新素材と紙の新しい用途

Abstract

This paper which modifies the presentation at 1986 Annual Meeting of Fiber Science and Technology in May 12-15 sponcerd by The Society of Fiber Science and Technology, Japan, is over viewed the contributions of new papermaking science by developed and underdeveloped advanced materials.The paper has mainly several view points as follows;1. Functionarity of paper is now going to change from purpose of printing, packaging and wiping, so called three mainly uses of paper, to more high technological applications such as micro filtration of paper, medical paper or electro-magnetic shielding paper.2. Paper is a multilayer structure of fibers with numerous microscale pores. However, pore size of paper made by wood pulp fibers is limited because the width of natural cellulose fiber is almost 20-40 microns.In order to controlles the filtration properties of structures, ultra fine thread of glass fibers, rayon fibers, synthetic fibers and other functional fibers has been applied to industrial market. These filters are now utilizing to electronics fields, medical packaging and heat exchangers.3. Many kinds of carbon fibers, metal fibers and metal coated synthetic fibers areintroducing to improve the electro conductivity, electric insulating and electro-magnetic wave shielding.4. Cellulose wadding containing super absobent polymer made by starch, cellulose and synthetic resins are supplying for bed pads, insert and adult diapers as well as packaging materials.