The invention discloses a low quantitative
coating type food
package raw paper, and a preparation method thereof. The preparation method comprises following steps: firstly, cationic
starch is added into a PCC suspension solution, uniform mixing is carried out, then gelatinization is carried out so as to form a partically-crosslinked gel substance, and normal temperature cooling and dispersion treatment are carried out so as to obtain a
starch coated PCC filling material; bleached
sulfate softwood pulp, and bleached
sulfate hardwood pulp are subjected to mixing pulping, the
starch coated PCC filling material, a
wet strength agent, a
sizing agent, and a
retention agent are added, and concentration adjusting,
slag removing, and sieving are carried out so as to obtain a
slurry for wet loadingpaper making; the
slurry is subjected to fourdrinier
dehydration moulding and squeezing, and pre-
drying; and at last, paper surface glue applying, soft calendaring, and rolling are carried out to obtain a finished product. According to the preparation method, no expensive
titanium dioxide is adopted as a filling material, production cost is low, the
retention rate of the filling material and finefiber is high, environment
pollution caused by
white water discharge is reduced, the obtained paper is uniform,
full width tightness is constant, paper surfaces are flat and fine,
surface strength andwet tensile strength are high, and
water based coating quality requirements are satisfied.