CN101285283A - Paper pulp moulded plastic products and manufacture thereof - Google Patents
Paper pulp moulded plastic products and manufacture thereof Download PDFInfo
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- CN101285283A CN101285283A CNA2008103018425A CN200810301842A CN101285283A CN 101285283 A CN101285283 A CN 101285283A CN A2008103018425 A CNA2008103018425 A CN A2008103018425A CN 200810301842 A CN200810301842 A CN 200810301842A CN 101285283 A CN101285283 A CN 101285283A
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Abstract
The invention relates to a paper pulp mould product which is antimicrobial and rotproof, protects the environment and can be used for a long time. The technical point is to prepare the paper pulp mould product by using the paper pulp made of Chinese stellera roots. The paper pulp mould product has the advantages that the fiber flexibility is good, the product is not crisp, the product is antimicrobial and rotproof as well as mothproof and acid and alkali resistant, etc., is suitable for a long-time storage, has the natural straw yellow green color and is particularly suitable for storing valuables and valuable medical materials for a long time.
Description
Technical field
The present invention relates to moulded paper pulp product, particularly relate to a kind of moulded paper pulp product and manufacture method and purposes that adopts Chinese Stellera Root Stellerachamejasme L. as raw material.
Background technology
Moulded paper pulp product (Pulp Moulded Products) is with certain density paper pulp, adding an amount of chemical assistant method by vacuum or pressurization in make-up machine makes fiber be evenly distributed on die surface, thereby form l Water Paper mould base with the geometry drafted and size, the demoulding of further dewatering again, the goods that dry shaping forms.The moulded paper pulp product of technical grade is a raw material with waste paper and waste paperboard mainly.The goods that the waste paper of heterogeneity is produced have different performances, therefore, can select for use the collocation of different waste paper or several waste paper to use, to obtain favorable economic benefit and serviceability according to product-use.At present paper mould is a raw material with herbaceous plant fiber pulp such as the reed of domestic wide material sources, bagasse, wheat straw, stalks mainly.The main processes of paper matrix production of articles is: making beating is joined slurry, product molding, goods cold moudling, product dried, goods hot pressing finishing etc.
Paper mould spare has many remarkable advantages with respect to the EPS bolster, as: 1) raw material of paper pulp moulding packing goods are waste paper and various fiber-like material, and wide material sources and collection easily can not cause obstacle to environment and recovery; 2) the paper pulp moulding packing goods scope of application is extensive, now uses foam can replace with moulded paper pulp product basically as the product of liner.The moulded paper pulp product Stackable deposits in, and than the little 1/2-2/5 in storage area that foamed plastic accounts for, freight charges and warehousing costs are less; 3) the paper products static electricity resistance is good, and the foamed plastic friction is easy to generate static, and this plays the better protect effect to electronic product and household appliances etc.; Food water was not volatile when 4) plastic products were packed, easily mouldy rotting, and paper products have permeable gas performance, thus reach antiseptic effect.Quite extensive as its range of application of packing articles, can be used for disposable tableware, the packing of bright egg, fruit, flowers, crops, glassware, ceramic, electronic product, handicraft, medicine equipment, machinery parts and other friable product.Show that according to interrelated data moulded paper pulp product output has in the world reached more than 400,000 tons at present.Along with China and countries in the world economy integrate with approaching day by day, applying undoubtedly of moulded paper pulp product has a high potential.
But present moulded paper pulp product also uses as the substitute of foam plastic product mostly, is applied in some comparatively packaging fields of low side.And the storage life of existing paper pulp moulding product falls short of, and especially has the invasion and attack of making moist and being subjected to microorganism in the area of warm and moist comparatively.Itself is difficult to long preservation goods, has limited the application of moulded paper pulp product at the long-term packaging field that uses of various needs simultaneously.The current mode of generally taking to add the corrosion-resistant chemical assistant overcomes this defective, but makes the feature of environmental protection of goods and security greatly reduce again like this.The moulded paper pulp product that this area is badly in need of at present developing antibiotic anticorrosion, environmental protection, can is used for a long time and preserve.
Summary of the invention
The moulded paper pulp product that technical problem to be solved by this invention provides a kind of antibiotic anticorrosion, environmental protection, can use for a long time and preserve.This moulded paper pulp product is to form with the pulp preparation that the root of Chinese Stellera Root Stellerachamejasme L. is made.
Further, above-mentioned moulded paper pulp product, the pulp preparation of the endothelium preparation of the root of employing Chinese Stellera Root Stellerachamejasme L. forms.
Wherein, this moulded paper pulp product also adopts the common paper pulp of knowing clearly as raw material, and weight percentage is 1%-99%.
Preferably, the weight percentage of above-mentioned common paper pulp is 30%-90%.Preferred, the weight percentage of above-mentioned common paper pulp is 50%-80%.
Second technical problem to be solved by this invention provides a kind of method for preparing above-mentioned moulded paper pulp product.This method may further comprise the steps:
A, making beating: with the root of Chinese Stellera Root clean dry, go to pulverize, add behind the crust poach soft, the slurry after boiling is put into lyotropes such as cloth bag, water flushing drop desizing, put in the slurry barrel and pull an oar into Chinese Stellera Root paper pulp; B, join slurry: use Chinese Stellera Root paper pulp separately, or Chinese Stellera Root paper pulp and common paper pulp are mixed; C, last mold forming; D, the typing of colding pressing; E, drying; F, thermocompression forming and finishing.
Wherein, the beating degree of Chinese Stellera Root paper pulp is 34 ° of SR-42 ° of SR among the said method step a.Be preferably 38 ° of SR-42 ° of SR.
Wherein, mixed paper pulp is adjusted beating consistency to 1.5%-2% among the said method step b.
The invention has the beneficial effects as follows: moulded paper pulp product of the present invention has Chinese Stellera Root itself as the Tibetan medicine material, has that century-old worm does not eat into, characteristics such as mouse does not sting, acid and alkali-resistance.Do not add chemicals in the moulded paper pulp product of the present invention, environment is not polluted.Break through the inherent shortcoming of tradition according to moulded paper pulp product, have the fiber flexibility good, non-friable, mothproof, put advantages such as corruption, fungi-proofing, anti-soda acid, and have natural straw colour green, and be fit to long-term storage, especially be suitable for precious article of long preservation and valuable medicinal.
The specific embodiment
Moulded paper pulp product of the present invention has adopted the main raw material of the root of Chinese Stellera Root (hide name: donkey-hide gelatin is as handing over) (Stellera chamejasme L.) as preparation paper pulp.Chinese Stellera Root belongs to the Thymelaeceae plant and has another name called the gelsemium elegan or the red root of langdu, its nature and flavor hardship, flat, hot, little poison arranged.The time of excavating bloomed the time in annual autumn " donkey-hide gelatin is as handing over ", was grown on about 3200 meters to the 4200 meters Qinghai-Tibet Platean of height above sea level to the east of the Hengduan mountain range.The root of Chinese Stellera Root contains sterol, phenolic constituent, amino acid, triterpenes and poisonous polymeric organic acid, can also contain anthra-glucoside.After cork peels off, expose soft fiber, body is light, and matter is tough, frangibility not, and section juvenile wood yellow-white, outer ring bast white is fibrous.Gas is little, little sweet, little hardship of distinguishing the flavor of and peppery.
The optimization of embodiment one Chinese Stellera Root pulp production processes
The preparation technology of existing conventional moulded paper pulp product comprises: join slurry, moulding, cold pressing typing, drying, thermocompression forming and finishing.Join slurry: the mixed with prescription such as paper pulp, auxiliary agent, filler, water is added to and carries out size degradation in the pulper,, be mixed into and have certain density magma through processing such as screening, desanding purification, defibrinations.
Moulding: the molding mode of moulded paper pulp product mainly contains two kinds, i.e. interior slip casting extrusion modling of mould and the outer vacuum adsorption molding of mould, and their principle all is that pulp-water is filtered, and fiber is trapped on the mould, forms half hygrometric state goods of definite shape.
The typing of colding pressing: promptly adopt forming press to dewater and obtain semiarid goods with the half hygrometric state goods of mechanical cold milling process after to moulding.Reduce moisture, reduction energy consumption for drying, the raising drying efficiency of goods on the one hand; Increase the interfibrous adhesion of goods on the other hand, make that the goods quality is evenly solid, outward appearance well-pressed neat, smooth surface is attractive in appearance.The moisture content that product is colded pressing after finalizing the design is 50%-75%,
Dry: drying mode is mainly taked: two kinds of outer vacuum road convective drying of mould or make-up machine heat dryings; Direct drying in mould is adopted in the slip casting extrusion modling mostly in the mould, and the drying of goods is intermittently or in the drying oven of working continuously to carry out.Goods are sent in the drying oven, come dried product with hot-air, and the temperature of beginning is 250-300 ℃ (goods are in 7-10 moisture minimizing 50% in second), and temperature is reduced to 100-150 ℃ then.Have conveyer in the continuous drier, by different humidity provinces, final drying is to get final product about 10%-12% to moisture content to product in stove.If any special requirement, can be dried to 3%-4%.
The hot pressing shaping: the method with extruding on heat pressing forming machines makes the goods quality more closely knit, and geomery is more accurate.This thickness for notes type packing articles wall is even, smooth in appearance is smooth and improve intensity all is necessary.The paper matrix goods promptly can use after the drying once again.But also need to carry out particular processing sometimes, as press polish, coating, cure or at surface printing pattern and character etc.Obtain finished product after the packing.
Therefore the present invention mainly plants to the making beating tankman when making and gropes owing to main composition to paper pulp improves.
Paper pulp generally is divided into mechanical pulp, sulfate pulp, sulphite wood pulp three major types.Experiment shows that the Chinese Stellera Root among the present invention preferably is prepared into mechanical pulp, to preserve active skull cap components wherein as far as possible.When handling Chinese Stellera Root paper pulp, should make fiber obtain sufficient swollen as far as possible, and produce plastic deformation, fiber surface is fluffed slightly, guarantee after the paper products drying, still keep good binding between the fiber, thereby improve product strength.
The selection of beating degree
(1) beating degree (° SR).Use 26 (° SR), 30 (SR °), 34 (° SR), 38 (° SR), 42 (° SR), the gradient of 46 (° SR) is screened beating degree, and the result shows 34 (° SR), 38 (° SR), 42 (° SR) effect is better, molding effect the best of 38 ° of SR-42 ° of SR goods.
(2) (pulp density %) is meant that the degree of bone dry fiber is beating consistency in the suspension of constant weight (or volume) fiber to beating consistency.With the dry method measurement of usefulness the most usually.The last machine concentration that existing moulded paper pulp product is produced slurries is generally 1%, and the concentration of slurry during moulding then is about 0.5%.The present invention screens in beating consistency 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, and the result shows, presses aforesaid technological operation on the beating consistency of 1.5%-2% behind the machine, and the molding effect of the moulded paper pulp product of preparing is best.
(3) selection of adding filler and auxiliary agent
Through screening, the calcium carbonate superfine powder of 0.1～1.0 μ m can arrive opacity and the air permeability to improve goods in the above-mentioned paper pulp.When consumption is higher, calcium carbonate has considerable influence to the physical strength of goods, deflection can significantly improve, calcium carbonate content is no more than 20% of gross dry weight, but must add presence agent and reinforcing agent this moment, preferably adopt the adjuvant systems of being made up of cationic starch and polyacrylamide, addition is determined according to the amount that adds calcium carbonate.The concentration of starching when adding auxiliary agent is also very important.The concentration of slurry contains through test and shows that after the Chinese Stellera Root pulp content surpasses total pulp content 30% add the auxiliary agent better effects if in 2%-3% while stirring, mixing speed generally should be about 30～60 rev/mins.When make-up machine is carried, the beating consistency dilution with slurries is 1.5%-2% again, so that the finished fabric slurry evenly.
Among the present invention directly by the technology after the above-mentioned optimization, do not add auxiliary agent and calcium carbonate, use the Chinese Stellera Root paper pulp and the common paper pulp of different proportionings to carry out the preparation of paper oar moulding article, prepared and contain 100% common paper pulp, contain 10% Chinese Stellera Root paper pulp, contain 30% Chinese Stellera Root paper pulp, contain 50% Chinese Stellera Root paper pulp, contain 70% Chinese Stellera Root paper pulp, contain 90% Chinese Stellera Root paper pulp and contain the goods of the different size of 100% Chinese Stellera Root paper pulp.
The quality index of the paper oar moulding article that embodiment two the present invention produce detects
At present the performance of estimating paper oar moulding article with one or several index exactly is very difficult, does not still have national standard (relevant criterion is not also appeared in the newspapers) at present abroad.Therefore standard-required and the detection method of having used for reference domestic paperboard products detects the result of above-mentioned screening experiment and the quality index of paper oar moulding article of the present invention.Test item has basal ration, bursting strength, ring crush intensity, horizontal ring crush index, concora crush intensity, fracture length, moisture etc.
The method standard that detection uses is carried out with reference to following national standard: GB/T 451.2-2002 " mensuration that paper and cardboard are quantitative ", GB/T 453-2002 " mensuration of paper and cardboard tensile strength (constant speed loading method) ", GB/T 455-2002 " mensuration of paper and cardboard tearability ", GB/T 458-2002 " mensuration of paper and cardboard air permeability (Xiao Baierfa) ", GB/T459-2002 " mensuration of paper and cardboard retractility ".Paper pulp is used different moulds, and the specification that needs when making each standard detection cardboard detects.
The quality index of table 1 paper oar of the present invention moulding article
| The goods composition | Contain 100% common paper pulp | Contain 10% Chinese Stellera Root paper pulp | Contain 30% Chinese Stellera Root paper pulp | Contain 50% Chinese Stellera Root paper pulp | Contain 70% Chinese Stellera Root paper pulp | Contain 90% Chinese Stellera Root paper pulp | Contain 100% Chinese Stellera Root paper pulp |
| Tensile strength | High | High | High | High | In | In | Low |
| Tear resistance | In | In | High | High | High | In | In |
| Ring crush intensity | High | High | High | High | High | In | In |
Therefore the goods that contain 10%-90% Chinese Stellera Root paper pulp all have the better physical performance.And that all things considered contains the pulp goods physical property of 30%-70% Chinese Stellera Root paper pulp is better, and about 50% is best.
Embodiment three moulded paper pulp products of the present invention antibiotic, protection against the tide and fungus test
Cordyceps sinensis is valuable Chinese medicine, generally is to be unearthed, not take when spore is dispersed at the early summer stroma, shines to 6 seventy percent and does, and removes quasi-fibrous attachment and impurity, dries or low temperature drying.The storage of Chinese caterpillar fungus is extremely important, can deposit as many as 5 years under vacuum condition; If antivacuum condition, the shelf-life also is at most 2-3.The storage main points of Chinese caterpillar fungus are moistureproof, mothproof and insect protected.Will change seedling after Chinese caterpillar fungus makes moist, promptly polypide becomes ghost, pinch the back and become flat, but the Chinese caterpillar fungus quality reduces.Under proper temperature, airborne mycotic spore is scattered in the Cordyceps sinensis surface, can absorb the medicinal material nutrient, sprouts mycelia, and the justacrine ferment further destroys medicinal material.If with worm's ovum, just can hatch on the Cordyceps sinensis when temperature acquires a certain degree.Some moth can secrete enzyme, decomposes the composition of medicinal material, causes that medicinal material is rotten, is not suitable for taking.So,, will bring great economic loss if handle badly in the preservation.And in sale, preservation or market are showed, use at present be mostly bamboo and wood box or molded pulp box, its shelf-life is greatly descended.
The present invention adopts technology that embodiment one determines and is prepared into the Chinese caterpillar fungus packing box by different ratios of raw materials, be respectively charged into the Chinese caterpillar fungus of same batch and grade, carry out the antibiotic of paper oar moulding article of the present invention, protection against the tide and the test of antifungi performance, wherein the method for testing of antibacterium performance and antifungi performance is measured at corresponding point in time sampling with reference to " QB/T 2591-2003 antibiotic plastic-anti-microbial property test method and antibacterial effect " and is carried out, and the moisture proof ability is then measured at corresponding point in time sampling according to the method for GB/T 462-2003 " mensuration of paper and cardboard moisture " defined.The results are shown in Table 2:
Table 2 antibacterium performance test (antibacterium rate %) result
| Contain 100% common paper pulp | Contain 10% Chinese Stellera Root paper pulp | Contain 30% Chinese Stellera Root paper pulp | Contain 50% Chinese Stellera Root paper pulp | Contain 70% Chinese Stellera Root paper pulp | Contain 90% Chinese Stellera Root paper pulp | Contain 100% Chinese Stellera Root paper pulp | |
| Antibiotic rate | Defective | 75 | 86 | 90 | 99 | 99 | 99 |
Annotate: antibacterium rate (%) is strong anti-biotic material more than 99, is anti-biotic material more than 90.
The result shows that the goods that contain 10% Chinese Stellera Root paper pulp just have certain antibacterial ability, and it is stronger to contain the goods antibacterial ability of 30% above Chinese Stellera Root paper pulp, meets the requirement of anti-biotic material substantially.
Antifungi performance test (mildew grade) the results are shown in Table 3:
Table 3 antifungi performance result of the test
| Sample | Contain 100% common paper pulp | Contain 10% Chinese Stellera Root paper pulp | Contain 30% Chinese Stellera Root paper pulp | Contain 50% Chinese Stellera Root paper pulp | Contain 70% Chinese Stellera Root paper pulp | Contain 90% Chinese Stellera Root paper pulp | Contain 100% Chinese Stellera Root paper pulp |
| The mildew grade | 4 grades | 3 grades | 2 grades | 2 grades | 1 grade | 1 grade | 1 grade |
Annotate: the mildew grade meets 0 grade anti-biotic material can report strong antifungi effect; The mildew grade meets 1 grade anti-biotic material can report the antifungi effect.
The result shows
Put moist ability test: the initial moisture content of goods all is controlled at 8%, putting into moisture respectively is 15% Chinese caterpillar fungus, closing containers and at 25 degrees centigrade is measured moisture and bacterium and the mould situation (seeing Table 4) of the moisture of each goods and Chinese caterpillar fungus inside after placing 24 under 80% the relative humidity.
Table 4 moisture proof ability test result
| After 24 months | Contain 100% common paper pulp | Contain 10% Chinese Stellera Root paper pulp | Contain 30% Chinese Stellera Root paper pulp | Contain 50% Chinese Stellera Root paper pulp | Contain 70% Chinese Stellera Root paper pulp | Contain 90% Chinese Stellera Root paper pulp | Contain 100 % Chinese Stellera Root paper pulp |
| The goods moisture | 29％ | 27％ | 22％ | 21％ | 19％ | 23％ | 25％ |
| The Chinese caterpillar fungus moisture | 21％ | 14％ | 15％ | 17％ | 14％ | 13％ | 14％ |
| The outward appearance situation | Obviously rotten | Not rotten | Not rotten | Not rotten | Not rotten | Not rotten | Not rotten |
| The mould situation | Nonconforming | Nonconforming | Close requirement | Close requirement | Close requirement | Close requirement | Close requirement |
| The bacterium situation | Close requirement | Close requirement | Close requirement | Close requirement | Close requirement | Close requirement | Close requirement |
The characteristics of paper pulp moulding product of the present invention are: look is little Huang, quality more slightly, thicker, fiber is flexible, and is non-friable, water imbibition is strong. Be a kind of Tibetan medicine material because of Chinese Stellera Root itself simultaneously, do not use chemicals, the property of medicine of raw material itself is well kept, so the characteristics such as the paper mould of producing has that worm does not eat into, mouse does not sting, antibiotic, protection against the tide and mildew-resistant. Paper pulp moulding product of the present invention mainly adopts the root of Chinese Stellera Root to make raw material, is natural product. Environmentally safe.
Claims (10)
1. moulded paper pulp product is characterized in that: the pulp preparation with the root preparation of Chinese Stellera Root forms.
2. moulded paper pulp product as claimed in claim 1 is characterized in that: described paper pulp is prepared from by the endothelium of the root of Chinese Stellera Root.
3. moulded paper pulp product as claimed in claim 1 is characterized in that: also add the common paper pulp of knowing clearly and make raw material, its weight percentage is 1%-99%.
4. moulded paper pulp product as claimed in claim 3 is characterized in that: the weight percentage of described common paper pulp is 30%-90%.
5. moulded paper pulp product as claimed in claim 4 is characterized in that: the weight percentage of described common paper pulp is 50%-70%.
6. method for preparing claim 1 or 2 described moulded paper pulp products is characterized in that may further comprise the steps:
A, making beating: with the root of Chinese Stellera Root clean dry, go to pulverize, add behind the crust poach soft, the slurry after boiling is put into lyotropes such as cloth bag, water flushing drop desizing, put in the slurry barrel and pull an oar into Chinese Stellera Root paper pulp; B, with mold forming on the Chinese Stellera Root paper pulp; C, the typing of colding pressing; D, drying; E, thermocompression forming and finishing.
7. method for preparing each described moulded paper pulp product of claim 35 is characterized in that may further comprise the steps:
A, making beating: with the root of Chinese Stellera Root clean dry, go to pulverize, add behind the crust poach soft, the slurry after boiling is put into lyotropes such as cloth bag, water flushing drop desizing, put in the slurry barrel and pull an oar into Chinese Stellera Root paper pulp; B, join slurry: Chinese Stellera Root paper pulp and common paper pulp are mixed; C, last mold forming; D, the typing of colding pressing; E, drying; F, thermocompression forming and finishing.
8. the method for preparing moulded paper pulp product as claimed in claim 7 is characterized in that: step
The beating degree of Chinese Stellera Root paper pulp is 34 ° of SR-42 ° of SR among a.
9. the method for preparing moulded paper pulp product as claimed in claim 8 is characterized in that: step
The beating degree of Chinese Stellera Root paper pulp is 38 ° of SR-42 ° of SR among a.
10. the method for preparing moulded paper pulp product as claimed in claim 7 is characterized in that: mixed paper pulp is adjusted beating consistency and is gone up mold forming again to 1.5%-2% among the step b.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102852054A (en) * | 2012-08-03 | 2013-01-02 | 苏州市盛林纸制品有限公司 | Process for manufacturing inner pad of wine through molding pulp |
| CN104369951A (en) * | 2014-11-10 | 2015-02-25 | 银川市富邦印刷包装有限公司 | Tea cake packaging box formed through molded pulp and preparing method of tea cake packaging box |
| CN106400566A (en) * | 2016-08-19 | 2017-02-15 | 张玉杰 | Process for preparing original ecological plant fiber molded product from plant straws |
| CN108560307A (en) * | 2018-04-28 | 2018-09-21 | 句容市东山纸品厂 | A kind of antibacterial preparation method with paper |
| CN108642970A (en) * | 2018-04-28 | 2018-10-12 | 句容市东山纸品厂 | A kind of preparation method of antimicrobial form wrapping paper |
| CN109972443A (en) * | 2019-03-14 | 2019-07-05 | 华南理工大学 | A kind of mould proof water resistant nursery moulded paper pulp product and the preparation method and application thereof |
| CN113811654A (en) * | 2019-05-09 | 2021-12-17 | 金箭印刷科技(昆山)有限公司 | Paper pulp molding process and online intelligent drying equipment thereof |
| CN115852747A (en) * | 2022-12-30 | 2023-03-28 | 湖南工业大学 | Method for preparing paper pulp molding packaging product |
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- 2008-05-30 CN CNA2008103018425A patent/CN101285283A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852054A (en) * | 2012-08-03 | 2013-01-02 | 苏州市盛林纸制品有限公司 | Process for manufacturing inner pad of wine through molding pulp |
| CN102852054B (en) * | 2012-08-03 | 2016-02-03 | 苏州市盛林纸制品有限公司 | The manufacture craft of pad in a kind of molded pulp drinks |
| CN104369951A (en) * | 2014-11-10 | 2015-02-25 | 银川市富邦印刷包装有限公司 | Tea cake packaging box formed through molded pulp and preparing method of tea cake packaging box |
| CN106400566A (en) * | 2016-08-19 | 2017-02-15 | 张玉杰 | Process for preparing original ecological plant fiber molded product from plant straws |
| CN108560307A (en) * | 2018-04-28 | 2018-09-21 | 句容市东山纸品厂 | A kind of antibacterial preparation method with paper |
| CN108642970A (en) * | 2018-04-28 | 2018-10-12 | 句容市东山纸品厂 | A kind of preparation method of antimicrobial form wrapping paper |
| CN109972443A (en) * | 2019-03-14 | 2019-07-05 | 华南理工大学 | A kind of mould proof water resistant nursery moulded paper pulp product and the preparation method and application thereof |
| CN109972443B (en) * | 2019-03-14 | 2020-09-22 | 华南理工大学 | Mould-proof water-resistant seedling raising paper pulp moulded product and preparation method and application thereof |
| CN113811654A (en) * | 2019-05-09 | 2021-12-17 | 金箭印刷科技(昆山)有限公司 | Paper pulp molding process and online intelligent drying equipment thereof |
| CN113811654B (en) * | 2019-05-09 | 2023-07-25 | 金箭印刷科技(昆山)有限公司 | Pulp molding process and online intelligent drying equipment thereof |
| CN115852747A (en) * | 2022-12-30 | 2023-03-28 | 湖南工业大学 | Method for preparing paper pulp molding packaging product |
| CN115852747B (en) * | 2022-12-30 | 2023-10-31 | 湖南工业大学 | Method for preparing pulp molding packaging product |
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