梁平县肉联厂厂长张鸿飞在繁忙的经营管理工作中,挤出时间开展科研活动,研究设计的盒式冻肉装运纸箱于今年元月荣获国家专利。该纸箱由两片瓦楞纸板折叠而成,不用粘合不用铁钉,易损部位由单层增加到三层,不易烂的顶部和底部由双层,减少为 Zhang Hongfei, director of Liangping County Meat Processing Factory, squeezed time to carry out scientific research activities during his busy management and management. The research and design of boxed frozen meat shipping cartons won national patents in January this year. The carton is folded from two pieces of corrugated cardboard without adhesive nails. The vulnerable parts are increased from a single layer to three layers. The top and bottom are not easy to be rotten and are reduced to two layers.