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Visual easy-to-tear food packaging film and preparation process thereof

A food packaging film and film layer technology, which is applied in the field of food packaging materials, can solve the problems of increased moisture permeability and decreased film transparency, and achieves the effect of simple preparation and operation, and easy industrial production

Pending Publication Date: 2021-11-23
浙江大汇新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of rising moisture permeability and decreasing film transparency in related technologies, this application provides a visible and easy-to-tear food packaging film and its preparation process

Method used

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  • Visual easy-to-tear food packaging film and preparation process thereof
  • Visual easy-to-tear food packaging film and preparation process thereof
  • Visual easy-to-tear food packaging film and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0081] The anti-fog masterbatch is prepared from 6.0kg of linear low density polyethylene, 3.0k of triglycerol monostearate, and 1.0kg of genuine BASF polyethylene wax emulsion. Among them, the preparation of anti-fog masterbatch: blend 6.0kg of linear low density polyethylene, 3.0k of triglycerol monostearate, and 1.0kg of genuine BASF polyethylene wax emulsion, and add them to the twin-screw extruder , extruded at an extrusion temperature of 204°C, and granulated to obtain an anti-fog masterbatch with a particle size of 1.0-1.2mm.

preparation example 2

[0083] The antibacterial masterbatch is prepared from 6.0kg of linear low density polyethylene, 3.0kg of sodium dehydroacetate and 1.0kg of calcium propionate. Among them, the preparation of antibacterial masterbatch: 6.0kg of linear low density polyethylene, 3.0kg of sodium dehydroacetate, and 1.0kg of calcium propionate were blended, added to a twin-screw extruder, and extruded at a temperature of 205°C. out and granulated to obtain an antibacterial masterbatch with a particle size of 1.0-1.2mm.

preparation example 3

[0085] Preparation of breathable masterbatch: first blend 1.2kg of low-density polyethylene, 3.0kg of linear low-density polyethylene, and 1.8kg of metallocene linear low-density polyethylene, and then blend with 4.0kg of calcium carbonate, add into a twin-screw extruder, extruded at an extrusion temperature of 202°C, and granulated to obtain a breathable masterbatch A.

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Abstract

The invention relates to the field of food packaging materials, in particular to a visible easy-to-tear food packaging film and a preparation process thereof. The visible easy-to-tear food packaging film comprises visible functional film layers and an easy-to-uncover film layer, and a heat-seal edge area and a breathable area are formed on the easy-to-uncover film layer; a plurality of ventilation holes are formed in the ventilation area of the easy-to-uncover film layer; the visual functional film layers are formed on the two surfaces of the easy-to-uncover film layer through hot pressing; and the printing layer is compounded on the surface, opposite to the easy-to-uncover film layer, of the visible functional film layer. The visible easy-to-tear food packaging film has anti-fogging and antibacterial effects, a consumer can visually see contents, and the visible easy-to-tear food packaging film is uncovered without whitening and residue, smooth in trace and free of damage on the uncovered film surface. The preparation process comprises the following steps that the visible functional film layers and the easy-to-uncover film layer are prepared firstly, then the visible functional film layer is hot-pressed on the upper surface and the lower surface of the finished film layer, and finally a target finished product is obtained. The preparation method has the advantages that preparation operation is simple, and industrial production is easy to achieve.

Description

technical field [0001] The present application relates to the field of food packaging materials, in particular to a visible and easy-to-tear food packaging film and a preparation process thereof. Background technique [0002] Most fresh food has perishable, seasonal and regional characteristics, and the storage and preservation technology of fresh food is relatively lagging behind, which can easily lead to spoilage of fresh food. In addition, the moisture content of fresh food is very high. Traditional packaging materials may produce water vapor due to changes in the external environment temperature or the respiration of fruits and vegetables. This situation will cause fogging on the inner surface of the packaging, which will not only affect the quality of the food, but also easily cause food spoilage. spoiled. Therefore, anti-fog and antibacterial packaging materials for fresh food have become the focus of attention of today's agricultural product processing industry, food...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/06B32B37/06B32B37/10B65D65/40B29C41/26B29C48/08
CPCB32B27/32B32B27/08B32B37/06B32B37/10B65D65/40B29C41/26B29C48/08B32B2250/242B32B2307/7145B32B2553/00
Inventor 柳金亭王斐牛传照
Owner 浙江大汇新材料有限公司
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