METHOD FOR PREPARING MACHINE-MADE WATER-SOLUBLE POLYVINYL ALCOHOL NONWOVEN FABRIC SHOPPING BAG

摘要

Disclosed is a method for preparing a machine-made water-soluble polyvinyl alcohol nonwoven fabric shopping bag. The preparation method specifically involves: (1) preparing a sizing finishing agent, wherein the sizing finishing agent comprises the following raw material components, in parts by weight: 10-20 parts of polyvinyl alcohol; 3-8 parts of a polyol copolymer polyether; 1-3 parts of a polyacrylamide hydrolysate; 2-5 parts of a polyol; 1-3 parts of an inorganic filler; 1-3 parts of urea; 0.1-0.3 part of a wetting agent; 0.2-0.5 part of an imidazolidinyl urea; 0.1-0.3 part of a p-hydroxybenzoate; and 100 parts of water; and these components are mixed to prepare the sizing finishing agent; (2) applying the sizing finishing agent to padding finishing and coating finishing processes for a polyvinyl alcohol nonwoven fabric; and (3) subjecting the polyvinyl alcohol nonwoven fabric, which has been padded or coated and sized, to mechanized automatic hot-seal bagmaking to obtain the shopping bag. The shopping bag provided by the present invention has excellent heat sealability and mechanical properties and a good hand feeling. By means of the method, the processing efficiency is improved, and the production cost is reduced.