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A fragrance trapping agent applied to retort-resistant adhesives for flexible packaging

A capture agent, polyurethane adhesive technology, applied in the direction of adhesives, non-polymer adhesive additives, adhesive types, etc., can solve the problems of accelerating ethyl maltol, bonding failure of composite film bags, etc.

Active Publication Date: 2018-11-30
重庆聚特新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phenolic hydroxyl group in the structure of ethyl maltol has a certain weak acidity, and it is also a small molecular compound. High temperature and high pressure can accelerate the contact of ethyl maltol through the inner packaging film or into the adhesive layer, thereby triggering the degradation of the adhesive , eventually leading to the bonding failure of the composite film bag
Therefore, the traditional retort-resistant adhesives no longer have good adhesion to the packaging bags containing ethyl maltol as the content of artificial flavors. Such harsh conditions pose new challenges to adhesives for food packaging

Method used

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  • A fragrance trapping agent applied to retort-resistant adhesives for flexible packaging
  • A fragrance trapping agent applied to retort-resistant adhesives for flexible packaging
  • A fragrance trapping agent applied to retort-resistant adhesives for flexible packaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh polyester polyol with a molecular weight of 20,000 according to the measurement in Table 1, add ferric chloride in proportion, stir evenly at room temperature, and prepare glue with curing agent and ethyl acetate in proportion.

[0017] Table 1 glue ratio

[0018]

[0019] After preparing the glue solution, carry out lamination on the machine respectively. The structure of the lamination film is PET (12μm) / Al (7μm) / RCPP (70μm), and the amount of glue on the PET / Al layer is 2.8g / m 2 -3.2g / m 2 , the amount of glue on the Al / RCPP layer is 3.0g / m 2 -4.8g / m 2 ;After the samples were composited off the machine, they were cured in an oven at 50°C for 72 hours. After the curing was completed, two groups of control films were taken to make packaging bags. Each group made at least 4 bags, the size was 10cm×8cm, and the contents were produced in Guangdong. The infinite spicy chicken wings of , its total mass is 60g. Cook at 135°C for 45 minutes. After cooking, take on...

Embodiment 2

[0024] Weigh polyester polyol with a molecular weight of 8000 according to the measurement in Table 3, add iron powder in proportion, stir evenly at room temperature, and prepare glue with curing agent and ethyl acetate in proportion.

[0025] Table 3 glue ratio

[0026]

[0027] After preparing the glue solution, carry out lamination on the machine respectively. The structure of the lamination film is PET (12μm) / Al (7μm) / RCPP (70μm), and the amount of glue on the PET / Al layer is 2.8g / m 2 -3.2g / m 2 , the amount of glue on the Al / RCPP layer is 3.0g / m 2 -4.8g / m 2 ;After the samples were composited off the machine, they were cured in an oven at 50°C for 72 hours. After the curing was completed, two groups of control films were taken to make packaging bags. Each group made at least 4 bags, the size was 10cm×8cm, and the contents were produced in Guangdong. The infinite spicy chicken wings of , its total mass is 60g. Cook at 135°C for 45 minutes. After cooking, take one kind...

Embodiment 3

[0032] Weigh ethylene glycol according to the measurement in Table 5, add ferrous chloride in proportion, stir evenly at room temperature, and prepare glue with curing agent and ethyl acetate in proportion.

[0033] Table 5 glue ratio

[0034]

[0035] After preparing the glue solution, carry out lamination on the machine respectively. The structure of the lamination film is PET (12μm) / Al (7μm) / RCPP (70μm), and the amount of glue on the PET / Al layer is 2.8g / m 2 -3.2g / m 2 , the amount of glue on the Al / RCPP layer is 3.0g / m 2 -4.8g / m 2 ;After the samples were composited off the machine, they were cured in an oven at 50°C for 72 hours. After the curing was completed, two groups of control films were taken to make packaging bags. Each group made at least 4 bags, the size was 10cm×8cm, and the contents were produced in Guangdong. The infinite spicy chicken wings of , its total mass is 60g. Cook at 135°C for 45 minutes. After cooking, take one kind of packaging bag to test th...

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Abstract

The invention belongs to the field of adhesives, and relates to an essence trapping agent applied to a flexible package steaming-resistant adhesive. By using the principle that iron or iron compounds and essence ethyl maltol can form stable complexes through coordinated complexation, ethyl maltol permeating into an adhesive layer can be coordinated, acidity of the coordinated ethyl maltol disappears, damage to the adhesive by ethyl maltol is eliminated, and adhesion to a packaging bag by the adhesive is ensured.

Description

technical field [0001] The invention belongs to the field of adhesives and relates to an essence trapping agent applied to retort-resistant adhesives for flexible packaging. Background technique [0002] In recent years, the market demand for high-temperature retort-resistant adhesives has been increasing. The retort-resistant composite film flexible packaging has high requirements on the retort performance of polyurethane adhesives because of the harsh use conditions. Researchers have designed the structure of adhesives for retort-resistant processing conditions, making more and more adhesives suitable for retort packaging bags. However, there are still some packaging bags containing spicy food that are delaminated under high-temperature cooking. Instrumental analysis of the contents of such delamination bags found that most of these contents contained a certain amount of ethyl maltol. In order to increase its own flavor, many soft-packaged foods often need to add an app...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J11/06C09J175/04
Inventor 陈宇张群于昊宇许弟王竹李家臻崔正张春辉李明
Owner 重庆聚特新材料有限公司