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Food fresh-keeping packaging bag and manufacturing method thereof

A food preservation and packaging bag technology, applied in the field of packaging bags, can solve the problems of large preservation time and inability to meet long-term preservation

Inactive Publication Date: 2011-12-14
扬州科信包装印刷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Preservation of pickled vegetables is a relatively difficult problem to solve. Due to the structure of the bag and the relatively large gap between materials, the existing food preservation packaging bags only have a preservation time of about one month, a shelf life of eight months, and a crispness of about one month. , can not meet the long-term preservation

Method used

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  • Food fresh-keeping packaging bag and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0020] A method for manufacturing the food fresh-keeping packaging bag, comprising the steps of:

[0021] 1) Composite high-barrier layer, apply the high-barrier material PVDC on the nylon film layer, form a high-barrier layer after drying, the drying temperature is 65°C, and wind the composite film into a roll;

[0022] 2) Print patterns, print patterns on the high barrier layer, dry the ink at a temperature of 55°C, and wind the ink into rolls after drying;

[0023] 3) Composite polyethylene film layer, apply polyurethane glue on the high barrier layer with a glue roller, dry at a temperature of 65 ℃, extrude and compound through an extrusion roller, wind it into a roll, put it into a curing room at 50 After curing for 48 hours at ℃, cool naturally;

[0024] 4) Make food preservation packaging bags on the bag making machine.

Embodiment 2

[0026] A method for manufacturing the food fresh-keeping packaging bag, comprising the steps of:

[0027] 1) Composite high-barrier layer, apply the high-barrier material PVDC on the nylon film layer, form a high-barrier layer after drying, the drying temperature is 70°C, and wind the composite film into a roll;

[0028] 2) Print patterns, print patterns on the high barrier layer, dry the ink at a temperature of 70°C, and wind the ink into rolls after drying;

[0029] 3) Composite polyethylene film layer, apply polyurethane glue on the high barrier layer with a glue roller, dry at a temperature of 70°C, extrude and compound through an extrusion roller, wind it into a roll, put it into a curing room at 70°C After curing for 48 hours at ℃, cool naturally;

[0030] 4) Make food preservation packaging bags on the bag making machine.

Embodiment 3

[0032] A method for manufacturing the food fresh-keeping packaging bag, comprising the steps of:

[0033] 1) Composite high-barrier layer, apply the high-barrier material PVDC on the nylon film layer, form a high-barrier layer after drying, the drying temperature is 68°C, and wind the composite film into a roll;

[0034] 2) Print patterns, print patterns on the high barrier layer, dry the ink at a temperature of 63°C, and wind the ink into rolls after drying;

[0035] 3) Composite polyethylene film layer, apply polyurethane glue on the high barrier layer with a glue roller, dry at a temperature of 68°C, extrude and compound through an extrusion roller, wind it into a roll, put it into a curing room at 60°C After curing for 48 hours at ℃, cool naturally;

[0036] 4) Make food preservation packaging bags on the bag making machine.

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PUM

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Abstract

The invention discloses a food fresh-keeping packaging bag. The food preservation packaging bag includes a polyethylene film layer, a printing layer and a nylon film layer from the inside to the outside, a high barrier layer is arranged between the polyethylene film layer and the nylon film layer, and a high barrier layer is arranged between the high barrier layer A printing layer is provided. The food fresh-keeping packaging bag adopting this technical scheme, the high barrier layer can effectively keep the fresh molecules of pickled vegetables from leaking out, so that the freshness of pickled vegetables can be preserved for 3 to 6 months, and the crispness can be kept for 3 months. extended to 12 months. The invention also discloses a method for manufacturing the food fresh-keeping packaging bag. The method comprises the steps of compounding a high barrier layer, printing patterns, compounding a polyethylene film layer, and making a machine bag. The method is scientific and reasonable, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a packaging bag, in particular to a food fresh-keeping packaging bag. Background technique [0002] Food preservation packaging bags are used to extend the shelf life of food while maintaining the freshness of food. Preservation of pickled vegetables is a relatively difficult problem to solve. Due to the structure of the bag and the relatively large gap between materials, the existing food preservation packaging bags only have a preservation time of about one month, a shelf life of eight months, and a crispness of about one month. , can not meet the long-term preservation. Contents of the invention [0003] Purpose of the invention: the purpose of the present invention is to address the deficiencies in the prior art, to provide a food preservation packaging bag with a long fresh-keeping time, a long shelf life, and a long crispness retention time; another purpose of the present invention is to provide a method for manufactur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/34B32B27/30B65D65/40
Inventor 陆新楠
Owner 扬州科信包装印刷有限公司
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