CN1382568A

CN1382568A - Paper making technology

Info

Publication number: CN1382568A
Application number: CN 01117451
Authority: CN
Inventors: 邱圣渊
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-22
Filing date: 2001-04-22
Publication date: 2002-12-04
Anticipated expiration: 2021-04-22
Also published as: CN1179829C

Abstract

A technology for making paper without water and pollution includes physically treating the raw fibrous material to become fibre powder or wool, mixing it with water adhesive and assistant, extruding out or calendering, baking and press polishing. Its advantages no pollution and no need of water.

Description

Papermaking process

The present invention relates to a kind of new papermaking process, it is that raw materials such as straw, wheat straw, bagasse, waste paper, market pulp board are handled by physical method, under dry situation, makes a kind of method of paper and cardboard.

Existing all kinds of paper and cardboard great majority adopt wet production, it is that raw materials such as straw, wheat straw, bagasse, reed, bamboo, timber, cotton, fiber crops, waste paper are processed into paper pulp by the chemical method of a series of complexity or the method for physical method or the two combination, then the cylinder by paper machine or for no reason fourdrinier wire filter slurries and press dewatering forms the paper tire, drying, press polish, volume working procedure processing such as are cut and are made again.This method complex manufacturing, equipment investment is big, and is seriously polluted, administers difficulty, also will consume a large amount of water, electricity, coal, industrial chemicals, manpower, and cost is higher.

Also there is minority to use the dry method of paper-making, it is to adopt the method for physics to be processed into fiber suede bleaching or true qualities market pulp board, form continuous uniform fibers layer again on dry method of paper-making machine, cementation by adhesive forms paper tire drying or is solidified into paper product.Though this method flow process is simple, does not have pollution, do raw material with market pulp board, the cost height, product evenness is poor, and the production kind is restricted.

Purpose of the present invention is exactly will solve the severe contamination problem of above-mentioned traditional papermaking process existence (with the various poisonous and harmful substances that water is discharged, pollutants such as the poisonous waste gas that flavor arranged of discharging in the process, waste residue, dust) and conserve water resource and reduce other raw and auxiliary material and energy resource consumption, reduce production costs.

In order to achieve the above object, the present invention adopt the fibrous raw material that will choose through physical method be processed into fiber powder or fiber suede again with various corresponding aqueous binders and the abundant mixing of other auxiliary agent, under dry situation, make the fibered plaster of mud shape, form the paper tire by the method for extruding and rolling again, drying, press polish become paper product.

This method and traditional papermaking process more not only can be eliminated makes insider and leader at different levels, the severe contamination problems such as waste water,waste gas and industrial residue of the masses' headache of being injured; Also can save great lot of water resources, to a water-deficient area good job especially; Also can save a large amount of timber resources, conserve forests; Reduce production costs; Save the equipment investment of main flow and pollution control.Fibered plaster in this method also can be used for producing paper pulp moulding product and replaces plastic products.

Describe the specific implementation method of this invention in detail below in conjunction with accompanying drawing.

Fig. 1 is the schematic flow sheet of papermaking new method.

1 raw material, 2 fly-cutter type pulverizers, 3 filler bins, 4 adhesive hoppers, 5 auxiliary agent hoppers, 6 double helix cone-type mixers, 7 drain tanks, 8 twin-screw mixing extruders, 9 single screw rod moulding extruders, 10 molding port moulds, 11 4 roller moulding calenders, 12 polyester webs, 13 big drying cylinders, 14 calenders, 15 are coated with material fluid bath, 16 work beams, 17 paper rolls among Fig. 1.

This method raw materials for production are mainly straw, wheat straw, bagasse, rice bran, waste paper, mineral fibres, bleaching and true qualities market pulp board, require general optional wherein 1-3 kind according to product quality.Each processing apparatus selection and technological operation main points are as follows:

Raw material is handled: the various fibrous raw materials of selecting for use 1 should be selected go rotten variable color part and foam, plastics, rubber, metallic hard thing, bamboo wooden unit, the hard foreign material of mineral substance etc., pulverize with 2 series connection of fly-cutter type pulverizer again, do not adorn sieve plate in order to avoid hard thing damage equipment and remove heavy foreign material for first, second hole diameter of sieve (perforated) plate of adorning can be selected between 2-3mm, fiber powder that crushes or fiber suede, it is standby that the air blast of borrowing pulverizer to carry by the cloth bag pipe blows to filler bin 3.If the raw material selected for use is pulverized with two fly-cutter type pulverizers in turn for two or more and output I, also can many to pulverize respectively, the different material powder should separately be stored in a warehouse, so that metering is prepared burden in proportion.Raw material variety and ratio should be determined according to product quality.

The selecting for use and preparing of adhesive and auxiliary agent: the aqueous binder of preparation fibered plaster should be inexpensive, gather materials on the spot and should meet the requirements, can select the 1-3 kind in 106 glue, 107 glue, polyvinyl acetate emulsion, waterglass, industrial gelatine, amylodextrin and other converted starch, flour, styrene-butadiene latex, polyvinyl alcohol, urea-formaldehyde resin or the like for use, and dissolve on request or boil.Also should select auxiliary agents such as emulsifying agent, lubricant, softener, curing agent, sizing agent for use according to actual conditions.After modulating, adhesive and auxiliary agent be stored in adhesive hopper 4 respectively and auxiliary agent hopper 5 is standby.

The preparation of fibered plaster: fiber powder or fiber suede, adhesive, auxiliary agent should determine as the case may be that ratio and metering are added in the adjustable speed double helix cone-type mixer 6, what have can add at the charging aperture of adjustable speed twin-screw mixing extruder 8 according to material properties and actual conditions, in order to make each material mixing better in double helix cone-type mixer 6, the material solid content can hang down, drain tank 7 reuses are extruded excess liquid and deposit at the middle part that enters twin-screw mixing extruder 8, the hardness of extruding the fibered plaster behind the surplus liquid should be beneficial to be extruded and calendaring molding, can not be too hard, can not be too soft, solid content is about between 60～75%.The model of double helix cone-type mixer 6 should be selected according to output, it during mixed material the batch (-type) operation, can alternately mix by two, feed, through twin-screw mixing extruder 8 further mix, the uniform fibers of plasticating mud just can be continuously to single screw rod moulding extruder 9 feed.

Moulding of paper tire and oven dry: the molding port mould 10 of adjustable speed moulding extruder 9 is a slit shape, and fibered plaster width and the thickness extruded should be adjustable, and thickness should be controlled at 1-2mm according to the production description, and vertically enters between preceding two rollers of four roller moulding calenders 11.After the extruding evenly of four roller moulding calenders 11, the paper tire of formation is taken on the big drying cylinder 13 of adjustable speed by polyester webs 12, and is pressed onto on the big drying cylinder 13 by polyester webs 12 and dries by the fire the mass dryness fraction that requires.

Press polish and coating, volume are cut: require to determine whether surface coated that the product that need be coated with is not rolled into paper roll 17 by adjustable speed work beam 16 after 14 press polish of adjustable speed calender according to product quality, cut or the rewinding of cutting edge is finished product again.If need surface coated, but less demanding can carrying out is coated with pressure roller place, the top that material fluid bath 15 is added in calender 14 on calender 14, and dries with infrared drying oven in the calender back.But the machine that quality requirement is high is coated with outward.

The fibered plaster of making in this method also can be produced various paper pulp moulding products, as packing anti-vibration pad, various pallet, dividing plate, firecracker cylinder or the like.

Claims

1, a kind of papermaking new method, producing raw materials used is 1-3 kind in straw, wheat straw, bagasse, waste paper, bleaching and the fibrous raw materials such as true qualities market pulp board, mineral fibres, it is characterized in that: fibrous raw material adopts the method for physics to be processed into the fibered plaster that fiber powder or fiber suede and aqueous binder and auxiliary agent mixing are made the mud shape, again by extrude, calendering process becomes paper tire drying, press polish forms product, and production process water, pollution-free not.

2,, it is characterized in that adopting physical method to be processed into fiber powder or fiber suede fibrous raw material becomes mud shape fibered plaster with aqueous binder and various corresponding additive mixings and copy into paper product again according to the papermaking new method of claim 1.

3, according to the papermaking new method of claim 1, it is characterized by: paper product is that fibered plaster is formed with the oven dry of method formation paper tire, the press polish of extruding and rolling.

4, be applicable to also that according to the fibered plaster production method in the papermaking new method of claim 1 production of paper pulp moulding product and extrusion molding are the production of fiber-like product.