CN102242521B

CN102242521B - Method for preparing pulp by gramineous straw and use of obtained pulp

Info

Publication number: CN102242521B
Application number: CN 201110168284
Authority: CN
Inventors: 陈集双; 覃佐东
Original assignee: Nanjing Biofunction Biological Science & Technology Co Ltd
Current assignee: Nanjing Biofunction Biological Science & Technology Co ltd
Priority date: 2011-06-22
Filing date: 2011-06-22
Publication date: 2013-07-10
Anticipated expiration: 2031-06-22
Also published as: CN102242521A

Abstract

The invention discloses a method for preparing pulp by gramineous straw. The method sequentially comprises the following steps: (1) pre-treating the gramineous straw as a raw material; (2) physically pulping to obtain a straw fiber reinforced polymer (FRP); (3) adding water to the straw FRP obtained in step (2), thread-rolling and grinding until length of the straw FRP is 10-20mm to obtain fiber pulp; (4) decoloring or coloring the fiber pulp; and (5) mixing the fiber pulp treated in step (4) with the conventional chemical pulp or waste pulp based on the dry weight ratio of 1:0.1-10, then adding water for diluting the obtained mixed pulp, and finally obtaining the mixed pulp raw material. The invention further discloses use of the obtained pulp in preparation of the pulp molding product. The pulp obtained by the method takes the waste crop-the gramineous straw as the raw material and has the characteristics of low raw material cost, wide use, good industrial application prospect and the like.

Description

Utilize the grass family stalk to prepare the method for paper pulp and the purposes of gained paper pulp

Technical field

The invention belongs to biological technical field, relate to the method that a kind of stalk that utilizes grasses such as crops and ornamental plant prepares novel paper pulp and paper pulp moulding product, especially a kind of mechanical pulp-making method that utilizes carries out the method that its fiber production paper pulp mold product was handled and utilized to physics and chemistry to gramineous crop and sibling species stalk thereof.

Background technology

Agricultural crop straw is the crops residue afterwards of harvesting.China is as large agricultural country, and the kind of crops is many, and quantity is also bigger.According to statistics, the annual agricultural crop straw output of China reaches more than 800,000,000 tons.So many crop material has only about 30% to be utilized.In recent years, along with development of rural economy, the agricultural crop straw output cumulative year after year of China, average annual growth rate reaches more than 2.33%.Zhejiang Province's grain yield was 814.7 ten thousand tons in 2005, output of oil-bearing crop is 50.1 ten thousand tons, output of cotton is 2.2 ten thousand tons, sugar crop output is 900,000 tons, its stalk ratio grain, oil, cotton, sugar An not calculate in 1: 1,1: 1.5,1: 4.5,1: 1.5, and the annual stalk total amount of the whole province can reach 1034.75 ten thousand tons.In China, according to incompletely statistics, the agricultural crop straw annual production wherein has 15.0% approximately more than 800,000,000 tons, and namely 0.91 hundred million ton stalk is used to direct returning to farmland and makes fertilizer; Have 25.0%, namely 1.51 hundred million tons stalk is used as feed; About 9.0%, namely 0.54 hundred million ton stalk is used as the raw material of industry.In addition, then be discarded in the field more than 60% or directly incinerate in the field, not only wasted resource, also seriously polluted environment, increased the discharging of greenhouse gases.Whole nation statistics, the stalk loss of burning every year is equivalent to 6,000 ten thousand tons of humus, the nitrogen, phosphorus, the potassium fertilizer output that also are equivalent to the whole nation 60%, and government is annual to carry out the stalk comprehensive utilization and prohibits burning control, invest more than one hundred million units, set out large quantities of manpower and materials and forbidden crop straw burning, though obtained certain effect, but not solving the stalk pollution yet at all and utilizing problem, its main cause is not find a cost-effective approach that utilizes to stalk.

Simultaneously, along with the quickening of China's Development of China's Urbanization, the urban green space area continues to increase, and the discarded object that lawn care produces also begins to become one of chief city's rubbish, because landfill causes the waste of a large amount of manpowers and land resource.Fail to take full advantage of these living beings, then cause CO ₂The concentrated discharging of isothermal chamber gas and other environmental pollutions.

Along with the deep development of economic globalization, the global economy system forms, and consumer's environmental consciousness of Qiang Huaing is just affecting exploitation and the development of all types of industries produce market and correlated product thereof with irresistible trend day by day.China is the Eleventh Five-Year Plan period just with the comprehensive utilization of the solid waste emphasis as agricultural and industrial development.The living beings moulding article that utilizes based on straw industrialization is towards industrial and agricultural products packing, the consignment of goods and industrial use etc.; meet the environmental protection demand for development; being the best substitute of Traditional Packing goods such as (EPE, PS and PVP), is the ideal path of following green package sustainable development.Current, nearly 5,000 hundred million dollars of the sales volume of global packaging market, producing renewable, recyclable, degradable " green package " alternative packaging product in the market is the inexorable trend that develops.Therefore, strengthen the utilization of existing various discarded stalk resources has been become the epoch demand of industrial and agricultural production and packaging market development.

The paper mould industry is mainly used the slurry of two major types, the one, pure bamboo pulp, cane syrup and wood pulp etc., the 2nd, old and useless newspaper and waste and old carton etc. at present.As everyone knows, along with the consumption of the forest reserves, countries in the world further promote the protection of the forest reserves, and forest conservation becomes various countries' cardinal task, and magma prices such as wood pulp and bamboo pulp linearly rise; Raw-material prices such as old and useless newspaper, waste and old carton and relevant leftover pieces are also by about 600 yuan per ton in 2000, increase to about 2000 yuan per ton, the prices of raw and semifnished materials have been turned over 3 times more than, this shows that raw material have become the big problem of restriction paper mould industry development.

Therefore, also there are many researchs and patent to relate to the new purposes of above material both at home and abroad.For example, in disclosed technology at present, patent documentation CN1412389 discloses " molding string production technology ", this method is the method for string and the compound Production and Packaging articles for use of renewable binder, and the string of mainly having set forth low concentration, low thickness mixes the technology that slurry carries out processing.This method mainly is to trend towards the process introduction that low-consistency fiber is utilized.Patent documentation CN1273204 discloses " packing material with liner of stalk (or straw) fibres and production technology ", mainly introduce stalk and worn into method and the technology of powder and the compound production liner of other material, but whether utilize the pulp property after stalk divides silk, the decolouring and the modification that also do not relate to the paper pulp feature are handled.Disclose among the patent documentation CN1184161C " environment protection type flame-retarding decorative plate and preparation method thereof ", this method provides a kind of environment friendly decoration board and preparation method thereof, but this method is to add conventional flame retardants in dry process, add glutinous paste then and do the adhesive extrusion forming, technology relative complex and not being applied on the wet processing.

Summary of the invention

The purposes that it is gained paper pulp that the technical problem to be solved in the present invention provides a kind of method of utilizing the grass family stalk to prepare paper pulp; The present invention is with discarded crops--and-grass family stalk has advantages such as cost of material is cheap, product purpose extensive, the industrial applications prospect is good as raw material.

In order to solve the problems of the technologies described above, the invention provides a kind of method of utilizing the grass family stalk to prepare paper pulp, as raw material, carry out following steps with the grass family stalk successively:

1), pretreatment of raw material

When raw material is fresh grass family stalk, raw material is cut into the stalk section that length is 1～30cm; Get the fresh straw section;

During grass family stalk after raw material is dry the processing, earlier raw material is cut into the stalk section that length is 1～30cm, and then to put into water temperature be that 60～90 ℃ hot water or mass concentration are 5～30% aqueous slkali immersion treatment 10～50 minutes, must handle the back stalk section;

2), physics slurrying:

The fresh straw section of step 1) gained is carried out mechanical jordaning and thread rolling; Length until the stalk fibre muscle of gained is 30～50mm;

Carrying out mechanical jordaning and thread rolling after perhaps adding water in the stalk section after processing, is 0.5～50mm until the length of the stalk fibre muscle of gained, the consumption of described water be in the step 1) the stalk dry weight 1%～5%;

3), in step 2) add the further thread rolling of the laggard row of water in the stalk fibre muscle of gained and grind after, be 10～20mm until the length of stalk fibre muscle, get fiber pulp; The consumption of described water be in the step 1) the stalk section dry weight 5%～10%;

4), decolouring or painted:

Described decolouring is:

The adding mass concentration is 0.1～2% lime solution or KOH solution or NaOH solution or H in above-mentioned fiber pulp ₂O ₂The solution decolouring, bleaching time is 30～100 minutes; Drainage drained 30～60min minute again, must handle the back fiber pulp; Lime solution or KOH solution or NaOH solution or H ₂O ₂The volume ratio of solution and fiber pulp is 2～10%;

Perhaps fed ozone treatment 60-90 minute in above-mentioned fiber pulp, the ozone that per hour needs in the fiber pulp per ton to feed is 8～15g; Must handle the back fiber pulp;

Thereby realize decolouring, bleaching and softening the processing;

Described being colored as:

In the fiber pulp of step 3) gained, add dyestuff, the consumption of dyestuff be in the step 1) the stalk section dry weight 2%～10%, (preferred 5%), must handle the back fiber pulp, thereby make the stalk fibre muscle have particular color;

5), mechanical pulp mixes with chemical pulp

After the processing of step 4) gained fiber pulp and conventional chemical slurry or secondary stock according to 1: 0.1～10 dry weight than mixing; Must be as the mixing slurry of paper pulp raw material.

As the improvement that utilizes the grass family stalk to prepare the method for paper pulp of the present invention: the grass family stalk is the stalk of wheat, barley, paddy rice, reed, corn or Chinese sorghum.

As the further improvements in methods of utilizing the grass family stalk to prepare paper pulp of the present invention: in the step 1) raw material cut into the stalk section that length is 4～9cm.

As the further improvements in methods of utilizing the grass family stalk to prepare paper pulp of the present invention: step 5) is: the processing rear slurry of step 4) gained and conventional chemical slurry or secondary stock according to 1: 0.5～4 dry weight than mixing.

As the further improvements in methods of utilizing the grass family stalk to prepare paper pulp of the present invention: the conventional chemical slurry in the step 5) is cane syrup, former wood-pulp board or former bamboo pulp; Secondary stock is waste paper limit, waste paperboard or the disregard message slurries that get made of paper.

As the further improvements in methods of utilizing the grass family stalk to prepare paper pulp of the present invention: for the preparation of paper pulp moulding product.

Can utilize kneading or grinding leaser, high dense silk machine, fiberizer, double disc refiner, double helix fiberizer or other physics pulping equipments of dividing that the stalk section of cutting gained is carried out mechanical jordaning and thread rolling in the present invention.

The stalk fibre muscle of gained of the present invention is examined under a microscope: contain 5～350 fibrocytes in the stalk fibre muscle.

The paper pulp of gained of the present invention can prepare paper pulp moulding product in accordance with the following methods, and concrete steps are as follows:

1) slurrying

With pulp crushing apparatus the paper pulp of grass family stalk preparation is fully smashed, according to 1: 0.1～10 or 1: 0 dry weight ratio mix, preferred dry weight ratio is 1: 0.5～4, thin up and sizing mixing then stirs and evenly mixs and making beating makes mixed serum.

2) moulding

Performance requirement according to paper pulp moulding technology and required product, in mixed serum, add various chemical assistants, select hot pressing or Wet-pressing molding method to remove most of moisture respectively by product category then, filtering molding, thus obtain paper pulp moulding product through hot pressing oven dry integer.For different paper pulp moulding products dry respectively or dry naturally, air-dry drying, to form the paper matrix product possess a fixed structure and shape required to reach product thereby carry out the hot pressing integer in case of necessity again.

3) moulding

3.1) hot-forming: at pressurization 30～2500kg/cm ²Under 120～300 ℃ of conditions of temperature, obtain the product embryo by hot-press molding method, obtain paper pulp moulding product through online oven dry.

3.2) Wet-pressing molding: at 0.5～5.0kg/cm ³Under the condition, through pressure filtration molding, drying tunnel line or natural air drying drying, hot pressing integer obtain relevant layered product.

Above-mentioned chemical assistant comprises dry strength agent, wet strength agent, glidant, filter aid, defoamer, preservative agent, sizing agent, waterproofing agent and fire retardant etc.

The paper pulp moulding product of gained of the present invention comprises decorative wall panels, the holder of egg box egg, fruit pallet, medical pallet, food and industrial packaging goods etc.

The grass family stalk does not have noxious pollutants such as the entrained heavy metal of secondary stock, pathogenic microorganisms and printing ink as being the slurry that utilizes first.Simultaneously, its fiber is long, intensity is high.Prove through experimental study, this class raw fiber mixes back production paper pulp moulding product and has better stiffness and fastness and other advantage with other chemical sizwe, the innovation and creation of this technology are that new opportunity to develop is created in the development of following paper mould industry, and for can not efficiently utilizing biomass resources such as stalk to find new practicable approach for a long time.

And show according to present prior art, do not occur that a large amount of crops (and other species of grass family) such as straw fibre resources are carried out high flux comprehensive process processing and make the required new material of industrial production, extensive such raw material of comprehensive utilization forms new material and becomes the method for moulding article with the chemical pulp hybrid process is great innovation of the present invention, and this technology has good commercial application prospect.

Beneficial effect of the present invention is: utilize grass stalk and nearly edge biological species thereof to be rich in characteristics such as fiber, with its recycling, form the new raw material of industry, realize turning bane into boon.Simultaneously, provide than conventional chemical paper pulp to have the more novel raw material of high strength and high tenacity, the paper pulp moulding product that obtains has bigger intensity and stiffness.Utilize the pulping process of this method not cause chemical contamination, because only stalk need be prepared into the multi-cell fiber muscle, rather than single fibrocyte, thereby energy consumption is also relatively low.

The specific embodiment

The present invention is further described to exemplify embodiment below, but content not thereby limiting the invention.

Embodiment 1, utilize the grass family stalk to prepare the method for paper pulp, carry out following steps successively:

1), pretreatment of raw material:

The rice straw of doing is cut into the stalk section that length is 4～9cm with cutting machine, with hot water (temperature is 80 ℃) immersion treatment 30min; Must handle the back stalk section.

2), physics slurrying: carry out mechanical jordaning and thread rolling to handling the back stalk section with kneading or grinding leaser, concrete process conditions are as follows: add the water that accounts for rice straw dry weight 5% in the step 1) in the stalk section and enter kneading or grinding leaser and carry out levigate after processing, the kneading or grinding leaser of 50kw is handled 5～10min, must grow is the stalk fibre muscle of 30～50mm, and microscopically is observed: contain 30～45 cells in this stalk fibre muscle.

3), with step 2) the stalk fibre muscle of gained with the further thread rolling of middle-density refiner, grind, concrete process conditions are as follows: add the water that accounts for rice straw dry weight 8% in the step 1) at the stalk fibre muscle, levigate processing 4-5min in the middle-density refiner of 80kw, this moment, the length of stalk fibre muscle was 15～20mm, got fiber pulp.

4), the decolouring of paper pulp: add mass concentration in the above-mentioned fiber pulp and be 2% NaOH solution decolouring and handle 30min, the volume ratio of NaOH solution and fiber pulp is 5%; Drainage drained 50～60min minute again, must handle back fiber pulp (being the rice straw fiber).

5), mechanical pulp mixes with chemical pulp

Fiber pulp and waste and old cardboard add beater according to 1: 2 dry weight than mixing the back after the processing of step 4) gained, add water and (handle back fiber pulp and waste and old cardboard dry weight sum: the weight sum of fiber pulp, waste and old cardboard and water after handling=3: 97) dredge slurry 30min, beating degree is 55SR, must mix slurry.

6), above-mentioned mixed slurry is changed over to add in the prescription pond account for the FT-556 waterproofing agent that mixed slurry gross weight 4% Hangzhou long-range chemical assistant factory produces and to account for ZR-BB01 fire retardant that mixed slurry gross weight 7% Hangzhou long-range chemical assistant factory produces stir (agitator that changes with per minute 10 stirs) 6min after, slurry after stirring is put into pulp storage tank, get composite slurry.

7) with drum pulper composite slurry being prepared, again becomes pulpboard (routine techniques), and the gained pulpboard is wide 1.2 meters, thick 3-8 millimeter, and after testing: moisture content is lower than 10%, and dry back is as market pulp plate or raw materials for production.Gained mixes also directly processing of slurry.

The preparation of example 1, paper pulp moulding product

1) slurrying: the pulpboard of above-described embodiment 1 gained and water are added the water mixing according to 1: 3 dry weight than (being that the dry weight of pulpboard and the weight ratio of water are 1: 3), above-mentioned paper pulp is put into pulp storage tank, convert the water dilution again, and with after the even stirring of the agitator of 10r/min, get slurries; Add water dilution, the pulping concentration of sizing mixing is 3%, and namely the dry weight of described paper pulp accounts for 3% of slurry weight.

2) moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 2.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base is transferred to shaping and drying in the hot-die of this make-up machine, the upper and lower mould of hot pressing is at 100Kg/cm ³The effect of hot pressing mold clamping force under carry out hot pressing, the moisture content in the wet base is siphoned away by the vacuum of hot pressing counterdie after vaporizing; The control of hot pressing patrix temperature is at 120 ℃ ± 2 ℃, and hot pressing counterdie temperature is controlled at 160 ℃, and total hot pressing time is 30-45s, gets goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, quality inspection, packing warehouse-in.This embodiment mould therefor size is 50 * 50cm, and the plate body thickness of fiber wallboard is 9mm; Concavo-convex height is 5mm.The stereo concave-convex pattern can change according to mould, and this patent example design is the ball pattern, but is not limited to this pattern.The compression strength of this fiber wallboard is 〉=200N that its plane tensile strength is 0.78Mpa; Plate body density 0.68g/cm ³

4), packing of product warehouse-in: according to the specific requirement of client to product, carry out packaging and warehousing.

Contrast experiment 1-1: step 1)～4 among the cancellation embodiment 1), namely the mixed slurry of step 5) all is made up of waste and old cardboard, and the content of step 6) is identical, and the preparation of whole paper pulp moulding product is also fully with example 1.The compression strength of gained fiber wallboard is 〉=80N that its plane tensile strength is 0.40Mpa; Plate body density 0.39g/cm ³

Contrast experiment 1-2: the waste and old cardboard in the step 5) among the cancellation embodiment 1, namely mixed slurry is all fibrous by rice straw, and the content of step 6) is identical, and the preparation of whole paper pulp moulding product is also fully with example 1.Moulding has great difficulty, can't obtain desirable moulded paper pulp product.

Embodiment 2, utilize wheat straw to prepare the method for paper pulp, carry out following steps successively:

1), pretreatment of raw material:

Fresh wheat straw is cut into the stalk section that length is 4～9cm with cutting machine, get the fresh straw section.

2), physics slurrying: with kneading or grinding leaser the fresh straw section is carried out mechanical jordaning and thread rolling, the kneading or grinding leaser of 50kw is handled 5～10min, and must grow is the stalk fibre muscle of 30～40mm, and microscopically is observed: contain 15～30 cells in this stalk fibre muscle.

3), with step 2) the stalk fibre muscle of gained with the further thread rolling of middle-density refiner, grind, concrete process conditions are as follows: add the water that accounts for wheat straw dry weight 10% in the step 1) at the stalk fibre muscle, levigate processing 4-5min in the middle-density refiner of 80kw, this moment, the length of stalk fibre muscle was 15～20mm, got fiber pulp.

4), the decolouring of paper pulp: add mass concentration in the above-mentioned fiber pulp and be 0.5% H ₂O ₂Solution soaks 45min, H ₂O ₂The volume ratio of solution and fiber pulp is 6%; Drainage drained 50～60min minute again, must handle the back fiber pulp.

5), mechanical pulp mixes with chemical pulp

Fiber pulp and waste and old cardboard add beater according to 1: 5 dry weight than mixing the back after the processing of step 4) gained, add water and (handle back fiber pulp and waste and old cardboard dry weight sum: the weight sum of fiber pulp, waste and old cardboard and water after handling=3: 97) dredge slurry 45min, beating degree is 45SR, must mix slurry.

7) with drum pulper composite slurry being prepared, again becomes pulpboard, and the gained pulpboard is wide 1.2 meters, thick 3-8 millimeter, and after testing: moisture content is lower than 10%, and dry back is as market pulp plate or raw materials for production.Gained mixes also directly processing of slurry.

The preparation of example 2, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 5 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution again, and with after the even stirring of the agitator of 12r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 4.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.With above-mentioned wet base natural air drying, get goods.

3), shaping, side cut and letter sorting finished product: behind the natural air drying, compressed air blows to goods on the conveyer belt, delivers to the side cutter cuts burr again, last quality inspection, packing warehouse-in.The fruit pallet mould that this embodiment mould therefor size is 60 * 20cm, fruit pallet thickness is 4mm; Concavo-convex height is 6mm.The stereo concave-convex pattern can change according to mould, and this patent example design is the fruit pallet, but is not limited to this pattern.The compression strength of this fiber wallboard is 〉=100N that its plane tensile strength is 0.45Mpa; Fruit pallet density 0.35g/cm ³

Embodiment 3, utilize the grass family stalk to prepare the method for paper pulp, carry out following steps successively:

1), pretreatment of raw material:

The reed rod of doing is cut into the stalk section that length is 4～9cm with cutting machine, is that 10% Ca (OH) 2 solution soak and softened 0.5 hour with mass concentration; Must handle the back stalk section.

2), physics slurrying: carry out mechanical jordaning and thread rolling to handling the back stalk section with kneading or grinding leaser, concrete process conditions are as follows: add the water that accounts for reed rod dry weight 5% in the step 1) in the stalk section and enter kneading or grinding leaser and carry out levigate after processing, the kneading or grinding leaser of 50kw is handled 5～10min, must grow is the stalk fibre muscle of 30～50mm, and microscopically is observed: contain 30～45 cells in this stalk fibre muscle.

3), with step 2) the stalk fibre muscle of gained with the further thread rolling of middle-density refiner, grind, concrete process conditions are as follows: add the water that accounts for reed rod dry weight 8% in the step 1) at the stalk fibre muscle, levigate processing 4-5min in the middle-density refiner of 80kw, this moment, the length of stalk fibre muscle was 15～20mm, got fiber pulp.

4), the decolouring of paper pulp: add mass concentration in the above-mentioned fiber pulp and be 2% NaOH solution and soak 30min, the volume ratio of NaOH solution and fiber pulp is 5%; Drainage drained 50～60min minute again, must handle the back fiber pulp.

5), mechanical pulp mixes with chemical pulp

The preparation of example 3, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 3 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 20r/min, get slurries; The dry weight of described paper pulp accounts for 0.3% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 3.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base is transferred to shaping and drying in the hot-die of this make-up machine, the upper and lower mould of hot pressing is at 500Kg/cm ³The effect of hot pressing mold clamping force under carry out hot pressing, the moisture content in the wet base is siphoned away by the vacuum of hot pressing counterdie after vaporizing; The control of hot pressing patrix temperature is at 120 ℃ ± 2 ℃, and hot pressing counterdie temperature is controlled at 200 ℃, and total hot pressing time is 30s, gets goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor is the egg box, and the thickness of egg box is 3mm.The stereo concave-convex pattern can change according to mould, and example design of the present invention is 15 pieces of egg box patterns, but is not limited to this pattern.The compression strength of this egg box is 〉=100N.

Embodiment 4, utilize the grass family stalk to prepare the method for paper pulp,

The mechanical pulp of step 5) mixed with chemical pulp makes following content into:

To be 90% former wood pulp add beater according to 1: 1 dry weight than mixing the back for fiber pulp and dry weight after the processing of step 4) gained, add water and (handle back fiber pulp and former wood pulp dry weight sum: the weight sum of fiber pulp, former wood pulp and water after handling=3: 97) dredge slurry 30min, beating degree is 55SR, must mix slurry.

All the other are with embodiment 1.

The preparation of example 4, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 3 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 45r/min, get slurries; The dry weight of described paper pulp accounts for 0.3% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 1.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base is transferred to shaping and drying in the hot-die of this make-up machine, the upper and lower mould of hot pressing is at 60Kg/cm ³The effect of hot pressing mold clamping force under carry out hot pressing, the moisture content in the wet base is siphoned away by the vacuum of hot pressing counterdie after vaporizing; The control of hot pressing patrix temperature is at 120 ℃ ± 2 ℃, and hot pressing counterdie temperature is controlled at 140 ℃, and total hot pressing time is 45s, gets goods.

3) shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor size is 50 * 50cm, and the plate body thickness of fiber wallboard is 9mm; Concavo-convex height is 5mm.The stereo concave-convex pattern can change according to mould, and this patent example design is ball knot pattern, but is not limited to this pattern.The compression strength of this fiber wallboard is 〉=200N that its plane tensile strength is 0.68Mpa; Plate body density 0.58g/cm ³

Embodiment 5, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the rice straw among the embodiment 1 into the barley straw; All the other are with embodiment 1.

The preparation of example 5, paper pulp moulding product:

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 4 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 35r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 3.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.With above-mentioned wet base natural air drying, get goods.

3), shaping, side cut and letter sorting finished product: behind the natural air drying, compressed air blows to goods on the conveyer belt, delivers to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor is industrial packaging goods such as the external packing of this computer, and its thickness is 4mm; Concavo-convex height is 6mm.The stereo concave-convex pattern can change according to mould, and this patent example design is computer external packing pattern, but is not limited to this pattern.

Embodiment 6, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the fresh wheat straw among the embodiment 2 into fresh reed straw; All the other are with embodiment 2.

The preparation of example 6, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 8 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 20r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 1.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base is transferred to shaping and drying in the hot-die of this make-up machine, the upper and lower mould of hot pressing is at 30Kg/cm ³The effect of hot pressing mold clamping force under carry out hot pressing, the moisture content in the wet base is siphoned away by the vacuum of hot pressing counterdie after vaporizing; The control of hot pressing patrix temperature is at 120 ℃ ± 2 ℃, and hot pressing counterdie temperature is controlled at 120 ℃, and total hot pressing time is 45s, gets goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor is the service plate mould.The stereo concave-convex pattern can change according to mould, and this patent example design is disposable circular pattern, but is not limited to this pattern.

Embodiment 7, utilize the grass family stalk to prepare the method for paper pulp,

1), pretreatment of raw material:

The barley straw of doing is cut into the stalk section that length is 4～9cm with cutting machine, with hot water (temperature is 70 ℃) immersion treatment 50min; Must handle the back stalk section.

2), physics slurrying: carry out mechanical jordaning and thread rolling to handling the back stalk section with kneading or grinding leaser, concrete process conditions are as follows: add the water that accounts for barley straw dry weight 3% in the step 1) in the stalk section and enter kneading or grinding leaser and carry out levigate after processing, the kneading or grinding leaser of 50kw is handled 5～10min, must grow is the stalk fibre muscle of 30～50mm, and microscopically is observed: contain 30～45 cells in this stalk fibre muscle.

3), with step 2) the stalk fibre muscle of gained with the further thread rolling of middle-density refiner, grind, concrete process conditions are as follows: add the water that accounts for barley straw dry weight 5% in the step 1) at the stalk fibre muscle, levigate processing 4-5min in the middle-density refiner of 80kw, this moment, the length of stalk fibre muscle was 15～20mm, got fiber pulp.

4), the decolouring of paper pulp: fed ozone treatment 60-70 minute in above-mentioned fiber pulp, the ozone that per hour needs in the fiber pulp per ton to feed is 8～9g; Must handle the back fiber pulp.

5), mechanical pulp mixes with chemical pulp

The preparation of example 7, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 4 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 15r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 0.5Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base is transferred to shaping and drying in the hot-die of this make-up machine, the upper and lower mould of hot pressing is at 30Kg/cm ³The effect of hot pressing mold clamping force under carry out hot pressing, the moisture content in the wet base is siphoned away by the vacuum of hot pressing counterdie after vaporizing; The control of hot pressing patrix temperature is at 120 ℃ ± 2 ℃, and hot pressing counterdie temperature is controlled at 120 ℃, and total hot pressing time is 25s, gets goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor medical treatment pallet; Concavo-convex height is 8mm.The stereo concave-convex pattern can change according to mould, and this patent example design is medical pallet, but is not limited to this pattern.The compression strength of this medical pallet is 〉=150N that its plane tensile strength is 0.48Mpa; Plate body density 0.38g/cm ³

Embodiment 8, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the rice straw among the embodiment 1 into corn stalk; All the other are with embodiment 1.

The preparation of example 8, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 7 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 20r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 4.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Enter drying tunnel oven dry, get final product goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor size is the logistics tray of 110 * 100cm.The stereo concave-convex pattern can change according to mould, and this patent example design is the logistics tray pattern, but is not limited to this pattern.

Embodiment 9, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the rice straw among the embodiment 1 into the oat straw; All the other are with embodiment 1.

The preparation of example 9, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 8 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 10r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 5.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base is transferred to shaping and drying in the hot-die of this make-up machine, the upper and lower mould of hot pressing is at 150Kg/cm ³The effect of hot pressing mold clamping force under carry out hot pressing, the moisture content in the wet base is siphoned away by the vacuum of hot pressing counterdie after vaporizing; The control of hot pressing patrix temperature is at 120 ℃ ± 2 ℃, and hot pressing counterdie temperature is controlled at 280 ℃, and total hot pressing time is 10s, gets goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor size is 50 * 50cm, and the plate body thickness of fiber wallboard is 9mm; Concavo-convex height is 5mm.The stereo concave-convex pattern can change according to mould, and this patent example design is ball knot pattern, but is not limited to this pattern.The compression strength of this fiber wallboard is 〉=200N that its plane tensile strength is 0.78Mpa; Plate body density 0.68g/cm ³

Embodiment 10, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the rice straw among the embodiment 1 into the Chinese sorghum straw; All the other are with embodiment 1.

The preparation of example 10, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 5 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 120r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 0.5Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.With above-mentioned wet base natural air drying, get goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor is 50 * 50cm lawn board mold; Concavo-convex height is 5mm.The stereo concave-convex pattern can change according to mould, and this patent example design is lawn plate pattern, but is not limited to this pattern.

Embodiment 11, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the rice straw among the embodiment 1 into the rye grass straw; All the other are with embodiment 1.

The preparation of example 11, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 6 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 90r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 2.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base is dried naturally, get goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor size is the hypocarp mould of 80 * 50cm; Concavo-convex height is 6mm.The stereo concave-convex pattern can change according to mould, and this patent example design is the hypocarp pattern, but is not limited to this pattern.

Embodiment 12, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the fresh wheat straw among the embodiment 2 into fresh paddy stalk; All the other are with embodiment 2.

The preparation of example 12, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 4 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 45r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight, in slurries, once add waterproofing agent (account for slurries dry weight 2%) and reinforcing agent (account for slurries dry weight 1%) and wet strength agent (account for slurries dry weight 0.5%), waterproofing agent can be selected Hangzhou air drying type waterproof smears BT-2109 for use, reinforcing agent can be selected the novel wet strength agent of TH-P50 of sky, Suzhou standing grain company for use, and reinforcing agent can be selected Hangzhou paper friend's cationic starch for use.Fully mixing can make mixed pulp, for the production of the types of functionality layered product.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 5.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base natural air drying also can be adopted the way of oven dry, get final product goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor size is mould such as the automotive hub of industrial packaging.The stereo concave-convex pattern can change according to mould, and this patent example design is automotive hub, but is not limited to this pattern, and other similar products carry out processing after all can changing mould.

Embodiment 13, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the fresh wheat straw among the embodiment 2 into fresh corn stalk; Make the waste and old cardboard in embodiment 2 step 5) into the sugarcane oar, all the other are with embodiment 2.

The preparation of example 13, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 6 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 30r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight, can add the environment-friendly waterproof oil-proofing agent (account for slurries dry weight 0.2%) of Shanghai Si Kefu in slurries.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 2.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base is transferred to shaping and drying in the hot-die of this make-up machine, the upper and lower mould of hot pressing is at 100Kg/cm ³The effect of hot pressing mold clamping force under carry out hot pressing, the moisture content in the wet base is siphoned away by the vacuum of hot pressing counterdie after vaporizing; The control of hot pressing patrix temperature is at 120 ℃ ± 2 ℃, and hot pressing counterdie temperature is controlled at 160 ℃, and total hot pressing time is 30s, gets goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor is food package box.The stereo concave-convex pattern can change according to mould, and this patent example design is square pattern, but is not limited to this pattern.The compression strength of this food package box is 〉=200N that its plane tensile strength is 0.80Mpa; Density 0.68g/cm ³

Embodiment 14, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the fresh wheat straw among the embodiment 2 into fresh oat straw; Make the waste and old cardboard in embodiment 2 step 5) into the log oar, all the other are with embodiment 2.

The preparation of example 14, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 5 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 10r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.In slurries, once add waterproofing agent (account for slurries dry weight 1%) and reinforcing agent (account for slurries dry weight 1%) and wet strength agent (account for slurries dry weight 0.5%), waterproofing agent can be selected Paper moulded waterproofing agent AD-HBS131 or the tall DWQ-2020-I type of the Jinan multidimensional waterproofing agent of the big chemical industry of Dongguan Australia for use, the optional novel wet strength agent of CK-316 with Shanghai Si Kefu company of reinforcing agent, reinforcing agent can be selected Hangzhou paper friend's cationic starch for use.Fully mixing can make mixed pulp, for the production of the types of functionality layered product.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 3.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 70%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base is entered drying tunnel dry, get goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor size is 1100 * 800cm logistics tray mould.The stereo concave-convex pattern can change according to mould, and this patent example design is the logistics tray pattern, but is not limited to this pattern.

Embodiment 15, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the fresh wheat straw among the embodiment 2 into fresh Chinese sorghum straw; Make the waste and old cardboard in embodiment 2 step 5) into the log oar, all the other are with embodiment 2.

The preparation of example 15, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 7 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 40r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 5.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.With above-mentioned wet base natural air drying, get goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor hypocarp dish mould; Concavo-convex height is 6mm.The patent example design is oval hypocarp pattern, but is not limited to this pattern.

Embodiment 16, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the fresh wheat straw among the embodiment 2 into fresh soybean straw; Make the waste and old cardboard in embodiment 2 step 5) into waste paper limit oar, all the other are with embodiment 2.

The preparation of example 16, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 3 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 50r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 1.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 90%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.With above-mentioned wet base natural air drying, get goods.

Embodiment 17, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the fresh wheat straw among the embodiment 2 into fresh soybean straw; Make the waste and old cardboard in embodiment 2 step 5) into the log oar, all the other are with embodiment 2.

The preparation of example 17, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 5 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 10r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.In slurries, once add waterproofing agent (account for slurries dry weight 2%) and reinforcing agent (account for slurries dry weight 1.5%) and wet strength agent (account for slurries dry weight 0.5%), waterproofing agent can be selected Paper moulded waterproofing agent AD-HBS131 or the tall DWQ-2020-I type of the Jinan multidimensional waterproofing agent of the big chemical industry of Dongguan Australia for use, the optional novel wet strength agent of CK-316 with Shanghai Si Kefu company of reinforcing agent, reinforcing agent can be selected Hangzhou paper friend's cationic starch for use.Fully mixing can make mixed pulp, for the production of the types of functionality layered product.

2), moulding: the slurries after making are transported to by pipeline in the die cavity of full-automatic pulp-molding make-up machine, with vacuum filtration method suction strainer, use 4.0Kg/cm ³Pressure, elder generation's press filtration in die cavity falls to account for the moisture of slurry weight 70%, gets wet base; Weight that namely should wet base be in the die cavity slurry weight 10%.Above-mentioned wet base is entered drying tunnel dry, get goods.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor size is 800 * 800cm logistics tray mould.The stereo concave-convex pattern can change according to mould, and this patent example design is the logistics tray pattern, but is not limited to this pattern.

Embodiment 18, a kind of method of utilizing the grass family stalk to prepare paper pulp,

Make the waste and old cardboard in embodiment 2 step 5) into the log oar, all the other are with embodiment 2.

The preparation of example 18, paper pulp moulding product

1), slurrying: with pulp crushing apparatus above-mentioned pulp board is fully smashed, added the water mixing according to 1: 5 dry weight ratio, above-mentioned paper pulp is put into pulp storage tank, convert the water dilution, and with after the even stirring of the agitator of 10r/min, get slurries; The dry weight of described paper pulp accounts for 0.5% of slurry weight.In slurries, once add waterproofing agent (account for slurries dry weight 1%) and reinforcing agent (account for slurries dry weight 1%) and wet strength agent (account for slurries dry weight 1.5%), waterproofing agent can be selected Paper moulded waterproofing agent AD-HBS131 or the tall DWQ-2020-I type of the Jinan multidimensional waterproofing agent of the big chemical industry of Dongguan Australia for use, the optional novel wet strength agent of CK-316 with Shanghai Si Kefu company of reinforcing agent, reinforcing agent can be selected Hangzhou paper friend's cationic starch for use.Fully mixing can make mixed pulp, for the production of the types of functionality layered product.

3), shaping, side cut and letter sorting finished product: after thermocompression forming was finished, compressed air blew to goods on the conveyer belt, delivered to the side cutter cuts burr again, last quality inspection, packing warehouse-in.This embodiment mould therefor size is (as computer packing box, medical package box and other commercial packaged die).The stereo concave-convex pattern can change according to mould, but is not limited to this pattern.

At last, it is also to be noted that what more than enumerate only is several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.

Claims

1. utilize the grass family stalk to prepare the method for paper pulp, it is characterized in that: as raw material, carry out following steps with the grass family stalk successively:

1), pretreatment of raw material

When raw material is fresh grass family stalk, raw material is cut into the stalk section that length is 1 ~ 30 cm; Get the fresh straw section;

During grass family stalk after raw material is dry the processing, earlier raw material is cut into the stalk section that length is 1 ~ 30cm, and then to put into water temperature be that 60 ~ 90 ℃ hot water or mass concentration are 5 ~ 30% aqueous slkali immersion treatment 10 ~ 50 minutes, must handle the back stalk section;

2), physics slurrying:

The fresh straw section of step 1) gained is carried out mechanical jordaning and thread rolling; Length until the stalk fibre muscle of gained is 30 ~ 50mm;

Carrying out mechanical jordaning and thread rolling after perhaps adding water in the stalk section after processing, is 0.5 ~ 50mm until the length of the stalk fibre muscle of gained, the consumption of described water be in the step 1) the stalk dry weight 1% ~ 5%;

3), in step 2) add the further thread rolling of the laggard row of water in the stalk fibre muscle of gained and grind after, be 10 ~ 20mm until the length of stalk fibre muscle, get fiber pulp; The consumption of described water be in the step 1) the stalk section dry weight 5% ~ 10%;

4), decolouring or painted:

Described decolouring is:

The adding mass concentration is 0.1 ~ 2% lime solution or KOH solution or NaOH solution or H in above-mentioned fiber pulp ₂O ₂The solution decolouring, bleaching time is 30 ~ 100 minutes; Drainage drained 30 ~ 60min minute again, must handle the back fiber pulp; Lime solution or KOH solution or NaOH solution or H ₂O ₂The volume ratio of solution and fiber pulp is 2 ~ 10%;

Perhaps fed ozone treatment 60-90 minute in above-mentioned fiber pulp, the ozone that per hour needs in the fiber pulp per ton to feed is 8 ~ 15g; Must handle the back fiber pulp;

Thereby realize decolouring, bleaching and softening the processing;

Described being colored as:

In the fiber pulp of step 3) gained, add dyestuff, the consumption of dyestuff be in the step 1) the stalk section dry weight 2% ~ 10%, must handle the back fiber pulp, thereby make the stalk fibre muscle have particular color;

5), mechanical pulp mixes with chemical pulp

After the processing of step 4) gained fiber pulp and conventional chemical slurry or secondary stock according to the dry weight of 1:0.1 ~ 10 than mixing; Add water again and dredge slurry, get the mixing slurry as paper pulp raw material.

2. the method for utilizing the grass family stalk to prepare paper pulp according to claim 1, it is characterized in that: described grass family stalk is the stalk of wheat, barley, paddy rice, reed, corn or Chinese sorghum.

3. the method for utilizing the grass family stalk to prepare paper pulp according to claim 1 and 2 is characterized in that: in the described step 1) raw material cut into the stalk section that length is 4 ~ 9 cm.

4. the method for utilizing the grass family stalk to prepare paper pulp according to claim 3, it is characterized in that: described step 5) is: the processing rear slurry of step 4) gained and conventional chemical slurry or secondary stock according to the dry weight of 1:0.5 ~ 4 than mixing.

5. the method for utilizing the grass family stalk to prepare paper pulp according to claim 4 is characterized in that: the conventional chemical slurry in the described step 5) is cane syrup, former wood-pulp board or former bamboo pulp; Secondary stock is waste paper limit, waste paperboard or the disregard message slurries that get made of paper.