Method for using polyester fiber for enhancing highly-filled environment-friendly paper

Abstract

The invention provides a method for using polyester fiber for enhancing highly-filled environment-friendly paper. The method is characterized in that 20-25 parts of high-density polyethylene, 0.5-2 parts of the polyester fiber and 0.2-0.8 part of octadecyl carbamic acid polyester polyol are added into an internal mixer, internally mixed to the temperature of 150 DEG C and kept for 20 minutes at the constant temperature, 75-80 parts of calcium carbonate, 0.3-1 part of 1, 4-butanediol, 0.2-0.6 part of lithium stearate and 0.05-0.3 part of antioxidant 1010 are added into the internal mixer, internal mixing is carried out continuously till the temperature reaches 160 DEG C, and the constant temperature is kept for 20 minutes; then materials internally mixed are fed into an extruding machine, and an extruded melt is fed into a calendaring machine through a T-type die head, and rolled into sheets at the temperature of 140 DEG C to 160 DEG C; the sheets coming out of the calendaring machine are fed into cold water to be cooled to below 5 DEG C, and then the surfaces of the sheets are dried through a blower; the sheets with the dried surfaces are fed into a multi-roller stretcher, preheated to 110 DEG C to 130 DEG C in the stretcher, and stretched through two to five sets of stretching rollers to obtain the environment-friendly paper with enhanced modification.

Description

technical field [0001] The invention relates to a method for reinforcing high-filling environment-friendly paper with polyester fiber. Background technique [0002] Environmentally friendly synthetic paper has a history of more than 30 years of development in foreign countries. With the strengthening of global environmental protection awareness, the development of synthetic paper has been accelerated due to the large amount of pollution caused by ordinary wood fiber paper. The scope of application of environmentally friendly synthetic paper. In the past, synthetic paper used high molecular polymer as the main raw material, calcium carbonate as the auxiliary raw material, and the calcium carbonate content was less than 40%, so not only the cost was relatively high, but also it was dependent on petroleum, and its development was limited to a certain extent. Recently, this technology has been greatly developed. Calcium carbonate is the main raw material, with a content of up t...

AI Technical Summary

Problems solved by technology

In order to increase the strength of traditional paper, thick paper and plastic film are generally used, which will inevitably lead to waste of resources, increased costs, and troublesome recycling.

At present, the production methods of environmentally friendly paper are mainly calendering method and blown film method. The calendering method has a stable process and simple control, and can produce thick paper of 200-400 μm, but the disadvantage is that there is a large difference in longitudinal and lateral strength. The longitudinal strength is large and the transverse strength is small. It is easy to tear; while the blown film method has poor process stability, difficult control, high cost, and immature technology, but the advantage is that the difference in vertical and horizontal strength is small, and thin paper of 100-200 μm can be produced; the present invention adopts the method of adding polyester to environmentally friendly paper Fiber, use polyester fiber to improve the strength of environmentally friendly paper, and improve the poor longitudinal and transverse strength of calendered environmentally friendly paper; since the surface of polyester fiber contains a large number of hydroxyl groups with strong polarity, while high-density polyethylene has weak polarity, the combination of the two Poor force and poor compatibility, in order to improve the bonding force between polyester fiber and high-density polyethylene