JPS5864959A - Oil-resistant packing material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil-resistant packaging material.More specifically, the present invention relates to an oil-resistant packaging material for an oxygen absorber, which is obtained by coating or impregnating an oil repellent on a packaging material for an oxygen absorber. Regarding packaging materials.

Conventionally, as a packaging material for an oxygen absorber, a material made by laminating paper and a breathable polyethylene sheet has been used. However, when oxygen absorbers packaged with such packaging materials are used for foods containing a lot of oil, the paper part of the oxygen absorber's packaging material is impregnated with oil, making it difficult to breathe. In many cases, the oxygen absorber's oxygen absorption was inhibited.

Recently, some papers have been laminated with a breathable transparent film on the outer surface of the paper in order to prevent the absorption of oxygen from being inhibited, but in this case too, it is difficult to avoid oil immersion. Although the penetration decreased, oxygen absorption was still inhibited. Therefore, when using an oxygen absorber to preserve foods that contain a relatively large amount of oil, methods have been used to prevent direct contact between the oxygen absorber and the food.

Recently, porous membranes or non-woven fabrics made of synthetic resin have been used as packaging materials for oxygen absorbers; If the properties of the package were inhibited or if oil seeped into the packaging material, it would become transparent, allowing the contents to be seen through and often impairing the package's appearance.

The present inventors have completed the present invention as a result of conducting various studies on improving packaging materials for oxygen absorbers. In the present invention, there are no particular restrictions on the use of silicone-based or fluorocarbon-based oil repellents. However, considering the influence on processability and air permeability, fluorocarbon-based oil repellents are most suitable. The amount of oil repellent applied or impregnated is, for example, 0.1 to 21 f/- in the case of a fluorocarbon nested oil repellent, and 0,1 f/II.
If it is less than I'', the oil repellency will be poor, and if it exceeds 29/It'', it will be difficult to ensure air permeability as a packaging material for an oxygen absorber, and the cost will also increase, which is not preferable.

There is no particular restriction on the method of applying or impregnating the oil repellent in accordance with the present invention. For example, when the base material of the packaging material is paper, it is possible to add it to the pulp before paper making, or it is possible to add it to the pulp before paper making. It is also possible to apply the oil repellent by dissolving it in a solvent.

In addition, if paper impregnated with oil repellent has poor adhesion to a transparent heat-adhesive film such as polyethylene, the paper and heat-adhesive film may be pasted together before application to the document. is also possible.

Furthermore, if the adhesion of subsequent printing ink is poor when the paper has been treated with oil repellent in advance, then it is possible to print on the paper in advance and then apply an oil repellent.

Furthermore, for materials other than paperboard, such as microporous membranes or nonwoven fabrics, it is possible to apply oil repellents at various stages or to submerge the material.

As mentioned above, by impregnating or coating the packaging material used for oxygen absorbers with an oil repellent, even if the oxygen absorber comes into contact with oily foods that contain a lot of oil, the oil will not seep in. , the oxygen absorption capacity can be suitably used without being affected in any way.

Example A fluorine-based water and oil repellent (
After coating and impregnating the product (product name Asahi Guard AG530) using the size press coating method, it was dried with hot air.〇The coating amount was 0.8 f/d in terms of solid content.□The treated paper was coated with pores of about 0.3■. A packaging material was created by laminating the perforated polyethylene film.

Using the above packaging material, seal the oxygen absorber based on iron powder,
An oxygen absorber packaging bag was created.

The oxygen absorber packaging bag was sealed together with potato chips in a vinylidene chloride coated stretched polypropylene/polyethylene laminate bag (KOP/PR bag), and oil penetration and oxygen concentration inside the bag were monitored.

As a comparative example, tests were also conducted on oxygen absorber packaging bags using untreated packaging materials, and the results are shown in the table.

table

Claims (1)

[Claims] An oil-resistant packaging material for an oxygen absorber, characterized in that the packaging material for an oxygen absorber is coated or impregnated with an oil repellent.