitary products, comprising the following raw materials in weight fractions: 10 parts of cellulose, 15 parts of starch, 50 parts of polylactic acid, 15 parts of softening and toughening agent, 4 parts of antioxidant, 4 parts of antibacterial agent, Graphene 2 parts.

[0023] The cellulose is a mixture obtained by mixing corn stalk fiber and bamboo fiber at a ratio of 1:1 (weight ratio), and the fineness is 100-300 mesh; the starch is corn starch and wheat starch at a ratio of 1:1 (weight ratio). Mix the obtained mixture, and the fineness is 100-300 mesh; the polylactic acid (PLA) is used as the matrix polymer, and the number average molecular weight is 100000~300000; ratio) mixed mixture of the gained; the antioxidant is a mixture of tea polyphenols, vitamin E, sodium citrate by 1:1:1 (weight ratio); the antibacterial agent is allicin, chitin by 2: 1 (weight ratio) mixes the resulting mixture; the fineness of the graphe...

Embodiment 2

[0033] A biodegradable film for the inner packaging of sanitary products, comprising the following raw materials in weight fractions: 8 parts of cellulose, 10 parts of starch, 65 parts of polylactic acid, 10 parts of softening and toughening agent, 3 parts of antioxidant, 3 parts of antibacterial agent, 1 part of graphene.

[0034] The cellulose is corn stalk fiber with a fineness of 100-300 mesh; the starch is corn starch with a fineness of 100-300 mesh; the polylactic acid (PLA) is used as a matrix polymer with a number average molecular weight of 100,000 ~300000; the softening and toughening agent is glycerin; the antioxidant is tea polyphenol; the antibacterial agent is allicin; the fineness of the graphene is 100-200 mesh.

Embodiment 3

[0036] A biodegradable film for the inner packaging of sanitary products, comprising the following raw materials in weight fractions: 15 parts of cellulose, 15 parts of starch, 40 parts of polylactic acid, 20 parts of softening and toughening agent, 3 parts of antioxidant, 3 parts of antibacterial agent, Graphene 4 parts.

[0037] The cellulose is one or more of corn stalk fiber, bamboo fiber, flax, hemp, jute, kenaf, sisal, Manila hemp, ramie, and oil palm, and the fineness is 100-300 mesh; the starch is one or more of corn starch, wheat starch, tapioca starch, sweet potato starch, and potato starch, and the fineness is 100-300 mesh; the polylactic acid (PLA) is used as the matrix polymer , the number average molecular weight is 100,000~300,000; the softening and toughening agent is one or more of sorbitol, glycerin, propylene glycol, glucose, fructose, sucrose; the antioxidant is eugenol, tea polyphenol, vitamin One or more of E, vitamin C, sodium citrate, purple sweet pota...

technical field

[0001] The invention relates to the technical field of polymer materials, in particular to a biodegradable film for inner packaging of sanitary products. Background technique

[0002] With the global exploitation of oil in large quantities, polymer resins have brought abundant material resources to people's daily life, and the use of disposable plastic products, personal hygiene products, and packaging materials has brought great convenience to people; but At the same time, disposable plastic products, personal hygiene products, packaging materials and other wastes after use seriously pollute the global environment. They can exist stably in nature for a long time and are difficult to degrade. Therefore, it is difficult to recycle them after they are discarded, causing serious damage to the environment. pollute.

[0003] In recent years, the application and development of biodegradable materials in the plastic packaging industry has been rapid, and the qualit...

Examples

Embodiment 1

[0022] A biodegradable film for the inner packaging of sanitary products, comprising the following raw materials in weight fractions: 10 parts of cellulose, 15 parts of starch, 50 parts of polylactic acid, 15 parts of softening and toughening agent, 4 parts of antioxidant, 4 parts of antibacterial agent, Graphene 2 parts.

[0023] The cellulose is a mixture obtained by mixing corn stalk fiber and bamboo fiber at a ratio of 1:1 (weight ratio), and the fineness is 100-300 mesh; the starch is corn starch and wheat starch at a ratio of 1:1 (weight ratio). Mix the obtained mixture, and the fineness is 100-300 mesh; the polylactic acid (PLA) is used as the matrix polymer, and the number average molecular weight is 100000~300000; ratio) mixed mixture of the gained; the antioxidant is a mixture of tea polyphenols, vitamin E, sodium citrate by 1:1:1 (weight ratio); the antibacterial agent is allicin, chitin by 2: 1 (weight ratio) mixes the resulting mixture; the fineness of the graphe...

Embodiment 2

[0033] A biodegradable film for the inner packaging of sanitary products, comprising the following raw materials in weight fractions: 8 parts of cellulose, 10 parts of starch, 65 parts of polylactic acid, 10 parts of softening and toughening agent, 3 parts of antioxidant, 3 parts of antibacterial agent, 1 part of graphene.

[0034] The cellulose is corn stalk fiber with a fineness of 100-300 mesh; the starch is corn starch with a fineness of 100-300 mesh; the polylactic acid (PLA) is used as a matrix polymer with a number average molecular weight of 100,000 ~300000; the softening and toughening agent is glycerin; the antioxidant is tea polyphenol; the antibacterial agent is allicin; the fineness of the graphene is 100-200 mesh.

Embodiment 3

[0036] A biodegradable film for the inner packaging of sanitary products, comprising the following raw materials in weight fractions: 15 parts of cellulose, 15 parts of starch, 40 parts of polylactic acid, 20 parts of softening and toughening agent, 3 parts of antioxidant, 3 parts of antibacterial agent, Graphene 4 parts.

[0037] The cellulose is one or more of corn stalk fiber, bamboo fiber, flax, hemp, jute, kenaf, sisal, Manila hemp, ramie, and oil palm, and the fineness is 100-300 mesh; the starch is one or more of corn starch, wheat starch, tapioca starch, sweet potato starch, and potato starch, and the fineness is 100-300 mesh; the polylactic acid (PLA) is used as the matrix polymer , the number average molecular weight is 100,000~300,000; the softening and toughening agent is one or more of sorbitol, glycerin, propylene glycol, glucose, fructose, sucrose; the antioxidant is eugenol, tea polyphenol, vitamin One or more of E, vitamin C, sodium citrate, purple sweet pota...