envelope paper是什么意思

用法例句

The purpose of the study is to develop tobacco stalk as a new pulping raw material and produce pulp appropriate for making grade A corrugating base paper and Grade A linerboard with the explosion pulping and to produce qualified kraft envelope paper and fine kraft paper.

研究目的是开发烟秆为制浆新原料,采用爆破法制浆,使制出的纸浆性能达到A等瓦楞原纸和A等箱纸板的要求,并研究用这种纸浆生产合格的牛皮信封纸和精制牛皮纸。