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Fresh-keeping packaging material for tomatoes

A technology of fresh-keeping packaging and packaging materials, applied in the field of packaging materials, can solve the problems of lack of fresh-keeping technology, low sales price, tomato backlog, etc., and achieve the effects of inhibiting ripening and aging, low cost, and improving shelf life and storage period.

Active Publication Date: 2014-06-18
北京鉴真保鲜科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Every July-August is the season when tomatoes are on the market in my country, but due to the lack of fresh-keeping technology, tomatoes can only be sold in the place of origin, resulting in a large backlog of tomatoes, low sales prices, and a high rot rate. Therefore, a fresh-keeping packaging is urgently needed to solve the problem. The problem of tomato storage to meet the needs of long-distance transportation

Method used

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  • Fresh-keeping packaging material for tomatoes

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Effect test

preparation example Construction

[0023] 1.2 Preparation of tomato fresh-keeping film

[0024] After physically blending W1 parts of LDPE, W2 parts of LLDPE, W3 parts of HDPE with W4 parts of SBS, W5 parts of POE, W6 parts of EPDM, W7 parts of EVA, W8 parts of PB, W9 parts of NR and other amorphous polymers, at 150-210 The modified polyethylene resin is prepared by melting and blending at ℃, and then prepared into a PE modified film of 10-50 microns as required, and prepared into a fresh-keeping bag of a certain size as required.

[0025] 2 Tests on tomato fresh-keeping performance

[0026] In the farm, take no mechanical damage, no germ infection, fruit has turned red and harder tomatoes in the mature stage, put them on the polypropylene plastic tray, and then pack them into the tomato fresh-keeping bag and the comparison bag made by the present invention. Each bag contains about 1,000 grams of tomatoes, and then seals the bag and places it at a room temperature of 25°C to detect the rotten fruit rate, hardn...

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Abstract

The invention relates to a fresh-keeping packaging material for tomatoes and belongs to packaging materials. The packaging material is of a single-layer structure and is a film formed by melt blending of one or more of LDPE (low-density polyethylene), LLDPE (linear low-density polyethylene) and HDPE (high-density polyethylene) serving as matrix resin with 15-50wt% of amorphous polymers prior to blow molding, wherein the amorphous polymers are one or more of styrene-butadiene segmented copolymers, ethylene propylene diene monomer rubber, ethylene / octene copolymers, polybutadiene, natural rubber and ethylene-vinyl acetate copolymers. The fresh-keeping packaging material for the tomatoes has special fresh-keeping effect for the tomatoes and can enable the tomatoes to turn red completely but still keep hard, and the storage life of the tomatoes in a full ripe stage at the normal temperature (25 DEG C) can be longer than 60 days.

Description

technical field [0001] The invention belongs to packaging materials, and relates to a fresh-keeping film mainly for tomatoes and a preparation method thereof. Background technique [0002] Tomatoes are one of the main agricultural products in my country. They are planted in both the north and the south of the country. Only in Xinjiang, the planting area is more than 1.1 million mu, the tomato output is more than 5 million tons, and the tomato paste is 1 million tons. [0003] The "tomato element" contained in tomato has the effect of inhibiting bacteria; the malic acid, citric acid and sugar contained in tomato can help digestion; the organic acids such as malic acid and citric acid in tomato can also increase the acidity of gastric juice and help Digest and adjust gastrointestinal function; in addition, tomato contains fruit acid, which can lower cholesterol content and is very beneficial to hyperlipidemia; it is also rich in vitamin A, vitamin C, vitamin V1, vitamin B2, ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/06C08L53/02C08L23/16C08L9/00C08L7/00A23B7/00
Inventor 许文才李东立付亚波齐英群曹国荣刘全校
Owner 北京鉴真保鲜科技有限公司
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