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Preparation method of color-printed high-temperature retort pouch

A high-temperature retort pouch and color printing technology, applied in chemical instruments and methods, lamination devices, lamination auxiliary operations, etc., can solve the problems of packaging that cannot be used for boiling and cooking, unstable chlorine atoms, PET and other film printing practicability Unsatisfactory and other problems, to achieve the effect of good air tightness, easy heat sealing, good crack resistance and thermal stability

Inactive Publication Date: 2013-04-24
利辛县宏达铝塑包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, inks commonly used in food packaging bags include chloroacrylic inks and polyurethane inks. Due to the instability of chlorine atoms in the resin, chloroacrylic inks cannot be used on boiled and steamed packaging, and are only suitable for inner printing of BOPP films. , the printing practicability of films such as PET is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Take polyurethane ink, add 1.8wt% hardener of polyurethane ink, stir evenly, and then print on PET film; compound PET film and aluminum foil in a dry compound machine, and the amount of glue applied is 5.0g / m 2 (The glue is a maleic anhydride modified polypropylene suspension adhesive), the temperature of the oven is 70°C, the temperature of the compound roll is 90°C, the compound pressure is 0.45Mpa, the machine speed is 80m / min, and then placed in the curing room, Aging at 55°C for 60 hours; composite PET and aluminum foil composite film with nylon film, and the amount of glue applied is 5.0g / m 2 , the oven temperature is 70°C, the composite roll temperature is 90°C, the composite pressure is 0.45Mpa, the machine speed is 80m / min, and then placed in the curing room, 55°C for 60h; composite with CPP film, the amount of glue is 5.0g / m 2 , the oven temperature is 70°C, the composite roller temperature is 90°C, the composite pressure is 0.45Mpa, the machine speed is 80m...

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Abstract

The invention discloses a preparation method of a color-printed high-temperature retort pouch, which is in a four-layer structure (PET / aluminium foil / nylon / CPP). The method selects polyurethane ink to perform color printing, and a hardening agent added in the ink accounts for 1.5wt%-2.0wt%. The prepared color-printed high-temperature retort pouch is free of decolorization, printed pattern fading, and folds after cooking at 123DEG C for 38min. The color-printed high-temperature retort pouch prepared by the invention has good air tightness, and its appearance, physical and mechanical properties, as well as hygienic performance are all in line with the requirements.

Description

technical field [0001] The invention belongs to the field of food packaging, and in particular relates to a method for preparing a color-printed high-temperature cooking bag. Background technique [0002] High-temperature retort bags are generally divided into high-temperature retort bags at 121°C, high-temperature retort bags at 135°C, and ultra-high temperature short-time retort bags at 145°C. Among them, the most commonly used is the high-temperature retort bag at 121°C, which can meet the needs of most food sterilization and cooking, such as sterilization of beef food at 121°C for 60 minutes, aquatic products and soybean products at 121°C for 10~ 20 minutes of sterilization treatment. [0003] At present, inks commonly used in food packaging bags include chloroacrylic inks and polyurethane inks. Due to the instability of chlorine atoms in the resin, chloroacrylic inks cannot be used on boiled and steamed packaging, and are only suitable for inner printing of BOPP films....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/02B32B37/12B32B38/14B32B1/02
Inventor 王海峰
Owner 利辛县宏达铝塑包装有限公司
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