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Method of manufacturing gloss paper
| Details |
Inventors: Saji, Soichi; Nakabai, Tatsuya; Nakamura, Teruo;
Assignee: Kanzaki Paper Mfg. Co., Ltd. (Tokyo, JP)
Primary Examiner: Chin; Peter
Assistant Examiner:
Attorney, Agent or Firm: Flynn, Thiel, Boutell & Tanis
A method of manufacturing gloss coated paper by applying a coating composition containing a pigment and an adhesive on base paper. The pigment contains 5 to 40% by weight of satin white with an average particle diameter of 0.8 .mu.m or below and an organic pigment with an average particle diameter of 0.1 to 1.0 .mu.m and a glass transition point (Tg) of 40.degree. C. or above. The weight ratio of the satin white to the organic pigment is from 0.2/1 to 5/1. The coating composition provides a coated paper with excellent gloss and smoothness. |
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DETAILED DESCRIPTION What is claimed is: 1.
A method of manufacturing gloss coated paper comprising the steps of: coating a composition comprising a pigment and an adhesive on a base paper; drying said coated base paper; and finishing said dried, coated paper, said pigment comprising 5 to 40% by weight of satin white particles and particles of an organic pigment, said satin white particles having an average particle diameter of 0.
1 to 0.
8 microns and said organic pigment particles having an average particle diameter of 0.
1 to 1.
0 microns and a glass transition point (Tg) of 40.
degree.
C.
or higher, said satin white being contained in said pigment in a weight ratio of 0.
2/1 to 5/1 with respect to said organic pigment.
2.
A method of manufacturing gloss coated paper according to claim 1, wherein said finishing comprises supplying said dried, coated paper through a nip consisting of a metal roll heated to at least 100.
degree.
C.
and an elastic roll.
3.
A method of manufacturing gloss coated paper according to claim 1, wherein the average particle diameter of the satin white is 0.
3 microns and the average particle size of the organic pigment is 0.
5 microns.
4.
A method of manufacturing gloss coated paper according to claim 1, wherein the average particle diameter of the satin white is 0.
5 microns and the average particle size of the organic pigment is 0.
25 microns.
Description:
FIELD OF THE INVENTION This invention relates to the manufacture of gloss paper and, more particularly, to a method of manufacturing gloss paper having excellent smoothness, gloss and visual gloss by using as a pigment a composition containing satin white and an organic pigment.
DESCRIPTION OF THE PRIOR ART Recently, there has been an increasing demand for improving the gloss, visual gloss and smoothness of the coated surface of coated paper, particularly for printing, to meet a trend for visualization of print, color printing and high quality printing.
In fact, various processes of manufacturing coated paper for printing have been proposed
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