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Fruit and vegetable fresh-keeping plastic film and method for making the same

A fruit and vegetable fresh-keeping and plastic film technology, which is applied in the field of fruit and vegetable fresh-keeping plastic film containing inorganic functional materials and its preparation, can solve the problems of single efficacy and decline of single function, and achieve slowing down of endogenous metabolism speed, prolonging fresh-keeping period and quality assurance Effect, the effect of improving the effect of fruit and vegetable preservation

Inactive Publication Date: 2004-01-14
CHANGZHOU CHAMGO NANO MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention is a kind of fresh-keeping plastic film for fruits and vegetables and its manufacturing method, which overcomes the shortage of single function of the existing plastic film fresh-keeping bags, and adds various functional components such as inorganic moisture-permeable agents, antibacterial agents, and ethylene absorption and decomposition agents to the resin matrix. , and solve the problem of the decline of individual functions caused by the simultaneous use of various functional components, and provide a fresh-keeping film that can regulate the humidity, gas environment, and microbial activities in the bag, thereby improving the small environment for fruit and vegetable preservation. Significantly prolong the freshness period and quality preservation effect of fruits and vegetables

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024]Example 1 Add 2000g LDPE (2F0.4B of Yanshan Petrochemical Company, MI0.4g / 10min, 190°C, 2.16Kg) into a high-speed mixer, add 0.36g of silane coupling agent (Z6030 of Dow Corning Company) and 2ml of liquid Stir the paraffin for 1-5 minutes, then add 50g of CaCO with an average particle size of 40nm 3 And 20g average particle size is 25nm, specific surface area is 150m 2 / g of silver-loaded zinc zeolite antibacterial agent powder, 0.1g of medical stone (1200 mesh) loaded with potassium permanganate, 1g of antioxidant 1010, stirred for 2-5 minutes; then extruded by twin-screw at a temperature of 200°C Extrude and granulate to obtain the special material A for fruit and vegetable fresh-keeping plastic film. Example 2 Add 2000g LDPE (1F7B of Yanshan Petrochemical Company, MI7.0g / 10min, 190°C, 2.16Kg) into a high-speed mixer, add 0.10g of silane coupling agent (Z6030 of Dow Corning Company) and 4ml of liquid paraffin and stir 1-5 minutes, then add 50g of CaCO with an average...

Embodiment 3

[0025] Example 3 Add 1400g LLDPE (brand 149, produced in Korea), 600g LDPE (brand 26, Qilu Petrochemical Company) in high-speed mixer, add 0.36g of silane coupling agent (Dow Corning's Z6030) and 2ml of liquid paraffin and stir for 1 -5 minutes, then add 50g of CaCO with an average particle size of 40nm 3 And 20g average particle size is 25nm, specific surface area is 150m 2 / g of silver-loaded zinc zeolite antibacterial agent powder, 0.1g of medical stone (1200 mesh) loaded with potassium permanganate, 1g of antioxidant 1010, stirred for 2-5 minutes; then extruded by a twin-screw at a temperature of 190°C Extrude and granulate to obtain the special material C for fruit and vegetable fresh-keeping plastic film.

Embodiment 4

[0026] Example 4 Add 2000g PP (2401 of Yanshan Petrochemical Company, M12.0g / 10min, 230°C, 2.16Kg) into a high-speed mixer, add 0.36g of silane coupling agent (Z6030 of Dow Corning Company) and 2ml of liquid paraffin and stir 1-5 minutes, then add 50g of CaCO with an average particle size of 40nm 3 And 20g average particle size is 25nm, specific surface area is 150m 2 / g of silver-loaded zinc zeolite antibacterial agent powder, 0.1g of medical stone (1200 mesh) loaded with potassium permanganate, 1g of antioxidant 1010, stirred for 2-5 minutes; then extruded by twin-screw at a temperature of 200°C Extrude and granulate to obtain the special material D for fruit and vegetable fresh-keeping plastic film.

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Abstract

An antistaling plastic film for fruit and vegetable is prepared from the air-permeable inorganic moisture penetrating agent, antibacterial agent, ethylene absorbing and decomposing agent, and resin. Its advantage is high antistaling effect.

Description

Technical field: [0001] The invention relates to a fruit and vegetable fresh-keeping plastic film and a preparation method thereof, in particular to a fruit and vegetable fresh-keeping plastic film containing inorganic functional materials and a preparation method thereof. Background technique: [0002] Fruits and vegetables are indispensable food for human beings. With the development of agricultural technology, the improvement, innovation and promotion of fruit and vegetable varieties are very rapid, and the value of fruits and vegetables is getting higher and higher. The post-harvest fresh-keeping technology of fruits and vegetables can overcome the limitations of time, space, climate and other conditions, so that fruits and vegetables can be circulated. The role of quality assurance and improving its commodity value is very important. [0003] Post-harvest fresh-keeping technologies for fruits and vegetables include low-temperature cold storage, air-conditioning, preser...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08K3/34C08L23/00C08L27/06
Inventor 李毕忠陈万青徐绍刚
Owner CHANGZHOU CHAMGO NANO MATERIALS
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