Micropore preservative film for garden stuff

A fresh-keeping film and microporous technology, which is used in the protection of fruits/vegetables, applications, household appliances, etc. with a protective layer, can solve the problems of not being able to play a good role in fresh-keeping and no two-way adjustment, and achieve the performance and structure of the film. Stable, good opening, humidity reduction effect

Inactive Publication Date: 2009-08-05
天津市食品加工工程中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

no o 2 and CO 2 Two-way adjustment function, can not play a good role in keeping fresh

Method used

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  • Micropore preservative film for garden stuff
  • Micropore preservative film for garden stuff
  • Micropore preservative film for garden stuff

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Low-density polyethylene resin 100 kg

[0051] Ethylene-vinyl acetate resin 20 kg

[0052] Linear Polyethylene Resin 10kg

[0053] Superfine Calcium Carbonate 13kg

[0054] Superfine Medical Stone 8kg

[0055] Tween 80 1 kg

[0056] Anti-fogging agent: glycerol monooleate 1.0 kg

[0057] Antistatic agent SWJU-1 1.5 kg

[0058] 1076 antioxidant 0.5 kg

[0059] Polyethylene wax 0.6 kg

[0060] The ingredients are weighed according to the above proportions, after being mixed by a plastic particle mixer, blown by a Φ45-Φ65mm single-screw extrusion blow molding machine, and stretched vertically and horizontally to form a film. The screw speed of blow molding is 45r / min, and the temperature of the four stages is: 100°C, 145°C, 165°C, 180°C. The pore diameter of the prepared film is 0.1-3um, and the porosity is 40%-55%.

[0061] 1. The production of masterbatch, which is filled with high-speed twin-screw exhaust type gripping extrusion granulation unit, the production...

Embodiment 2

[0066] in

[0067] Low-density polyethylene resin 100 kg

[0068] Ethylene-vinyl acetate resin 10 kg

[0069] Linear polyethylene resin 8 kg

[0070] Superfine Calcium Carbonate 5kg

[0071] Superfine Medical Stone 5kg

[0072] Tween 80 1 kg

[0073] Anti-fog agent 0.5 kg

[0074] Antistatic agent SWJU-1 1 kg

[0075]1076 antioxidant 0.3 kg

[0076] Polyethylene wax 0.5 kg

[0077] The ingredients are weighed according to the above proportions, after being mixed by a plastic particle mixer, blown by a Φ45-Φ65mm single-screw extrusion blow molding machine, and stretched vertically and horizontally to form a film. The screw speed of blow molding is 45r / min, and the temperature of the four stages is: 100°C, 145°C, 165°C, 180°C. The pore diameter of the prepared film is 0.1-3um, and the porosity is 40%-55%.

Embodiment 3

[0079] Low-density polyethylene resin 100 kg

[0080] Ethylene-vinyl acetate resin 25 kg

[0081] Linear Polyethylene Resin 15kg

[0082] Superfine Calcium Carbonate 18kg

[0083] Superfine Medical Stone 15kg

[0084] Tween 80 5 kg

[0085] Anti-fog agent 1.5kg

[0086] Antistatic agent SWJU-1 3 kg

[0087] 1076 antioxidant 0.6 kg

[0088] Polyethylene wax 3 kg

[0089] The ingredients are weighed according to the above proportions, after being mixed by a plastic particle mixer, blown by a Φ45-Φ65mm single-screw extrusion blow molding machine, and stretched vertically and horizontally to form a film. The screw speed of blow molding is 45r / min, and the temperature of the four stages is: 100°C, 145°C, 165°C, 180°C. The pore diameter of the prepared film is 0.1-3um, and the porosity is 40%-55%.

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Abstract

A fruit and vegetable millipore preservative film comprises the following components of 100 portions of low-density polyethylene resin, 20 portions of ethene-vinyl acetate resin, 10 portions of linear polyethylene resin, 13 portions of superfine calcium carbonate, 8 portions of superfine medical stone, one portion of Tween 80, 0.5-1.5 portions of antifogging agent, 1.5 portions of SWJU-1 anlistatig, 0.5 portions of antioxidizer1076 and 0.6 portions of polyethylene wax. After organized processing by acetic acid, inorganic functional materials are used to prepare master batch together with polyethylene base material and other functional components by coextrusion; the materials are mixed through diatexis according to the proportion; blow molding is carried out on a single screw extruder; a film is formed through bidirectional biaxial tension in a longitudinal and transverse way; and the rotate speed of the screw and the traction speed are adjusted to ensure that the aperture of the millipore of the formed film is 0.1-3 microns, and the poriness is 40-55 percent. The manufactured film has bidirectional adjusting ability of O2 and CO2, and therefore, when used for small-package storage, the film can spontaneously adjust air and has good moisture permeability without condensation of moisture in the bag.

Description

technical field [0001] The invention belongs to fruit and vegetable fresh-keeping film, in particular to a fruit and vegetable microporous fresh-keeping film and a production method. Background technique [0002] Its fresh-keeping performance of general preservative film can't be perfect at present. When the plastic wrap is used to keep fruits and vegetables fresh, the plastic wrap (inside the bag) will condense when the temperature fluctuates during the storage period. no o 2 and CO 2 The two-way adjustment function cannot bring into play the preservation effect well. Contents of the invention [0003] The object of the present invention is to provide a microporous fresh-keeping film for fruits and vegetables and its production method, which overcomes the technical shortcomings and deficiencies of the existing general fresh-keeping film, and improves its practical fresh-keeping effect. [0004] The object of the present invention is achieved in this way: [0005] A k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/02C08K3/00B29C55/28A23B7/16B29L7/00
Inventor 李喜宏陈杨薛丽霞杨其阔姜云斌邱松山
Owner 天津市食品加工工程中心
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