SU1217965A1 - Stock for backing paper for facing materials imitating wood grain - Google Patents

Description

one

The invention relates to the composition of paper pulp and may be used in the manufacture of a scientific research institute of a base paper of a decorative layer of composite structural and finishing and facing materials imitating valuable wood species and used in industrial and civil construction, in the manufacture of transport equipment and furniture.

The purpose of the invention is to improve the quality of the paper by increasing its air permeability, impregnability and smoothness.

Achieving this goal is based on using a combination of certain types of fibrous semi-finished products and light-resistant white and color pigments.

The proposed pulp is prepared as follows.

Grinding of bleached and refined coniferous h refined hardwood pulp is produced jointly at a concentration of 3% in a disk and conic mill to 23-30 llIP, and hardwood bleached pulp is in a disc or conical mill to 20-22 ShR, after which the pulp enters ground pulp.

Suspensions of individual mineral pigments are prepared in a 20 m hydraulic pulper. The pulpers are pre-filled with a certain amount of water, which is calculated depending on the suspension concentration in the range of 150-300 g / l, after which, with the stirrer switched on, the pigments are loaded through the receiving hopper from the hopper supplied container.

 To improve the dispersion of the ligments, steam heating is provided for steam to 20-80 ° C. Stirring in the pulper is carried out for 30-60 minutes.

The prepared suspensions are transferred in a container for storing pigment suspensions with constant stirring. A suspension of organic black pigment B is prepared in a tank equipped with a stirrer. Four-pigment slurry is prepared alternately in 50 m pools with measuring tanks.

651

Before the beginning of each development, if necessary, the composition of the mixture is refined, taking into account deviations in the color of pigments.

The suspension of the combined pigment is mixed for 20-30 minutes, then a sample is taken to make a sample of the color, compared to the standard, after which, if necessary, the color of the combined pigment is adjusted. While in one composition the containers are made up and adjusted, the composition of the pigments is supplied from the other through a vibrating screen into a mixer for preparing paper pulp, where ground pulp is also fed. From the mixer, the paper pulp enters the composite basin, to which an aqueous solution of polyamidoamine epichlorohydrin resin is added. .

Example I. To prepare paper pulp, coniferous cellulose is kneaded together with refined hardwood pulp on a laboratory centrifugal apparatus up to 26 SHR. On the same machine grind hardwood bleached pulp to.

The ground composition is a fibrous composition of a given composition.

For dyeing the fibrous mass, a mixture of pygmyites of the following composition is prepared, wt%:

Titanium dioxide 7.0 Pigment yellow glands O-J

oxide 46.0 Pigment red iron oxide46.5

Pigment black, 5 To prepare a mixture of pigments, aqueous suspensions of individual mineral pigments with a concentration of 200 g / l are prepared by dispersing the pygmyetes in water heated to a laboratory stirrer.

A four-pigment mixture is prepared by mixing calculated volumes.

suspensions of individual pigments are thoroughly mixed, after which they are metered into the ground pulp, to which an aqueous solution of polyamidoamine epichlorohydrin resin is also added.

ten

15

25

The resulting paper pulp has the following composition, wt.%: Sulphite henbenerated softwood pulp (mass fraction from (-cellulose 92.5%) 8

Sulfate henbane foliated cellulose OB-1, GOST 4940-752A

Sulfate henbane coniferous cellulose grade AC-1I,

GOST 9571-7920

Sulphate henbane. refined deciduous cellulose (mass fraction of d -cellulose 92.0%) 8

A mixture of color and white pi, gmentov. 38

Polyamidoamine-epichlorohydrin

resin2

Paper production is carried out on an abstraction sheet-cutting apparatus, and alendration is done on the calender of the experimental plant.

The paper quality indicators from the paper mass according to Example I are shown in the table.

EXAMPLE 2. The preparation of fiber 35 and a mass of pigments is carried out according to Example 1.

The mixture of pigments has the following, wt.%:

Titanium dioxide 86.2 40 Pigment yellow iron oxide 12.3 Pigment red iron oxide 1.4 Pigment black B 0.1 45 The resulting paper pulp has the following compound, May.%; Sulfite henbane refined

conifer pulp50

(mass fraction of С | (.- cellulose 92%)

20

Grades АС-11, GOST 9571-79 18 Sulphate henbane refined leafy cellulose (mass fraction of d. -cellulose 91.8%) 6 Mixture of color and white pigments 20.5 Polyamide raminepichlorhydrin resin0 5

Received oak finish paper.

The quality indicators of paper from paper pulp in example 2 are shown in the table.

PRI me R 3. Preparation of fibrous mass and pigments is carried out according to Example 1.

A mixture of pigments of the following composition is prepared, wt.%:

five

56.77

38.5

4.48 0.25

Titanium Dioxide Pigment Yellow Iron Oxide

Pigment is red iron oxide. Pigment. Black The resulting paper pulp has the following composition, wt1 .-%: Sulfite henbone refined softwood pulp (mass fraction of c-cellulose 92.0%) 16.7 Sulfate henbane hardwood pulp brand OB-1, GOST 4940- 75 23.9 Sulfate henbane coniferous cellulose, grade AC-II,

GOST 9571-7919,9

Sulphate henben refined deciduous cellulose (mass, share of cellulose 90.0.%) 6.6 A mixture of white and colored pigments31,4.

Polyamidoamine-epichlorohydrin resin1.5

Got a walnut finish paper.

The quality indicators of paper from the bulk mass in example 3 are given in the table.

Example 4. The preparation of the volatile mass and pigments is carried out according to Example I.

A mixture of pigments with a compound composition, wt.%, Is prepared:

Titanium dioxide 56.77 Pigment yellow iron oxide 38.0 Pigment red iron oxide 4.48 Pigment black B 0.75 - The resulting paper mass has the following composition, wt%: Sulfite henbane refined

Double cellulose 2.5 Sulfate bleached foliated cellulose OB-1, GOST 4940-75 32.5 Sulfate bleached softwood pulp AC-11, GOST 9571-7932,5

Sulphate henbers refined deciduous cellulose (mass fraction of d. -Cellulose 90%) 4 A mixture of colored and white pigments 18

Polyamidoamide epichlorohydrin and resin, 0.5 The quality parameters of paper from paper pulp in example 4 are presented in the table.

And pimet 5, the preparation of the volatile mass and pigments is carried out according to Example 1.

A mixture of pigments of the following composition is prepared, wt%:,. Titanium dioxide 89.5 Pigment yellow ferrous oxide 9.0

Iron oxide red pigment 1,4 1b1gr black BO, I The resulting paper pulp has the following composition, wt%: Sulfite henbene enriched coniferous cellulose

five

(mass fraction of d-cellulose 91%) 3.5

Sulfate henbane 5 foliated cellulose OB-1,

GOST 4940-7521

Sulfate henbane conifer cellulose vine brand AC-11,

GOST 9571-7942

Sulfate henbane ennobled dietary cellulose5. vine (mass fraction of ot-cellulose 92%) 3.5 Mixture of colored and white pigments29 Polyamido amiaepichlorohydrin resin1,

The quality indicators of paper from paper pulp in example 5 are presented in the table.

From the data of the table it follows that the introduction of the components in the composition of the pulp in the ratios given in examples 1-3 provides an increase in the air permeability for paper

 weighing 130 g / m from 400-450 to 600- 690 MP / min, accelerating the impregnation of paper from 60-70 to 35-38 s, reducing the acidity of the paper (the pH of the aqueous extract rises to 6.3-6.6) improved smoothness from 12-15 to 16-17 s. With this, a wider assortment of paper is achieved by color.

These properties allow you to meet the requirements of furniture

0 industries to improve the impregnation of paper with amino aldehyde resins and printing properties, to expand the range of color, but also to use paper for the manufacture of not only

5 sheet, but also rolled decorative films, which make it possible to reduce the cost of finishing in the furniture industry.

The use of the invention also makes it possible to reduce the paper mass capacity from 130 to 100 g / m, while maintaining high quality indicators, including covering power. A decrease in the content of refined cellulose in the paper pulp according to Example 4 m and 5 leads to a sharp deterioration in the impregnation parameters — fH (increase in the impregnation time to

50-60 s) and smoothness (up to 15 s), as well as a decrease in the air permeability of paper to 455-460 ml / min for paper weighing 130 g / m. An increase in the content of black pigment B in s dye mixture in Example 4, and also paper quality indicators in paper pulp composition

Weight 1 m% g

Breathability, wi / s n

130

130

130 102 132 128 100 129

No more than 450 400

690 800 650 600 700 460

with

At least 15

12

17 G9

60

70

35 27

Bufon Kras- Von

new wood

The background is light. The background is a nut red oak oak tree in a consistent pattern.

pH of the aqueous extract 4.5

5.0 6: 6 6: 6 6.3 6.6 6.6

VNIIPI Order 1088/35, Circulation 355 Subscription Fshal POP Patent, Uzhgorod, ul. Project, 4

However, a decrease in the content of yellow pigment with a corresponding increase in the content of titanium dioxide (winner 5) does not allow obtaining the color of Zumagi corresponding to samples of furniture industry.

130

455

16 16 18

15

15

38 38 31.

50

65

Color does not match agreed patterns.

6.4

Claims (1)

1. PAPER MASS FOR THE PRODUCTION OF PAPER BASIS FOR FACING MATERIALS SIMULATING VALUABLE BREEDS OF WOOD, containing a mixture of sulphate bleached softwood and hardwood pulp, a mixture of colored and white pigments, hardening additive and coagulating paper, which improves the quality, which improves breathability, saturability and smoothness, it additionally contains sulphite bleached ennobled softwood pulp and sulphate bleached ennobled hardwood pulp, and as a reinforcing add wki and coagulant - polyamidoamineepichlorohydrin resin in the following ratio of components, May.%: I Sulphate bleached softwood pulp 18-20 Sulphate White deciduous lulose 23-24 Sulphite white naya ennobled softwood pulp ' 8-32 Sulphate White naya ennobled hardwood pulp 6-8 Polyamidoamineepichloro- hydrin gum 0.5-2.0 A mixture of ~ color and white ^ pigments 20.5-38.0 2. The mass according to claim 1, about t l and h a The aim is to ensure that, with the possibility of obtaining a variety of colors of the base paper, the mass contains a mixture of the following pigments, May. % Rutile titanium dioxide tetragonal system with a spherical particle shape of 7.0-86.2 Pigment red iron oxide, representing iron oxide d. -forms Pigment yellow. iron oxide, which is a crystalline monohydrate of iron oxide d-form Organic pigment black 0.1-0.5; and .. „1217965 12.3-46.5