CN103300472B - Novel cigarette production method applying 3D (3-dimensional) printing technology - Google Patents
Novel cigarette production method applying 3D (3-dimensional) printing technology Download PDFInfo
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- CN103300472B CN103300472B CN201310269937.4A CN201310269937A CN103300472B CN 103300472 B CN103300472 B CN 103300472B CN 201310269937 A CN201310269937 A CN 201310269937A CN 103300472 B CN103300472 B CN 103300472B
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- cigarette
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- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 115
- 238000007639 printing Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title abstract description 17
- 238000005516 engineering process Methods 0.000 title abstract description 5
- 241000208125 Nicotiana Species 0.000 claims abstract description 131
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 131
- 239000000843 powder Substances 0.000 claims abstract description 126
- 239000000853 adhesive Substances 0.000 claims abstract description 54
- 230000001070 adhesive effect Effects 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000010146 3D printing Methods 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims description 44
- 239000007921 spray Substances 0.000 claims description 19
- 238000002360 preparation method Methods 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 7
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- 239000000779 smoke Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract 2
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 239000002023 wood Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 12
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 description 5
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 5
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000750 progressive effect Effects 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 235000013312 flour Nutrition 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229920006221 acetate fiber Polymers 0.000 description 2
- 235000019506 cigar Nutrition 0.000 description 2
- 229940089401 xylon Drugs 0.000 description 2
- 235000003283 Pachira macrocarpa Nutrition 0.000 description 1
- 240000001085 Trapa natans Species 0.000 description 1
- 235000014364 Trapa natans Nutrition 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000009165 saligot Nutrition 0.000 description 1
Abstract
The invention relates to the field of cigarette production, in particular to a novel cigarette production method applying a 3D (3-dimensional) printing technology. A novel cigarette comprises a cigarette stick and a filter tip stick, wherein the cigarette stick is formed by bonding tobacco powder ground by tobacco leaves through an adhesive. The production method of the novel cigarette provided by the invention comprises the following steps: producing the cigarette by utilizing the 3D printing technology, increasing the tobacco powder layer by layer in hierarchical processing and superstition solidification forming ways to generate a 3D entity cigarette, spraying the adhesive through a 3D printer according to the shape of each cross section designed in software, carrying out progression layer by layer and finally obtaining the cigarette stick which is formed by overlapping all the cross sections, so that the production precision is effectively ensured. Meanwhile, the treatment process of the tobacco leaves is simplified, the application scope of tobacco raw materials is broadened, the utilization rare of the tobacco raw materials is improved, and the wood gas of cigarette smoke is removed. The 3D printer used in the novel cigarette production method is smaller in size and is more economic, the relevant procedure of computer graphic data can be directly utilized to generate the cigarette, and the cost is saved while the production is convenient.
Description
Technical field
The invention belongs to cigarette manufacture technical field, be specifically related to a kind of cigarette preparation method of the 3D of utilization printing technique.
Background technology
Traditional technique of cigarette that tobacco leaf is made, comprises the separated of offal and tobacco leaf, and throwing and cigarette roll, and the operation of tipping.First tobacco leaf is cut into pipe tobacco, then roll in cigarette paper.Because leaf stalk has different physical characteristics from blade, conventional processing method is in the initial period of tobacco leaf processing, leaf stalk to be separated from Tobacco Leaves, and then leaf stalk carries out respectively different processing from blade.From blade, the operation of separated leaf stalk is conventionally very complicated.Traditional cigarette mode is had relatively high expectations to raw tobacco material, and too broken offal and cigarette ash cannot directly be used.Prior art need to be wrapped up pipe tobacco with cigarette paper, yet the burning of cigarette paper can be introduced the xylon gas of cigarette smoke.The form of traditional cigarette, owing to submitting to the requirement of traditional cigarette machine, is confined to columniform design.Simultaneously traditional cigarette manufacture needs large-scale cigar mill's factory building and large-scale throwing equipment and cigarette machine, costly.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of cigarette preparation method of the 3D of utilization printing technique, utilize 3D printing technique to make cigarette, the mode of employing layering processing, superposition solidified forming successively increases tobacco powder and generates 3D entity cigarette, greatly simplified the manufacture craft of cigarette, the design space increasing in the time of cost-saving.
The cigarette preparation method that the invention provides a kind of 3D of utilization printing technique, comprises the following steps:
A. after tobacco leaf being milled in pulverizer to powder, cross mesh screen, obtain tobacco powder, add tobacco powder to 3D printer supplying in powder cylinder;
B. operate graph data software in computer, design the shape of cigarette rods;
C. on powder cylinder powder-laying roller move from left to right, make to enter moulding cylinder for the tobacco powder in powder cylinder, on moulding cylinder platform, form one deck tobacco powder layer;
D. printhead sprays adhesive to the tobacco powder layer on moulding cylinder platform, and the shape of the attachment position of adhesive is identical with the bottom cross sectional shape of the cigarette rods shape of design, and the part tobacco powder that touches adhesive solidifies and coheres rapidly;
E. moulding cylinder platform moves down a segment distance, and then powder-laying roller moves from left to right, makes on the tobacco powder layer of moulding cylinder platform, to form the tobacco powder layer of one deck for the tobacco powder in powder cylinder again, and the part tobacco powder that touches adhesive solidifies and coheres rapidly;
F. printhead sprays adhesive towards the tobacco powder layer of moulding cylinder platform, and the shape of the attachment position of adhesive is identical with the cross sectional shape of the correspondence position of the cigarette rods shape of design;
G. repeating step e and step f repeatedly, until printed;
H. the cigarette rods that standing printing completes, makes cigarette rods completion of cure;
I. the loose tobacco powder in cigarette rods surface is removed to residual tobacco powder after collection completes;
J. the bottom at cigarette rods affixes the filter rod that shape matches.
Wherein, utilize fan to blow away the loose tobacco powder in cigarette rods surface; Use dust exhaust apparatus to collect residual tobacco powder in the aftershaping cylinder that completes.
The particle diameter of described tobacco powder is 10 μ m～100 μ m, and in cigarette rods, the quality of tobacco powder is 0.5g～1.0g.Tobacco leaf needed mesh screen after wearing into tobacco powder, selected different mesh screens can produce the tobacco powder of different-grain diameter, and in cigarette, the quality of tobacco powder is determined by the shape size of cigarette rods.Described adhesive is that concentration is the aqueous solution of 1%～3% sodium carboxymethylcellulose, can make the tobacco powder being in contact with it effectively solidify and cohere.Described filter rod is made by acetate fiber.Being shaped as of described cigarette rods is cylindrical, square column type or triangle cylindricality.Operating personnel also can other produce required shape by Computer Design.
The cigarette preparation method of utilization 3D printing technique provided by the invention, utilize 3D printing technique to make cigarette, the mode of employing layering processing, superposition solidified forming successively increases tobacco powder and generates 3D entity cigarette, 3D printer sprays adhesive according to the shape of the every layer of cross section designing in software, progressive, the cigarette rods finally obtaining is to form by each cross section is overlapping, has effectively guaranteed production precision.The present invention, to easier unified abrasive dust processing mode for full wafer tobacco leaf picking, without separated tobacco leaf offal, has simplified the treatment process of tobacco leaf greatly.Because the present invention processes the whole abrasive dusts of raw tobacco material, broken offal can equally with tobacco leaf be used with cigarette ash, also widen widely the scope of application of tobacco material, and also recyclable recycling of remaining tobacco powder in production process, improved the utilization rate of tobacco material.Because the present invention does not use pipe tobacco, so without wrapping up pipe tobacco with cigarette paper, removed and introduced the xylon gas of cigarette smoke in traditional cigarette due to the burning of cigarette paper.The present invention can utilize Computer Design to go out the cigarette profile that traditional production technique cannot produce, for example: square column type, water chestnut cylindricality, triangle cylindricality and other special shape of designing in computer arbitrarily, allow people can more effectively produce the cigarette with special shape.Simultaneously, than traditional cigarette, manufacture required large-scale cigar mill's factory building and large-scale throwing equipment and cigarette machine, the 3D printer volume that the present invention uses is less and more economical, can directly utilize the relevant procedures of computer graphics data to generate cigarette, produce and saved easily cost simultaneously.
Accompanying drawing explanation
Fig. 1 is 3D printer structural representation
Fig. 2 is the structural representation of specific embodiment 1
Fig. 3 is the structural representation of specific embodiment 2
Fig. 4 is the structural representation of specific embodiment 3
Wherein, 1-is for powder cylinder, 2-powder-laying roller, 3-printhead, 4-moulding cylinder, 5-moulding cylinder platform.
The specific embodiment
Below in conjunction with specific embodiment and Figure of description, the present invention is further illustrated:
The cigarette preparation method that the invention provides a kind of 3D of utilization printing technique, comprises the following steps:
A. after tobacco leaf being milled in pulverizer to powder, cross mesh screen, obtain tobacco powder, add tobacco powder to 3D printer supplying in powder cylinder 1;
B. operate the graph data software in computer, design the shape of cigarette rods;
C. on powder cylinder 1 powder-laying roller 2 move from left to right, make to enter moulding cylinder 4 for the tobacco powder of 1 li, powder cylinder, on moulding cylinder platform 5, form one deck tobacco powder layer;
D. printhead 3 sprays adhesive to the tobacco powder layer on moulding cylinder platform 5, and the shape of the attachment position of adhesive is identical with the bottom cross sectional shape of the cigarette rods shape of design, and the part tobacco powder that touches adhesive solidifies and coheres rapidly;
E. moulding cylinder platform 5 moves down a segment distance, and then powder-laying roller 2 moves from left to right, makes on the tobacco powder layer of moulding cylinder platform 5, to form the tobacco powder layer of one deck for the tobacco powder of 1 li, powder cylinder again, and the part tobacco powder that touches adhesive solidifies and coheres rapidly;
F. printhead 3 sprays adhesive towards the tobacco powder layer of moulding cylinder platform 5, and the shape of the attachment position of adhesive is identical with the cross sectional shape of the correspondence position of the cigarette rods shape of design;
G. repeating step e and step f repeatedly, until printed;
H. the cigarette rods that standing printing completes, makes cigarette rods completion of cure;
I. the loose tobacco powder in cigarette rods surface is removed to residual tobacco powder after collection completes;
J. the bottom at cigarette rods affixes the filter rod that shape matches.
In technique scheme, step I utilizes fan to blow away the loose tobacco powder in cigarette rods surface, uses dust exhaust apparatus to collect residual tobacco powder in the aftershaping cylinder that completes.
In technique scheme, the particle diameter of tobacco powder is 10 μ m～100 μ m, and in cigarette rods, the quality of tobacco powder is 0.5g～1.0g.Being shaped as of cigarette rods is cylindrical, square column type or triangle cylindricality.
The New-type cigarette that the present invention produces, comprises cigarette rods and filter rod, and the tobacco powder that cigarette rods is worn into by tobacco leaf is cohered and formed by adhesive, and adhesive is that concentration is the aqueous solution of 1%～3% sodium carboxymethylcellulose.Filter rod is made by acetate fiber.
As shown in Figure 2, specific embodiment 1 is columniform cigarette, and tobacco powder particle diameter is 50 μ M, adopts the aqueous solution of 2% sodium carboxymethylcellulose as adhesive.During production, first make tobacco powder.First use flour mill that tobacco leaf is polished into tobacco powder, tobacco powder crossed to 280 order mesh screens, obtain after tobacco powder that particle diameter is 50 μ M by make tobacco powder put into 3D printer for powder ashtray.Then utilize 3D printer to make cigarette rods: the first step, in the relevant software of computer, design the concrete shape of cylindrical cigarette; Second step, moves from left to right for the powder-laying roller 2 on powder cylinder 1, and the moulding cylinder platform 5 in moulding cylinder 4 sprays the uniform tobacco powder of one deck; The 3rd step, printhead 3 needs the region of moulding to spray the liquid adhesive of one deck on moulding cylinder platform 5 according to specific design, position and shape that liquid adhesive adheres to are identical with the cigarette of design, tobacco powder runs into adhesive and can solidify and cohere rapidly, and does not have the region of adhesive still to keep loose condition (of surface); The 4th step, moulding cylinder platform 5 moves down a segment distance, for the powder-laying roller 2 on powder cylinder 1, moves from left to right, and the moulding cylinder platform 5 in moulding cylinder 4 sprays the uniform tobacco powder of one deck, tobacco powder runs into adhesive and can solidify and cohere rapidly, and does not have the region of adhesive still to keep loose condition (of surface); Repeatedly repeat the 3rd step and the 4th step until printed.In print procedure, printhead 3 sprays liquid adhesive according to the shape of each layer cross section, and tobacco powder solidifies stack after running into liquid adhesive, progressive, forms cigarette rods entity.After cigarette rods printing shaping, by its standing 1 to 5 minute, make between the tobacco powder of moulding and adhesive by cross-linking reaction the effect such as molecular force completion of cure.Then with fan, blow away the loose tobacco powder at cigarette rods solid object surface, after cigarette rods bottom affixes the cylindrical filter rod identical with its shape, obtain New-type cigarette.Residue tobacco powder can be collected with dust exhaust apparatus, is recycled.
As shown in Figure 3, specific embodiment 2 is triangle cylindricality cigarette, and tobacco powder particle diameter is 10 μ M, adopts the aqueous solution of 1% sodium carboxymethylcellulose as adhesive.During production, first make tobacco powder.First use flour mill that tobacco leaf is polished into tobacco powder, tobacco powder crossed to 1600 order mesh screens, obtain after tobacco powder that particle diameter is 10 μ M by make tobacco powder put into 3D printer for powder ashtray.Then utilize 3D printer to make cigarette rods: the first step, in the relevant software of computer, design the concrete shape of triangle cylindricality cigarette; Second step, moves from left to right for the powder-laying roller 2 on powder cylinder 1, and the moulding cylinder platform 5 in moulding cylinder 4 sprays the uniform tobacco powder of one deck; The 3rd step, printhead 3 needs the region of moulding to spray the liquid adhesive of one deck on moulding cylinder platform 5 according to specific design, position and shape that liquid adhesive adheres to are identical with the cigarette of design, tobacco powder runs into adhesive and can solidify and cohere rapidly, and does not have the region of adhesive still to keep loose condition (of surface); The 4th step, moulding cylinder platform 5 moves down a segment distance, for the powder-laying roller 2 on powder cylinder 1, moves from left to right, and the moulding cylinder platform 5 in moulding cylinder 4 sprays the uniform tobacco powder of one deck, tobacco powder runs into adhesive and can solidify and cohere rapidly, and does not have the region of adhesive still to keep loose condition (of surface); Repeatedly repeat the 3rd step and the 4th step until printed.In print procedure, printhead 3 sprays liquid adhesive according to the shape of each layer cross section, and tobacco powder solidifies stack after running into liquid adhesive, progressive, forms cigarette rods entity.After cigarette rods printing shaping, by its standing 1 to 5 minute, make between the tobacco powder of moulding and adhesive by cross-linking reaction the effect such as molecular force completion of cure.Then with fan, blow away the loose tobacco powder at cigarette rods solid object surface, after cigarette rods bottom affixes the triangle cylindricality filter rod identical with its shape, obtain New-type cigarette.Residue tobacco powder can be collected with dust exhaust apparatus, is recycled.
As shown in Figure 4, specific embodiment 3 is square cylindricality cigarette, and tobacco powder particle diameter is 100 μ M, adopts the aqueous solution of 3% sodium carboxymethylcellulose as adhesive.During production, first make tobacco powder.First use flour mill that tobacco leaf is polished into tobacco powder, tobacco powder crossed to 150 order mesh screens, obtain after tobacco powder that particle diameter is 100 μ M by make tobacco powder put into 3D printer for powder ashtray.Then utilize 3D printer to make cigarette rods: the first step, in the relevant software of computer, design the concrete shape of triangle cylindricality cigarette; Second step, moves from left to right for the powder-laying roller 2 on powder cylinder 1, and the moulding cylinder platform 5 in moulding cylinder 4 sprays the uniform tobacco powder of one deck; The 3rd step, printhead 3 needs the region of moulding to spray the liquid adhesive of one deck on moulding cylinder platform 5 according to specific design, position and shape that liquid adhesive adheres to are identical with the cigarette of design, tobacco powder runs into adhesive and can solidify and cohere rapidly, and does not have the region of adhesive still to keep loose condition (of surface); The 4th step, moulding cylinder platform 5 moves down a segment distance, for the powder-laying roller 2 on powder cylinder 1, moves from left to right, and the moulding cylinder platform 5 in moulding cylinder 4 sprays the uniform tobacco powder of one deck, tobacco powder runs into adhesive and can solidify and cohere rapidly, and does not have the region of adhesive still to keep loose condition (of surface); Repeatedly repeat the 3rd step and the 4th step until printed.In print procedure, printhead 3 sprays liquid adhesive according to the shape of each layer cross section, and tobacco powder solidifies stack after running into liquid adhesive, progressive, forms cigarette rods entity.After cigarette rods printing shaping, by its standing 1 to 5 minute, make between the tobacco powder of moulding and adhesive by cross-linking reaction the effect such as molecular force completion of cure.Then with fan, blow away the loose tobacco powder at cigarette rods solid object surface, after cigarette rods bottom affixes square cylindricality filter rod identical with its shape, obtain New-type cigarette.Residue tobacco powder can be collected with dust exhaust apparatus, is recycled.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, invention also intention comprise these changes and modification interior.The content not being described in detail in this description belongs to the known prior art of professional and technical personnel in the field.
Claims (5)
1. a cigarette preparation method of using 3D printing technique, is characterized in that comprising the following steps:
A. after tobacco leaf being milled in pulverizer to powder, cross mesh screen, obtain tobacco powder, add tobacco powder to 3D printer supplying in powder cylinder (1);
B. operate graph data software in computer, design the shape of cigarette rods;
C. powder-laying roller (2) moves from left to right, makes to enter moulding cylinder (4) for the tobacco powder in powder cylinder, at the upper one deck tobacco powder layer that forms of moulding cylinder platform (5);
D. printhead (3) sprays adhesive towards the tobacco powder layer of moulding cylinder platform (5), the attachment position of adhesive and shape are identical with the bottom cross sectional shape of the cigarette rods shape designing on computer, and the tobacco powder that touches adhesive solidifies and coheres rapidly;
E. moulding cylinder platform (5) moves down a segment distance, then powder-laying roller (2) moves from left to right, for the inner tobacco powder of powder cylinder (1), form the tobacco powder layer of one deck at moulding cylinder platform (5), the tobacco powder that touches adhesive solidifies and coheres rapidly again;
F. printhead (3) sprays adhesive to the tobacco powder layer on moulding cylinder platform (5), and the shape of the attachment position of adhesive is identical with the correspondence position cross sectional shape of the cigarette rods shape designing on computer;
G. repeating step e and step f repeatedly, until printed;
H. the cigarette rods that standing printing completes, makes cigarette rods completion of cure;
I. remove the loose tobacco powder in cigarette rods surface, residual tobacco powder after collection completes;
J. the bottom at cigarette rods affixes the filter rod that shape matches.
2. the cigarette preparation method of utilization according to claim 1 3D printing technique, is characterized in that step I blows away the loose tobacco powder in cigarette rods surface with fan.
3. the cigarette preparation method of utilization according to claim 1 3D printing technique, is characterized in that step I used dust exhaust apparatus to collect residual tobacco powder in the aftershaping cylinder (4) that completes.
4. the cigarette preparation method of utilization according to claim 1 3D printing technique, the particle diameter that it is characterized in that tobacco powder is 10 μ m～100 μ m, in cigarette rods, the quality of tobacco powder is 0.5g～1.0g.
5. the cigarette preparation method of utilization according to claim 1 3D printing technique, is characterized in that being shaped as of cigarette rods is cylindrical, square column type or triangle cylindricality.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310269937.4A CN103300472B (en) | 2013-06-28 | 2013-06-28 | Novel cigarette production method applying 3D (3-dimensional) printing technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310269937.4A CN103300472B (en) | 2013-06-28 | 2013-06-28 | Novel cigarette production method applying 3D (3-dimensional) printing technology |
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| CN103300472A CN103300472A (en) | 2013-09-18 |
| CN103300472B true CN103300472B (en) | 2014-08-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018143934A1 (en) * | 2017-01-31 | 2018-08-09 | Hewlett-Packard Development Company, L.P. | Customized production |
| WO2021037924A1 (en) * | 2019-08-29 | 2021-03-04 | Jt International Sa | Extrudable aerosol-generating tobacco-containing substrate and method of manufacture |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016154850A1 (en) * | 2015-03-30 | 2016-10-06 | 北京大学口腔医院 | Three-dimensional printing method, apparatus and printer |
| RU2713492C2 (en) * | 2015-07-21 | 2020-02-05 | Филип Моррис Продактс С.А. | Tobacco products production method |
| CN108606361A (en) * | 2018-05-23 | 2018-10-02 | 广西中烟工业有限责任公司 | A kind of heating with 3D printing plug configuration is not burnt cigarette |
| CN109156888A (en) * | 2018-06-04 | 2019-01-08 | 河南中烟工业有限责任公司 | A kind of 3D printing cigarette and preparation method thereof |
| CN109907366A (en) * | 2019-01-04 | 2019-06-21 | 广西中烟工业有限责任公司 | A kind of preparation method and duct customized type harm reduction filter tip of duct customized type harm reduction filter tip |
| CN109998163B (en) * | 2019-05-05 | 2023-06-20 | 云南中烟工业有限责任公司 | Cigarette with various cross-sectional shapes and preparation method thereof |
| GB202005970D0 (en) * | 2020-04-23 | 2020-06-10 | Nicoventures Trading Ltd | Aerosol-generating components and methods of preparing the same |
| GB202005966D0 (en) * | 2020-04-23 | 2020-06-10 | Nicoventures Trading Ltd | Systems and process for preparing aerosol-generating components |
| CN113334762A (en) * | 2021-04-29 | 2021-09-03 | 上海宝高文化传播有限公司 | Efficient recycling method for coffee grounds based on additive manufacturing |
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| US7962237B2 (en) * | 2008-08-06 | 2011-06-14 | Objet Geometries Ltd. | Method and apparatus for optimizing a scanning plan in three-dimensional printing |
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| CN101168149A (en) * | 2007-11-16 | 2008-04-30 | 山东中烟工业公司 | Paper-making method reproduced tobacco leaf tobacco powder spraying type coating machine |
| CN103061194A (en) * | 2012-12-11 | 2013-04-24 | 金红叶纸业集团有限公司 | Paper producing method and paper |
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| CN103300472A (en) | 2013-09-18 |
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