Food packaging material and manufacturing process thereof

A food packaging and substrate layer technology, applied in the field of packaging materials, can solve the problems of expensive biological raw materials and additives, high cost, and restrictions on widespread use, and achieve good degradable properties, scientific ingredients, and high tensile strength.

Inactive Publication Date: 2017-12-01
柏翠云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the food packaging materials used in the market are non-degradable. Even if some packaging materials are biodegradable, they use a lar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: a kind of food packaging material, comprises base material layer and impermeable layer, and described base material layer is paper, and described impermeable layer is starch-based biodegradable plastic film, and it comprises following mass percent components:

[0054] Thermoplastic starch, 45%;

[0055] Polyethylene, 20%;

[0056] Polyvinyl alcohol, 12%;

[0057] Modified polylactic acid, 8%;

[0058] Plasticizer, 11%;

[0059] lubricant, 1%;

[0060] Hydrophobic agent, 1%;

[0061] Cellulose, 1%;

[0062] Cross-linking agent, 1%.

[0063] The grammage of the present embodiment is 350-600g / m 2 , increases with the increase of thickness, and the degradation time is greater than 270 days.

Embodiment 2

[0064] Embodiment 2: a kind of food packaging material, comprises base material layer and impermeable layer, and described base material layer is tin foil, and described impermeable layer is starch-based biodegradable plastic film, and it comprises following mass percent components:

[0065] Thermoplastic starch, 50%;

[0066] Polyethylene, 18%;

[0067] Polyvinyl alcohol, 10%;

[0068] Modified polylactic acid, 6%;

[0069] Plasticizer, 10%;

[0070] Lubricant, 1.5%;

[0071] Hydrophobic agent, 1.5%;

[0072] Cellulose, 1.5%;

[0073] Cross-linking agent, 1.5%.

[0074] The grammage of the present embodiment is 260-450g / m 2 , The degradation time is greater than 240 days.

Embodiment 3

[0075] Embodiment 3: a kind of food packaging material, comprises base material layer and impermeable layer, and described base material layer is tin foil, and described impervious layer is starch-based biodegradable plastic film, and it comprises following mass percent components:

[0076] Thermoplastic starch, 55%;

[0077] Polyethylene, 16%;

[0078] Polyvinyl alcohol, 8%;

[0079] Modified polylactic acid, 4%;

[0080] Plasticizer, 9%;

[0081] lubricant, 2%;

[0082] Hydrophobic agent, 2%;

[0083] Cellulose, 2%;

[0084] Cross-linking agent, 2%;

[0085] The other side of the substrate layer of the packaging material is provided with a pressed pattern.

[0086] The grammage of the present embodiment is 150-400g / m 2 , the degradation time is greater than 180 days.

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Abstract

The invention discloses a food packaging material and a manufacturing process thereof. The food packaging material comprises a base material layer and an anti-osmosis layer. The anti-osmosis layer is starch-based biodegradable plastic film which is prepared from the following ingredients in percentages by mass: 45 to 55% of thermoplastic starch which is plasticized and modified through an alcohol plasticizer or an amine plasticizer, 13 to 20% of polyethylene, 8 to 12% of polyvinyl alcohol, 3 to 8% of modified polylactic acid, 5 to 11% of plasticizers, 1 to 2% of lubricants, 1 to 2% of hydrophobic agents, 1 to 2% of cellulose and 1 to 2% of cross-linking agents. According to the invention, the anti-osmosis layer adopts the low-cost starch as the main base material, so as to has good degradation performance in accordance with the national standard, and the food packaging material has the advantages of being resistant to water and oil, resistant to leakage, high in tensile strength, high in flexibility, capable of being applied within the temperature range of minus 50 DEG C to 120 DEG C and the like; and the product provided by the invention contains no poisonous additive and is scientific in matching, simple in process, low in energy consumption, applicable to automatic mechanical production, and particularly innoxious and harmless.

Description

technical field [0001] The invention relates to a packaging material, in particular to a food packaging material and a manufacturing process thereof. Background technique [0002] Traditional food packaging materials usually have high strength and toughness, and can withstand pressure and folding. Because they need to be in direct contact with food, they have the characteristics of cleanliness, non-toxicity, and no germs. The quality requirements are higher than cultural printing paper and other paper. Its main structure includes base paper layer and impervious layer. However, most of the food packaging materials used in the market are non-degradable. Even if some packaging materials are biodegradable, they use a large number of expensive biological raw materials and additives. These high costs limit their use in disposable packaging. widely used in commodities. Contents of the invention [0003] In order to solve the problems in the prior art, the invention provides a l...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08L23/06C08L29/04C08L67/04C08L1/28C08L23/08C08L71/02C08K5/20B65D65/46
CPCB65D65/466C08K2201/014C08L3/02C08L2201/06C08L2205/025C08L2205/035C08L2207/062C08L2207/066C08L23/0815C08L23/06C08L29/04C08L67/04C08L1/286C08L23/0884C08K5/20C08L71/02Y02A40/90Y02W90/10
Inventor 柏翠云
Owner 柏翠云
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