역첨정석 구조를 갖는 은처리 세라믹을 함량을 달리하여 LDPE에 충전시켜, 기체 투과도 조절능과 항균력을 동시에 갖는 기능성 포장필름을 만들고, 이 기능성 필름을 사용할 때 나타날 문제점들을 이것들의 기계적 강도 열안정성 그리고 광투과도 등을 조사하여 검토하였다. 이 기능성 LDPE 필름은 열안정성과 용융지수 모두 세라믹 함량이 변하더라도 거의 변하지 않아 가공이 용이함을 나타내었고, 또한 포장재가 갖추어야할 기본 물성인 항복강도는 세라믹 함량이 증가할수록 감소하였지만, 세라믹이 6%까지 첨가되어도 그 감소정도가 10%이내여서 포장재로써 지녀야할 충분한 강도를 유지하였고, 광투과도는 최대 20%밖에 감소하지 않아서 특별히 투명성이 필요한 경우에만 개선이 필요함을 보여주었다.

Present work examines a functional film containing a ceramic powder whether the film does have enough mechanical strength, thermal stability and light transparency for both of the practical usage and the process of master batch. The film has its functionality inherited from a reverse spinel ceramic known to have functions to prohibit the growth of living microorganisms in the film because of existence of silver coated on it and to control permeability of gaseous components in the film. Since the thermal properties and melt indices of the film were stable and similar for all powder contents, the processing of the master batch has shown to be easy. Besides this, the film conserved the enough yield strength that is the most important property of the mechanical strengths of the packaging films. The reservation of the strength was within 10 percent under 6 percents of the ceramic proportion, though the yield strength had decreased with the increase in the amount of the powders. Since, the reduction of the light transparency showed maximum 20 percent at 6 percent ceramic contents, the film proved to need some improvement in case of particular needs where the transparency is critical.

Packaging Film LDPE Ceramic Powder

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