公开(公告)号：US07067568B1

公开(公告)日：2006-06-27

申请号：US11003250

申请日：2004-12-03

申请人： Pushpito Kumar Ghosh ,  Arup Kumar Siddhanta ,  Kamalesh Prasad ,  Ramavatar Meena ,  Amit Bhattacharya

发明人： Pushpito Kumar Ghosh ,  Arup Kumar Siddhanta ,  Kamalesh Prasad ,  Ramavatar Meena ,  Amit Bhattacharya

IPC分类号： C09J3/215 ,  C09J3/18 ,  C09J11/02 ,  C09J11/08

CPC分类号： C08B37/0042 ,  C08J5/18 ,  C08J2305/00 ,  C08L5/00 ,  C08L5/12 ,  C08L2666/02

摘要： The present invention relates to use of inexpensive semi-refined kappa carrageenan as a seaweed polysaccharide in preparation of tough, biodegradable films exhibiting improved performance over films obtained from refined kappa carrageenan. The formulation requires no gelling salt and the only other essential components of the film are glycerol and water, the former being used as plasticizer as reported in the prior art. The films can be recycled and reprocessed if required. The performance of the films can be further enhanced by incorporating polyvinyl alcohol that lends toughness and clarity as also natural rubber latex that imparts greater elasticity and barrier properties. Films of optimum composition can be pulse heat sealed immediately after casting and used for preparation of soft capsules and pouches. It is possible to store solvents and oils in the pouches. In view of the more eco-friendly processing of semi-refined kappa carrageenan compared to refined kappa carrageenan, films made with the former would also effectively be “greener”.

摘要翻译： 本发明涉及廉价的半精制卡波卡拉胶作为海藻多糖的用途，用于制备韧性可生物降解的膜，其表现出从精制的卡拉卡拉胶获得的薄膜的性能改善。 制剂不需要胶凝盐，膜的唯一其它基本组分是甘油和水，前者被用作现有技术中报道的增塑剂。 如果需要，这些胶片可以回收再利用。 通过加入提供韧性和透明度的聚乙烯醇以及赋予更大弹性和阻隔性能的天然橡胶胶乳，可以进一步提高膜的性能。 最佳组成的膜可以在铸造后立即进行脉冲热封，并用于制备软胶囊和小袋。 可以将溶剂和油储存在袋中。 鉴于与精制卡波卡拉胶相比，半精制卡波卡拉胶更加环保的加工，与前者相比，电影也将更加“绿化”。