CN1035641C - Wet technology for making zinc oxide printing plate paper - Google Patents
Wet technology for making zinc oxide printing plate paper Download PDFInfo
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- CN1035641C CN1035641C CN 92106095 CN92106095A CN1035641C CN 1035641 C CN1035641 C CN 1035641C CN 92106095 CN92106095 CN 92106095 CN 92106095 A CN92106095 A CN 92106095A CN 1035641 C CN1035641 C CN 1035641C
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- coated
- coating
- paper
- zinc oxide
- water
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Abstract
The present invention relates to a technique for manufacturing zinc oxide printing plate paper in a wet process, which comprises six procedures. Coating for precoating, coating for coating on the back of the paper and zinc oxide coating are respectively composed of ethanol, polyvinyl butyral and pigment; water, polyvinyl alcohol and sodium chloride; zinc oxide, acrylic varnish, butylacetate and pigment. Coating layers are coated by a coating machine (knife coating); in the procedure of wet treatment, water is coated on the back of a paper base by a water roller after a zinc oxide coating layer is dried, and the printing plate paper contains 1.5 to 5 percent of water; in the procedure of cutting and packing, the paper is cut, checked and packed according to a required specification; in the procedure of solvent recovery, the gas of solvent discharged from a drying chamber is recovered by condensing, and the solvent is recycled after separation. The product quality of the present invention is superior to a national trade standard ZBN47011-90.
Description
The invention belongs to zinc oxide electrostatic offset printing manufacturing technology field.
The zinc oxide electrostatic offset plate paper that existing market is sold mostly is dry production.Its immersion expansion and contraction, image density, resolution, bite, offset printing serviceable life etc. every index all undesirable.Production is limited by season humidity, the product that is used to make a plate, and can only produce a season every year.The producer that abroad has adopts wet manufacturing process, but complex process, cost is higher.
The objective of the invention is, a kind of wet technology for making of zinc oxide electrostatic offset plate paper is provided.
The present invention is a paper substrate with take pictures body paper or static body paper, manufacturing process as shown in drawings, be coated with by giving, carry on the back be coated with, zinc paste is coated with, wet process, cut the packing and solvent recovery six procedures form.Now be described below:
One, gives and being coated with
1. form and give the raw material that is coated with
Ethanol
Polyvinyl butyral
Pigment (doing sign uses)
2. technical formula (weight ratio)
Ethanol (content is more than 95%) 30
Polyvinyl butyral 0.9～1.8
Pigment an amount of (be generally ethanol heavy 30,000/)
3. key points for operation
Under continuous stirring condition, to need the polyvinyl butyral of quantity slowly to add in the ethanol of requirement by technical formula, soak after 2～12 hours under constantly stirring and be heated (directly, indirect heating all can) to 50～70 ℃, when solute dissolves fully, stop heating, and then reduce to normal temperature.Be added to an amount of pigment (as malachite green) in the solution and constantly and stir this moment, and it is dissolved fully equably.Above-mentioned solution is crossed 80～200 mesh sieves, and solution is and gives coating under the sieve.
To give coating with coating machine and be coated in the paper substrate front, with 0.3～0.8 millimeter steel wire spiral scraper blade coating.3～6 meters/minute of paper substrate gait of march enter hothouse and carry out drying under 120～80 ℃ of temperature.To surpass broadside with bead cutter before being coated with and cut away giving.
Two, the back of the body is coated with
1. the raw material of forming back paint
Water
Polyvinyl alcohol (PVA) (or oxidized starch)
Sodium chloride
2. technical formula (weight ratio)
Water 25～35
Polyvinyl alcohol (PVA) 0.25 or with the oxidized starch of identical weight
Sodium chloride 0.5～1.5
3. key points for operation
Polyvinyl alcohol (PVA) is immersed in the water and boils by technical formula, till solution is transparent with being steam heated to.Then solution is reduced to normal temperature.Water dissolves sodium chloride.Above-mentioned two kinds of solution are mixed be back paint.With coating machine back paint is applied to the paper substrate back side, with glass tube scraper blade coating.7～8 meters/minute of paper substrate gait of march enter hothouse and carry out drying under 80～120 ℃ of temperature.
Three, zinc paste is coated with
1. the raw material of forming zinc oxide coating
Zinc paste
Acrylic lacquer (154 resins or front three resin)
Acetate butyl (or dimethylbenzene)
Pigment (containing Yihong, bromjophenol blue, bromcresol purple, rhodamine B)
2. technical formula (weight ratio)
Zinc paste 100
Acrylic lacquer (154 resin) 23.3～33.3 or identical weight front three resin
Acetate butyl (or dimethylbenzene) 100～150
Pigment 0.2～0.3
Yihong in the pigment, bromjophenol blue, bromcresol purple and rhodamine B, weight ratio therebetween is 3: 2: 1, rhodamine B is an amount of, or 2: 4: 1, rhodamine B is an amount of.
3, key points for operation
By technical formula above-mentioned raw materials is mixed pack into colloid mill or ball and waste that reseating disperseed 1～2 hour in the machine, cross 300～360 mesh sieves, be zinc oxide coating.With coating machine zinc oxide coating is coated in above the paper substrate precoat, with 1.0～1.4 millimeters steel wire spiral scraper blade coatings, the paper substrate gait of march is 3～7 meters/minute, enters hothouse and carry out drying under 70～90 ℃ of temperature.
(coating weight of each coating is exceeded to smoothen no blank.) this is conspicuous to present technique field those of ordinary skill.
Four, wet process
Be lower than 60% as the production station air humidity, the product that is used to make a plate must carry out wet process.The way of handling is, after the Zinc oxide coating drying before the rolling water through roller coat above the coating of the paper back of the body, the water cut of paper will be controlled at 1.5～5%.Also can be coated with in the process and carry out wet process with steam spray at zinc paste.
Five, cut packing
Zinc oxide printing plate paper through wet process is cut with single cutter is disconnected, and placing dull and stereotyped guillotine to be cut into again needs specification, checks packing.
Six, solvent recovery
Gases such as the ethanol of discharging from the hothouse gas exhaust piping, butyl acetate reclaim through condensation, recycle after the separation.
With the zinc oxide electrostatic gelatine printing paper that the technology of the present invention is made, quality reaches national sector standard ZBN47011-90 fully.Its smoothness, immersion expansion and contraction, image density, resolution, level, bite, defective and offset printing serviceable life (offset printing surpasses ten thousand times) index all are better than national sector standard in the effective picture size.
The present invention is raw materials used, mostly is Organic Chemicals, and is homemade.Polyvinyl alcohol (PVA) (Beijing Wei Nilun factory product), polyvinyl alcohol (PVA) contract butyl ester (chemical experimental factory, Tianjin product), front three resin (Dalian Paint Factory product), 154 resins (Shanghai Paint Factory's product), pigment (Shanghai reagent three factories product), butyl acetate, ethanol (Dalian winery product), all there is sale in chemical industry shop, various places.
Advantage of the present invention is, flow process is short, process stabilizing, and used chemicals is easily purchased, the product quality height, and the yield height, cost is lower, and economic benefit is obvious.
Accompanying drawing is a technological process schematic block diagram of the present invention
Explanation by technological process shown in the drawings and instructions the 5th part is made, and can implement the present invention.
Claims (1)
1, a kind of wet technology for making of zinc oxide printing plate paper is a paper substrate with take pictures body paper or static body paper, manufacturing process is coated with by giving, carry on the back be coated with, zinc paste is coated with, cut packaging process forms, and it is characterized in that having wet process and solvent recovery operation,
Give being coated with, the weight ratio of each component is in the technical formula,
Ethanol 30
Polyvinyl butyral 0.9～1.8
Pigment be generally in right amount ethanol heavy 30,000/
Giving the key points for operation that are coated with is, under constantly stirring, polyvinyl butyral added lentamente and soak 2～12 hours in the ethanol, be heated to 50～70 ℃ then, dissolve fully until solute, make solution reduce to normal temperature afterwards, this moment is with pigment---and malachite green adds in the solution and constantly stirs, and solution is crossed 80～200 mesh sieves, be under the sieve and give coating
To give coating with coating machine and be coated in the paper substrate front, and use 0.3～0.8 millimeter steel wire spiral scraper blade coating, 3～6 meters/minute of paper substrate gait of march enter hothouse and carry out drying under 80～120 ℃ of temperature, give will surpassing broadside with bead cutter before being coated with and cutting away,
The back of the body is coated with, the weight ratio of each component in the technical formula,
Water 25～35
Polyvinyl alcohol (PVA) 0.25 or with the oxidized starch of identical weight
Sodium chloride 0.5～1.5
Carrying on the back the key points for operation that are coated with is, polyvinyl alcohol (PVA) is immersed in the water also boils with being steam heated to, and till solution is transparent, solution is reduced to normal temperature, and water dissolves sodium chloride, above-mentioned two kinds of solution are mixed be back paint,
With coating machine back paint is applied to the paper substrate back side, uses glass tube scraper blade coating, 7～8 meters/minute of paper substrate gait of march enter the hothouse baking temperature at 80～120 ℃,
Zinc paste is coated with, zinc oxide coating component weight ratio,
Zinc paste 100
Front three resin or 154 resins 23.3～33.3
Butyl acetate or dimethylbenzene 100～150
Pigment 0.2～0.3
Yihong in the pigment, bromjophenol blue, bromcresol purple and rhodamine B, weight ratio therebetween is 3: 2: 1, rhodamine B is an amount of, or 2: 4: 1, rhodamine B is an amount of
The key points for operation that zinc paste is coated with are, raw material is mixed pack into colloid mill or the ball of being uniformly dispersed waste to grind in the machine and disperseed 1～2 hour, cross 300～360 mesh sieves, are zinc oxide coating under the sieve,
With coating machine zinc oxide coating is coated in above the precoat of paper positive group front, uses 1.0～1.4 millimeters steel wire spiral scraper blade coatings, the paper substrate gait of march is 3～7 meters/minute, and it is dry under 70～90 ℃ of temperature to enter hothouse,
Wet process, the production station air humidity is lower than at 60% o'clock, the zinc oxide printing plate paper that is used to make a plate will carry out wet process, the way of handling is, after the Zinc oxide coating drying, water is coated on the coating of the paper back of the body by damping roller before the rolling, the water cut of paper will be controlled at 1.5～5%, also can be coated with in the process at zinc paste and carry out wet process with steam spray
Cut packing, cut with single cutter is disconnected through the zinc oxide printing plate paper of wet process, placing dull and stereotyped guillotine to be cut into again needs specification, checks packing,
Solvent recovery, the ethanol of discharging from the hothouse gas outlet, butyl acetate gas reclaims through condensation, recycles after the separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106095 CN1035641C (en) | 1992-03-14 | 1992-03-14 | Wet technology for making zinc oxide printing plate paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92106095 CN1035641C (en) | 1992-03-14 | 1992-03-14 | Wet technology for making zinc oxide printing plate paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1064120A CN1064120A (en) | 1992-09-02 |
| CN1035641C true CN1035641C (en) | 1997-08-13 |
Family
ID=4941789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92106095 Expired - Fee Related CN1035641C (en) | 1992-03-14 | 1992-03-14 | Wet technology for making zinc oxide printing plate paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1035641C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106042703B (en) * | 2016-05-13 | 2019-04-02 | 营口特种纸业有限公司 | A kind of polypropylene film offset plate and its manufacturing method |
| CN109518525A (en) * | 2017-09-20 | 2019-03-26 | 中国制浆造纸研究院有限公司 | A kind of water-soluble zinc oxide offset plate paper and its manufacturing method |
-
1992
- 1992-03-14 CN CN 92106095 patent/CN1035641C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1064120A (en) | 1992-09-02 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |