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Anti-mildew modified atmosphere packaging film for fruits and vegetables and preparation method for mildew-proof modified atmosphere packaging film

A technology for air-conditioning fresh-keeping and fresh-keeping film, which is applied in the fields of fruit and vegetable fresh-keeping, chemical instruments and methods, food preservation, etc., can solve the problems of easy particle agglomeration, high cost, large investment, etc. good performance

Active Publication Date: 2013-01-23
TIANJIN JIEDONG FRESH PRESERVATION TECH PRODIVITY PROMOTION CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low-temperature artificial atmosphere storage method has high cost and large investment, and consumers cannot continue to use this method for fresh-keeping storage after it is sold out. Cloth nano-materials, but the distribution of coated nano-materials is uneven, and the particles are easy to agglomerate, which does not achieve a good fresh-keeping effect

Method used

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  • Anti-mildew modified atmosphere packaging film for fruits and vegetables and preparation method for mildew-proof modified atmosphere packaging film
  • Anti-mildew modified atmosphere packaging film for fruits and vegetables and preparation method for mildew-proof modified atmosphere packaging film
  • Anti-mildew modified atmosphere packaging film for fruits and vegetables and preparation method for mildew-proof modified atmosphere packaging film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh the raw materials according to the following ratio:

[0034]

[0035] The method for preparing fruit and vegetable anti-mold air-conditioned fresh-keeping film with the above-mentioned raw materials is as follows:

[0036] (1) Preparation of masterbatch:

[0037]

[0038] Add the above-mentioned raw materials to a high-speed mixer in proportion, first stir at a low speed of 60r / min for 2 minutes, and then stir at a high speed of 130r / min for 5 minutes to obtain a uniformly mixed mixture; After being weighed, it is added to a high-speed twin-screw exhaust type mixing and extruding granulator to be processed into strands, and the strands are made into master batches by a cold cutting machine;

[0039] (2) Preparation of modified atmosphere fresh-keeping film: mix the masterbatch and the remaining 3 resins uniformly, and enter the single screw extrusion blow molding machine with a diameter of 45mm and a rotation speed of 45r / min through the feeding system. Film is blown int...

Embodiment 2

[0043] Weigh the raw materials according to the following ratio:

[0044]

[0045] The method for preparing fruit and vegetable anti-mold air-conditioned fresh-keeping film with the above-mentioned raw materials is as follows:

[0046] (1) Preparation of masterbatch:

[0047]

[0048] Add the above-mentioned raw materials to a high-speed mixer in proportion, first stir at a low speed of 80r / min for 2 minutes, and then stir at a high speed of 150r / min for 5 minutes to obtain a uniformly mixed mixture; After being weighed, it is added to a high-speed twin-screw exhaust type mixing and extruding granulator to be processed into strands, and the strands are made into master batches by a cold cutting machine;

[0049] (2) Preparation of modified atmosphere cling film: mix the masterbatch and the remaining 3 resins uniformly, and enter the single screw extrusion blow molding machine with a diameter of 65mm and a rotation speed of 45r / min through the feeding system. Film is blown into a film...

Embodiment 3

[0053] Weigh the raw materials according to the following ratio:

[0054]

[0055] The method for preparing fruit and vegetable anti-mold air-conditioned fresh-keeping film with the above-mentioned raw materials is as follows:

[0056] (1) Preparation of masterbatch:

[0057]

[0058]

[0059] Add the above-mentioned raw materials to a high-speed mixer in proportion, first stir at a low speed of 50r / min for 1 minute, and then stir at a high speed of 120r / min for 2 minutes to obtain a uniformly mixed mixture; After being weighed, it is added to a high-speed twin-screw exhaust type mixing and extruding granulator to be processed into strands, and the strands are made into master batches by a cold cutting machine;

[0060] (2) Preparation of modified atmosphere cling film: mix the masterbatch and the remaining 3 resins uniformly, and enter the single screw extrusion blow molding machine with a diameter of 65mm and a rotation speed of 45r / min through the feeding system. Film is blown int...

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Abstract

The invention discloses an anti-mildew modified atmosphere packaging film, which is prepared from the following components in parts by weight: 100 parts of low density polyethylene resin, 10 to 30 parts of linear polyethylene resin, 10 to 25 parts of ethylene-vinyl acetate resin, 0.5 to 5 parts of antioxidant, 0.5 to 1 part of antistatic agent, 1 to 2 parts of lubricant, 1 to 3 parts of silane coupling agent, 0.5 to 1.5 parts of anti-fogging agent, 5 to 10 parts of calcium carbonate master batch and 0.5 to 2 parts of nano zinc oxide coating solution. The invention also discloses a preparation method for the packaging film. The packaging film prepared by the method has an anti-oxidation function, an anti-fog function, an antibacterial function, an anti-mildew function and a fruit and vegetable respiration adjustment function, the refreshing time of fruits and vegetables can be prolonged, and the quality of the fruits and the vegetables can be improved.

Description

Technical field [0001] The invention relates to a fresh-keeping film for agricultural products, in particular to a fresh-keeping film for fruits and vegetables with mildew-proof atmosphere and a preparation method thereof. Background technique [0002] Fruits and vegetables are important non-staple foods in people's lives, the second largest category of agricultural products after grains, and important raw materials for the food industry. However, due to poor post-harvest preservation and anti-corrosion technology, post-harvest losses of fruits and vegetables are as high as 20% to 30%, while the UN Food and Agriculture Organization's indicator is only 5%. [0003] At present, domestic fruit and vegetable preservation mainly adopts low-temperature artificial atmosphere storage method and the packaging method using small-package plastic wrap. The low-temperature artificial atmosphere storage method has high cost and large investment, and consumers cannot continue to use this method ...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/18B32B27/30B32B27/32C08L23/06C08L23/08C08K13/02C08K5/103C08K3/26C08J3/28C08J3/22C09D171/08C09D7/12A23B7/00
Inventor 李喜宏杜林雪刘海东
Owner TIANJIN JIEDONG FRESH PRESERVATION TECH PRODIVITY PROMOTION CENT
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