WO2024060501A1 - 一种防打刀的聚乳酸纤维滤棒的制备方法 - Google Patents
一种防打刀的聚乳酸纤维滤棒的制备方法 Download PDFInfo
- Publication number
- WO2024060501A1 WO2024060501A1 PCT/CN2023/076437 CN2023076437W WO2024060501A1 WO 2024060501 A1 WO2024060501 A1 WO 2024060501A1 CN 2023076437 W CN2023076437 W CN 2023076437W WO 2024060501 A1 WO2024060501 A1 WO 2024060501A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polylactic acid
- knife
- component
- raw material
- acid fiber
- Prior art date
Links
- 229920000747 poly(lactic acid) Polymers 0.000 title claims abstract description 123
- 239000004626 polylactic acid Substances 0.000 title claims abstract description 121
- 239000000835 fiber Substances 0.000 title claims abstract description 88
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 74
- 239000000956 alloy Substances 0.000 claims abstract description 45
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 45
- 238000005520 cutting process Methods 0.000 claims abstract description 24
- 239000000306 component Substances 0.000 claims description 84
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 claims description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 22
- 235000013773 glyceryl triacetate Nutrition 0.000 claims description 18
- 239000001087 glyceryl triacetate Substances 0.000 claims description 18
- 229960002622 triacetin Drugs 0.000 claims description 18
- 239000002667 nucleating agent Substances 0.000 claims description 16
- 239000008358 core component Substances 0.000 claims description 13
- 238000002425 crystallisation Methods 0.000 claims description 12
- 230000008025 crystallization Effects 0.000 claims description 12
- 238000009987 spinning Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 abstract description 8
- 238000007493 shaping process Methods 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 241000208125 Nicotiana Species 0.000 description 3
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 244000061456 Solanum tuberosum Species 0.000 description 2
- 235000002595 Solanum tuberosum Nutrition 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 229920006221 acetate fiber Polymers 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 235000012015 potatoes Nutrition 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 235000019505 tobacco product Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 241000219310 Beta vulgaris subsp. vulgaris Species 0.000 description 1
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 235000021536 Sugar beet Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 208000035824 paresthesia Diseases 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000029553 photosynthesis Effects 0.000 description 1
- 238000010672 photosynthesis Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000035909 sensory irritation Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0229—Filter rod forming processes
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/025—Final operations, i.e. after the filter rod forming process
- A24D3/0254—Cutting means
Definitions
- the present invention relates to the technical field of cigarette preparation.
- the present invention relates to a method for preparing a knife-resistant polylactic acid fiber filter rod.
- Polylactic acid is produced from lactic acid by fermentation of starch from renewable plant resources, and then prepared into polymer materials through chemical synthesis. It has good recyclability and biodegradability, and has the following characteristics: 1. Using renewable plant resources (corn, wheat, sugar beets, rice, potatoes, potatoes, etc.) and organic waste (corn cobs or roots, stems, leaves, skins, etc. of other crops) as raw materials, we get rid of the need for wood and petroleum resources. 2. It can be completely biodegraded and will naturally decompose into water and carbon dioxide after a certain period of time in the natural environment, without causing environmental pollution.
- renewable plant resources corn, wheat, sugar beets, rice, potatoes, potatoes, etc.
- organic waste corn cobs or roots, stems, leaves, skins, etc. of other crops
- the generated carbon dioxide can be reused through plant photosynthesis and become a
- the eternal, closed carbon cycle system is a veritable "green material"; 3. Compared with the three major synthetic fibers of polyester, nylon, and acrylic fiber, the energy consumption of producing polylactic acid fiber is low, and it is a relatively low resource and environmental load Polymer material; 4. It has good processing performance and can use the melt spinning method of general thermoplastic resin to produce tows.
- polylactic acid fiber has been developed for use in tobacco tow and other fields.
- polylactic acid for clothing The fiber must meet the requirements for fiber spinning, weaving, fabric printing and dyeing, washing, and ironing. It must have high crystallinity, orientation, and mechanical strength. It must be able to withstand temperatures of 80 to 100°C. It must not be soluble in detergent aqueous solutions and dry cleaning solvents. Dissolution and non-swelling require a certain degree of hygroscopicity, and at the same time, the less adsorption of other gaseous substances in the surrounding environment, the better.
- the filter rod rolled from it is non-toxic, tasteless and safe; (2) The tow has good stability and can meet the needs of filter rod forming equipment and Process requirements; (3) It has appropriate rigidity and curling properties, so that it has good elasticity and looseness. With a small amount of tow filling, by adding plasticizer or adhesive, the filter rod can It meets certain hardness, suction resistance and appearance quality requirements, and has a high rod extraction rate; (4) It has sufficient heat resistance, and the filter tip does not collapse or deform during cigarette smoking; (5) It is harmful to smoke The ingredients have high filtration efficiency; (6) It does not affect the sensory quality of cigarettes. Therefore, special spinning and post-processing technology must be developed to meet the requirements for cigarette use.
- Chinese patent invention patent CN111789285A provides a method for preparing polylactic acid cooling modified tow filter rods.
- Polylactic acid masterbatch, SEBS and PP are evenly mixed and then subjected to online melt polymerization at a temperature of 140°C to 200°C through screw extrusion. After extrusion, the polylactic acid tow is obtained by cooling and melt spinning, and is drawn, crimped, dried and shaped.
- the filter rod is formed on a conventional filter rod machine.
- the polylactic acid cooling modified tow filter rod prepared by the above invention has a higher melting point than the traditional polylactic acid tow filter rod, and its heat resistance is greatly improved.
- the above filter rod preparation method still has the following problems: the melting point and crystallinity of PLA are related to the molecular weight of the polymer and the L-lactic acid monomer content; when the crystallinity of polylactic acid is high, the temperature resistance is better, but when the crystallinity is high, it is easy to form nodes.
- the tow is formed into a filter rod, the nodes are randomly distributed in different positions of the tow.
- the object of the present invention is to provide a method for preparing a knife-resistant polylactic acid fiber filter rod, which is simple and convenient.
- a multi-layer structure of skin-core polylactic acid fiber is obtained, and its performance is improved.
- the uniformity of the inner layer structure, that is, the crystallization distribution in the polylactic acid fiber is more uniform, reducing the occurrence of nodes and avoiding damage to the cutter during high-speed cutting, and the cutter uses an alloy knife to effectively ensure that the polylactic acid fiber filter rod can be processed Stable cutting, effectively improving the cutting quality of filter rods.
- a method for preparing a polylactic acid fiber filter rod that is resistant to knife-beating comprises the following steps:
- S1 Obtain polylactic acid with a L-isomer content at a first predetermined value, obtain the first component raw material, and induce crystallization through drafting stress during spinning of the first component raw material to obtain the core component;
- S2 Obtain polylactic acid with a L-isomer content at a second predetermined value to obtain a second component raw material, and add triacetin to the second component raw material to obtain a cortex component;
- S3 Mix the core component and the skin component according to a preset ratio to obtain a polylactic acid fiber tow with a sheath-core structure, and shape several clusters of polylactic acid fiber tow to obtain an original polylactic acid filter rod;
- step S4 after executing step S4, it also includes:
- step S3 when performing step S3, in all the polylactic acid fiber tows of the sheath-core structure of the same batch of original polylactic acid filter rods, the origin, batch and purification steps of all the first component raw materials are the same;
- the second predetermined value is not higher than the first predetermined value.
- a nucleating agent and a dispersing agent are added to the first component raw material and the second component raw material respectively.
- the percentage of the nucleating agent added in the first component raw material to the entire first component raw material is not lower than the percentage of the nucleating agent added to the second component raw material to the entire second component raw material. value;
- the difference between the percentage of the nucleating agent added in the first component of the raw material to the entire first component of the raw material and the percentage of the nucleating agent added to the second component of the raw material to the entire second component of the raw material does not exceed 5%.
- step S1 when performing step S1, ensure that the first component raw material is evenly dispersed before the first component raw material is crystallized to obtain the core component;
- step S2 when performing step S2, before adding triacetin to the second component raw material to obtain the skin component, ensure that the second component raw material is evenly dispersed.
- the core wire component and the skin component are mixed according to a preset ratio, and the composition ratio of the core wire component ranges from 30% to 35%.
- steel knives are respectively installed on both sides of the alloy knife to prevent triacetin from adhering to the side of the alloy knife when the alloy knife cuts the polylactic acid fiber filter rod.
- the steel knife is provided with a sharpening structure for online grinding off triacetin adhering to the side of the steel knife and for keeping the steel knife against the alloy knife when the sharpening structure sharpens the steel knife.
- Stretch structure for occlusion is provided.
- the beneficial effect of the preparation method of a knife-resistant polylactic acid fiber filter rod of the present invention is that it is simple and convenient.
- a multi-layer structure of skin-core polylactic acid fiber is obtained, and its inner layer is improved.
- the uniformity of the structure means that the crystallization distribution in the polylactic acid fiber is more uniform, which reduces the occurrence of nodes and avoids damage to the cutter during high-speed cutting.
- the cutter adopts an alloy knife to effectively ensure that the polylactic acid fiber filter rod can be stably cut. , effectively improving the cutting quality of filter rods.
- Figure 1 is a schematic flow chart of a method for preparing a knife-resistant polylactic acid fiber filter rod of the present invention
- Figure 2 is a schematic structural diagram of a cutter in a method for preparing a knife-resistant polylactic acid fiber filter rod according to the present invention
- Figure 3 is a schematic side view of the cutter structure in a method for preparing a knife-resistant polylactic acid fiber filter rod according to the present invention
- Figure 4 is a schematic side view of a steel knife with a cutter structure in a method for preparing a knife-resistant polylactic acid fiber filter rod according to the present invention.
- Example 1 As shown in Figure 1, a method for preparing a knife-resistant polylactic acid fiber filter rod includes the following steps:
- S1 Obtain polylactic acid with a L-isomer content at a first predetermined value, obtain the first component raw material, and induce crystallization through drafting stress during spinning of the first component raw material to obtain the core component;
- the first predetermined value ranges from 95% to 98%, that is, the first component raw material contains 95% to 98% of the L-isomer (ie, L-lactic acid monomer).
- the melting point of the first component raw material will also be higher.
- low-temperature crystallization is induced by drafting stress.
- the crystallinity of the drawn tow is increased, and the thermal stability of the tow size is improved. It can be curled and shaped well, ensuring that the tow has appropriate rigidity and curling properties, as well as good elasticity and opening properties, and low heat shrinkage properties.
- the second predetermined value is not higher than the first predetermined value; generally speaking, the value range of the second predetermined value is 92% to 95%, and the second component raw material contains 92% to 95% of the levorotatory isomer, And it is necessary to add triacetin to the second component raw material. Under the action of triacetin, the tows swell and bond. Finally, they can be combined with the core component obtained from the first component raw material to obtain a sticky fiber. Well-knotted polylactic acid tows with sheath-core structure.
- S3 Mix the core component and the skin component according to a preset ratio to obtain a polylactic acid fiber tow with a sheath-core structure, and shape several clusters of polylactic acid fiber tow to obtain an original polylactic acid filter rod;
- the impurities are removed by melting and extruding through the screw extruder to the filter, and then spun out through a trilobal spinneret at a certain spinning temperature.
- a process air-conditioning device is used to cool the newly spun filament bundles, and the oil is applied Cover the surface of the tow to improve the post-processing performance.
- the tow is wound at a suitable winding speed and temporarily stored in a silk barrel; in the post-spinning process, the primary fibers spun out of the pre-spinning process are bundled at a certain After being drafted in a water bath at high temperature, it enters the crimping machine and is crimped to achieve the required linear density, crimp number and other indicators.
- each polylactic acid fiber tow is a sheath-core structure tow.
- the original polylactic acid filter rod obtained in step S3 is relatively long and needs to be cut into multiple segments to obtain a polylactic acid fiber filter rod with a predetermined length.
- step S3 when performing step S3, the origin, batch and purification steps of all the first component raw materials in all the sheath-core polylactic acid fiber tows of the same batch of original polylactic acid filter rods are the same;
- the first component raw materials in all polylactic acid fiber tows are all the same; all polylactic acid fiber tows are the same; The second component raw materials in the lactic acid fiber tow are also all the same.
- Alloy knives have greater hardness and better cutting effect on crystal points. They are not prone to damage or breakage, which may cause the slitting machine to stop. The machine has high operating stability and improves the cutting quality of the filter rods.
- the present invention is a method for preparing a knife-resistant polylactic acid fiber filter rod. It is simple and convenient. By controlling the proportion and preparation of polylactic acid raw materials, a multi-layered skin-core polylactic acid fiber is obtained, and the inner layer structure of the polylactic acid fiber is improved. Uniformity, that is, the crystallization distribution in the polylactic acid fiber is more uniform, which reduces the generation of nodes and avoids damage to the cutter during high-speed cutting.
- the cutter uses an alloy knife to effectively ensure that the polylactic acid fiber filter rod can be stably cut, effectively Improve the cutting quality of filter rods.
- Embodiment 2 Still as shown in Figure 1, it is only one embodiment of the present invention. Based on Embodiment 1, in the preparation method of a knife-proof polylactic acid fiber filter rod of the present invention, After step S4, it also includes:
- the filter rod in the cutting part is composed of polylactic acid tows with less crystallization, or the cutting part is compounded of other types of tows, acetate fiber filter rods, and propylene fiber filter rods.
- fragrance can also add fragrance to the composite part.
- the filtration efficiency of aldehydes and ketones in the fragrance components is lower than that of acetate fiber filter rods.
- the increase of cyclopentanone will lead to increased sensory irritation and woody smell, and the increase of phenolic substances will also Will lead to increased woody gas.
- a nucleating agent and a dispersing agent are added to the first component raw material and the second component raw material respectively.
- the nucleating agent can increase the crystallinity of the entire filament bundle, while the dispersant can effectively reduce the probability of crystallization into agglomerates, further making the crystallinity of the polylactic acid fiber bundle high and uniform, so as to facilitate slitting.
- the percentage value of the nucleating agent added in the first component raw material to the entire first component raw material is not less than the percentage value of the nucleating agent added to the second component raw material to the entire second component raw material;
- the difference between the percentage of the nucleating agent added in the first component of the raw material to the entire first component of the raw material and the percentage of the nucleating agent added to the second component of the raw material to the entire second component of the raw material does not exceed 5%.
- step S1 when performing step S1, ensure that the first component raw material is evenly dispersed before the first component raw material is crystallized to obtain the core component;
- step S2 when performing step S2, before adding triacetin to the second component raw material to obtain the skin component, ensure that the second component raw material is evenly dispersed.
- step S3 when executing step S3: the core wire component and the skin component are mixed according to a preset ratio, and the composition ratio of the core wire component ranges from 30% to 35%.
- Embodiment 3 Still as shown in Figures 1 to 4, it is only one of the embodiments of the present invention.
- steel knives 2 are respectively installed on both sides of the alloy knife 1 to prevent triacetin from adhering to the side of the alloy knife 1 when the alloy knife 1 cuts the polylactic acid fiber filter rod 00.
- the steel knife 2 is provided with a sharpening structure 4 for online grinding off triacetin adhering to the side of the steel knife 2 and for keeping the alloy of the steel knife 2 when the sharpening structure 4 sharpens the steel knife.
- Knife 1 performs shielding on extended structure 5.
- the two cutters are arranged on the same cutter shaft 3. When the cutter shaft 3 rotates, the two cutters are driven to cut the polylactic acid fiber filter rod at the same time.
- the alloy knife 1 is round and it is the cutting knife.
- the hardness of the alloy knife 1 is higher than the hardness of the steel knife 2, so that the tow alloy knife 1 is convenient for cutting the crystallized tows in the polylactic acid fiber filter rod as a cutting polylactic acid fiber filter rod.
- the main body of the alloy knife 1 has high hardness, and the blade is not easily damaged when it collides with the crystallization point.
- the steel knife 2 is detachably arranged on the side of the alloy knife 1 to prevent triacetin from adhering to the side of the alloy knife 1 when cutting the polylactide fiber filter rod.
- the steel knife 2 blocks the alloy knife. 1 outside the cutting part, so that triacetin will only stick to the side of the steel knife 2 away from the alloy knife 1, but not to the side of the alloy knife 1.
- the blade 2 of the steel knife 2 is flush with the edge of the alloy knife 1.
- the main reason is that the steel knife 2 completely blocks the part where the side of the alloy knife 1 contacts the polylactide fiber filter rod to prevent triacetin from adhering. to the side of the alloy knife 1.
- the number of the steel knives 2 is two, and the two steel knives are close to the two sides of the alloy knife 1.
- the alloy knife has high hardness and is not easy to be damaged.
- the two steel knives are close to the sides of the alloy knife 1. On the outside, triacetin will only stick to the side of the steel knife away from the alloy knife.
- the sharpening structure 4 will cause the outer edge of the steel knife to be ground away, making the blade of the steel knife shorter. In order to facilitate the sharpening of the steel knife, it is best for the steel knife 2 to be long. Strip blade structure and can extend outward.
- the steel knife 2 includes a plurality of blade units 20, and each of the blade units 20 extends from the cutter shaft 3 to the edge of the alloy knife 1.
- Each blade unit 20 is generally elongated. , but it is not strictly a rectangular structure. The farther away from the cutter axis 3, the wider the blade unit 20, and even both sides of the blade unit 20 can be appropriately curved.
- the cutter shaft 3 is provided with an extension structure 5 for connecting with one end of the blade unit 20 close to the cutter shaft 3 .
- the extension structure 5 includes a A motor, a screw rod coaxially connected to the rotating shaft of the motor, and a blade clip provided on the screw rod for connecting to one end of the blade unit 20 close to the cutter shaft 3 .
- the blade clamp is provided with a screw hole for facilitating the passage of the screw rod, an external thread is provided on the outside of the screw rod, and an internal thread is provided on the inside of the screw hole for mating with the external thread.
- the inner end of the blade unit 20 is clamped by the blade clamp.
- the motor drives the screw to rotate, under the principle of screw transmission, the blade clamp and the blade unit are extended in a direction away from the cutter shaft 3, that is, the blade Unit 20 extends outward.
- the motor is a stepper motor
- the steel knife can set the step value of the stepper motor according to its wear condition, that is, according to the sharpening coefficient between the blade unit 20 and the sharpening structure 4 to ensure that the blade unit 20
- the amount of outward extension and the amount of wear between the blade unit 20 and the sharpening structure 4 ensure a balance.
- a limit block is provided on the screw rod. Once the blade clamp resists the limit block, it means that the outward extension of the blade unit 20 reaches the maximum. At this time, it should be prompted to replace the new blade unit 20. Of course, the motor needs to be reversed at this time. Turn the blade holder to the position closest to the cutter axis 3.
- a limit rod arranged parallel to the screw rod is also provided between the motor and the blade clamp.
- the limit rod is arranged smoothly, and the blade clamp is provided with a limit rod hole to facilitate the passage of the limit rod, so that under the restriction of the limit rod, even if the screw rod rotates, it will not cause the blade unit 20 to rotate; In this way, the blade unit 20 is not only structurally stable, but also can effectively prevent the blade unit 20 from squeezing the side of the alloy knife 1 .
- limiting rod and screw rod are located on both sides of the blade unit 20 respectively.
- the present invention is a method for preparing a knife-resistant polylactic acid fiber filter rod. It is simple and convenient. By controlling the proportion and preparation of polylactic acid raw materials, a multi-layered skin-core polylactic acid fiber is obtained, and the inner layer structure of the polylactic acid fiber is improved. Uniformity, that is, the crystallization distribution in the polylactic acid fiber is more uniform, which reduces the generation of nodes and avoids damage to the cutter during high-speed cutting.
- the cutter uses an alloy knife to effectively ensure that the polylactic acid fiber filter rod can be stably cut, effectively Improve the cutting quality of filter rods.
Landscapes
- Filtering Materials (AREA)
Abstract
一种防打刀的聚乳酸纤维滤棒(00)的制备方法，涉及烟支制备技术领域，包括以下步骤：S1：获取左旋体含量在第一预定值的，第一组分原料聚乳酸，得到芯线组分；S2：获取左旋体含量在第二预定值的第二组分聚乳酸，得到皮层组分；S3：将芯线组分和皮层组分按照预设比例进行混合，得到皮芯型结构的聚乳酸纤维丝束，成型得到原始聚乳酸滤棒；S4：采用合金刀(1)进行分切，得到聚乳酸纤维滤棒(00)。聚乳酸纤维滤棒(00)的制备方法简单方便，通过对聚乳酸原料的比例和制备控制，提高内层结构的均匀性，减少结点的产生，避免在高速切割中造成切刀的损坏，且切刀采用合金刀(1)有效保证可以对聚乳酸纤维滤棒(00)进行稳定切割，有效提高滤棒的切割质量。
Description
本发明涉及烟支制备技术领域，尤其是，本发明涉及一种防打刀的聚乳酸纤维滤棒的制备方法。
聚乳酸（poly lactic acid，PLA）是由可再生植物资源中的淀粉发酵制取乳酸，而后经化学合成制备成高分子材料，具有良好的循环再生性和生物降解性，具有以下特点：1、以可再生的植物资源（玉米、小麦、甜菜、大米、土豆、山芋等）以及有机废弃物（玉米芯或其它农作物的根、茎、叶、皮等）为原料，摆脱了对木材和石油资源的依赖，符合可持续发展的要求；2、能够完全生物降解，在自然环境中经过一定时间会自然分解为水和二氧化碳，不造成环境污染，产生的二氧化碳通过植物光合作用得到重新利用，成为一个永恒的、封闭的碳循环系统，是名副其实的“绿色材料”；3、与涤纶、锦纶、腈纶三大合成纤维相比，生产聚乳酸纤维的能源消耗较低，是一种相对低资源环境负荷的高分子材料；4、具有良好的加工性能，可采用一般热塑性树脂的熔融纺丝方法生产丝束。
目前，聚乳酸纤维已经被开发出用于烟用丝束等领域，但是烟用丝束用聚乳酸纤维和常规的服装用聚乳酸丝束在性能要求上存在很大差别，如服装用聚乳酸纤维必须满足纤维纺制、编织和织物印染、洗涤、熨烫的要求，必须有很高的结晶度、取向度和机械强度，能耐温80～100℃，必须在洗涤剂水溶液和干洗溶剂中不溶解、不溶胀，需要一定的吸湿性，同时对周围环境中的其它气体物质吸附越少越好。但是作为烟用丝束，则需要满足以下要求：（1）由它卷制而成的滤棒无毒、无味、安全性好；（2）丝束稳定性好，能满足滤棒成型设备和工艺要求；（3）具有适宜的刚性和卷曲性能，使之具有良好的弹性和开松性，在较少丝束填充量的情况下，通过添加增塑剂或胶黏剂后，滤棒能满足一定的硬度、吸阻和外观质量要求，有较高的出棒率；（4）具备足够的耐热性，卷烟抽吸过程中，滤嘴不塌陷、变形；（5）对烟气有害成分具有较高的过滤效率；（6）不影响卷烟感官质量。因此，必须开发专用的纺丝及后处理工艺技术，才能满足烟用要求。
例如中国专利发明专利CN111789285A提供一种聚乳酸降温改性丝束滤棒的制备方法，由聚乳酸母粒、SEBS及PP混合均匀后在140℃至200℃温度下在线熔融聚合反应通过螺杆螺旋挤压挤出后冷却熔融纺丝，经过牵伸、卷曲、烘干定型制得聚乳酸丝束，在常规的滤棒机上进行滤棒成型制备而成。上述发明制备的聚乳酸降温改性丝束滤棒比传统的聚乳酸丝束滤棒熔点高，耐热性极大的提高，在加热不燃烧烟草制品中避免了缩头的现象，同时对烟气温度有显著的降低作用，解决了加热不燃烧烟草制品烟气温度高，热刺感强，抽吸舒适性差的难题，适合于工业化生产。
但是上述滤棒制备方法依然存在以下问题：PLA的熔点和结晶度与聚合物的分子量和左旋乳酸单体含量相关；聚乳酸结晶度高时，耐温性较好，但结晶度高时，容易形成结点。在丝束成型为滤棒时，结点随机分布在丝束不同位置，在滤棒卷接分切时，由于滤棒高速运动，由于结点与丝束在切刀受力时的差异，容易造成刀片的豁口甚至断裂，造成卷接机的频繁停机，滤棒横切面不平整，滤棒变形，圆度指标不合；另一方面，由于丝束结晶点较多，滤棒丝束比表面积也有影响，对滤棒过滤效率及香气物质的影响较大，从而造成卷烟感官质量造成较大的影响。
因此为了解决上述问题，设计一种合理的防打刀的聚乳酸纤维滤棒的制备方法对我们来说是很有必要的。
本发明的目的在于提供一种防打刀的聚乳酸纤维滤棒的制备方法，其简单方便，通过对聚乳酸原料的比例和制备控制，得到多层结构的皮芯型聚乳酸纤维，提高其内层结构的均匀性，即聚乳酸纤维中结晶分布更均匀，减少结点的产生，避免在高速切割中造成切刀的损坏，且切刀采用合金刀有效保证可以对聚乳酸纤维滤棒进行稳定切割，有效提高滤棒的切割质量。
为达到上述目的，本发明采用如下技术方案得以实现的：
一种防打刀的聚乳酸纤维滤棒的制备方法，包括以下步骤：
S1：获取左旋体含量在第一预定值的聚乳酸，得到第一组分原料，在第一组分原料进行纺丝时通过牵伸应力诱导结晶，得到芯线组分；
S2：获取左旋体含量在第二预定值的聚乳酸，得到第二组分原料，在第二组分原料中添加三乙酸甘油酯，得到皮层组分；
S3：将芯线组分和皮层组分按照预设比例进行混合，得到皮芯型结构的聚乳酸纤维丝束，将若干簇聚乳酸纤维丝束进行成型得到原始聚乳酸滤棒；
S4：采用合金刀对原始聚乳酸滤棒进行分切，得到聚乳酸纤维滤棒。
作为本发明的优选，执行步骤S4之后，还包括：
S5：对聚乳酸纤维滤棒的切割部位进行滤棒复合。
作为本发明的优选，执行步骤S3时，同一批原始聚乳酸滤棒的所有皮芯型结构的聚乳酸纤维丝束中，所有第一组分原料的产地、批次以及纯化步骤都相同；
同一批原始聚乳酸滤棒的所有皮芯型结构的聚乳酸纤维丝束中，所有第二组分原料的产地、批次以及纯化步骤都相同。
作为本发明的优选，执行步骤S2时，所述第二预定值不高于第一预定值。
作为本发明的优选，执行步骤S1和S2时，分别在第一组分原料和第二组分原料中添加成核剂和分散剂。
作为本发明的优选，第一组分原料中添加的成核剂占整个第一组分原料的百分比值不低于第二组分原料中添加的成核剂占整个第二组分原料的百分比值；
且第一组分原料中添加的成核剂占整个第一组分原料的百分比值与第二组分原料中添加的成核剂占整个第二组分原料的百分比值之差不超过5%。
作为本发明的优选，执行步骤S1时，在第一组分原料结晶得到芯线组分之前，确保第一组分原料分散均匀；
执行步骤S2时，在第二组分原料添加三乙酸甘油酯得到皮层组分之前，确保第二组分原料分散均匀。
作为本发明的优选，执行步骤S3时：将芯线组分和皮层组分按照预设比例进行混合，芯线组分的组成比例范围为30%至35%。
作为本发明的优选，执行步骤S4之前，在合金刀的两侧分别安装钢刀，用于在合金刀对聚乳酸纤维滤棒切割时遮挡三乙酸甘油酯粘连至合金刀侧面。
作为本发明的优选，钢刀处设置有用于在线将粘连在钢刀侧面的三乙酸甘油酯磨掉的磨刀结构和用于在磨刀结构对钢刀进行磨刀时保持钢刀对合金刀进行遮挡的伸展结构。
本发明一种防打刀的聚乳酸纤维滤棒的制备方法有益效果在于：简单方便，通过对聚乳酸原料的比例和制备控制，得到多层结构的皮芯型聚乳酸纤维，提高其内层结构的均匀性，即聚乳酸纤维中结晶分布更均匀，减少结点的产生，避免在高速切割中造成切刀的损坏，且切刀采用合金刀有效保证可以对聚乳酸纤维滤棒进行稳定切割，有效提高滤棒的切割质量。
图1为本发明一种防打刀的聚乳酸纤维滤棒的制备方法的流程示意图；
图2为本发明一种防打刀的聚乳酸纤维滤棒的制备方法中的切刀结构示意图；
图3为本发明一种防打刀的聚乳酸纤维滤棒的制备方法中的切刀结构的侧视结构示意图；
图4为本发明一种防打刀的聚乳酸纤维滤棒的制备方法中的切刀结构的钢刀的侧视结构示意图。
以下是本发明的具体实施例，对本发明的技术方案作进一步的描述，但本发明并不限于这些实施例。
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到：除非另外具体说明，否则在这些实施例中阐述的模块和结构的相对布置不限制本发明的范围。
以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本发明及其应用或使用的任何限制。
对于相关领域普通技术人员已知的技术、方法及系统可能不作详细讨论，但在适当情况下，技术、方法及系统应当被视为授权说明书的一部分。
实施例一：如图1所示，一种防打刀的聚乳酸纤维滤棒的制备方法，包括以下步骤：
S1：获取左旋体含量在第一预定值的聚乳酸，得到第一组分原料，在第一组分原料进行纺丝时通过牵伸应力诱导结晶，得到芯线组分；
一般来说，第一预定值的取值范围为95%至98%，即在第一组分原料中含有95%至98%的左旋体（即左旋乳酸单体），在具有如此高含量的左旋体下，第一组分原料熔点也会较高，在纺丝和后加工过程中，通过牵伸应力诱导低温结晶，牵伸后的丝束结晶度提高，丝束尺寸热稳定性提高，可以较好地卷曲定型，确保丝束具有适宜的刚性和卷曲性能，并具有良好的弹性和开松性，较低的热收缩性能。
S2：获取左旋体含量在第二预定值的聚乳酸，得到第二组分原料，在第二组分原料中添加三乙酸甘油酯，得到皮层组分；
所述第二预定值不高于第一预定值；一般来说，第二预定值的取值范围为92%至95%，在第二组分原料中含有92%至95%的左旋体，且需要在第二组分原料中添加三乙酸甘油酯，在三乙酸甘油酯的作用下，丝束溶胀且粘结，最终可以与第一组分原料得到的芯线组分进行配合，得到粘结良好的皮芯型结构聚乳酸丝束。
S3：将芯线组分和皮层组分按照预设比例进行混合，得到皮芯型结构的聚乳酸纤维丝束，将若干簇聚乳酸纤维丝束进行成型得到原始聚乳酸滤棒；
通过螺杆挤压机熔融挤压至过滤器除去杂质，然后在一定的纺丝温度下通过三叶型喷丝板纺出，采用工艺空调装置对新纺出的丝束进行冷却，将油剂涂覆在丝束表面以改善后加工性能，在适宜的卷绕速率下将丝束卷绕后暂存于盛丝桶中；在后纺工序中，将前纺纺出的初生纤维集束，在一定温度的水浴中牵伸后进入卷曲机卷曲以达到要求的线密度、卷曲数等指标。
需要说明的是，每一根聚乳酸纤维丝束都是一个皮芯型结构的丝束。
S4：采用合金刀对原始聚乳酸滤棒进行分切，得到聚乳酸纤维滤棒。
步骤S3得到的原始聚乳酸滤棒长度较长，需要进行分切成多段，得到预定长度值的聚乳酸纤维滤棒。
需要注意的是：执行步骤S3时，同一批原始聚乳酸滤棒的所有皮芯型结构的聚乳酸纤维丝束中，所有第一组分原料的产地、批次以及纯化步骤都相同；
同一批原始聚乳酸滤棒的所有皮芯型结构的聚乳酸纤维丝束中，所有第二组分原料的产地、批次以及纯化步骤都相同。
也可以理解为：一根原始聚乳酸滤棒中，或者同时进行切割的一批原始聚乳酸滤棒中，所有的聚乳酸纤维丝束中的第一组分原料全部是相同的；所有的聚乳酸纤维丝束中的第二组分原料也全部是相同的。
这样，生产的所有聚乳酸纤维丝束中的芯线组分内的结晶度是均匀分布的，不易产生较大的结块，在分切时不易对合金刀产生撞击损坏。
以及采用合金刀进行分切，合金刀具有较大的硬度，对结晶点的切割效果更好，不易发生损坏折断以至于分切机停机的事情，机器运行稳定性高，提高滤棒切割质量。
本发明一种防打刀的聚乳酸纤维滤棒的制备方法，其简单方便，通过对聚乳酸原料的比例和制备控制，得到多层结构的皮芯型聚乳酸纤维，提高其内层结构的均匀性，即聚乳酸纤维中结晶分布更均匀，减少结点的产生，避免在高速切割中造成切刀的损坏，且切刀采用合金刀有效保证可以对聚乳酸纤维滤棒进行稳定切割，有效提高滤棒的切割质量。
实施例二：仍如图1所示，仅仅为本发明的其中一个的实施例，在实施例一的基础上，本发明一种防打刀的聚乳酸纤维滤棒的制备方法中，在执行步骤S4之后，还包括：
S5：对聚乳酸纤维滤棒的切割部位进行滤棒复合。
实际上，将处于切割部位的滤棒由结晶较少的聚乳酸丝束构成，或者切割部位由其它种类丝束醋纤滤棒、丙纤滤棒，进行复合。
还可以在复合部位进行加香，香味成分中的醛类、酮类物质过滤效率比醋纤滤棒低，环戊酮类的增加会导致感官刺激性、木质气增加，酚类物质的增加也会导致木质气增加。
这样复合滤棒烟香透发性、细腻程度及甜度均有所提升。
而且，执行步骤S1和S2时，分别在第一组分原料和第二组分原料中添加成核剂和分散剂。
成核剂可以增加整个丝束的结晶度，分散剂则可以有效降低结晶成块的概率，进一步使得聚乳酸纤维丝束中结晶度高且均匀，以便于进行分切。
在这里，第一组分原料中添加的成核剂占整个第一组分原料的百分比值不低于第二组分原料中添加的成核剂占整个第二组分原料的百分比值；
且第一组分原料中添加的成核剂占整个第一组分原料的百分比值与第二组分原料中添加的成核剂占整个第二组分原料的百分比值之差不超过5%。
另外，执行步骤S1时，在第一组分原料结晶得到芯线组分之前，确保第一组分原料分散均匀；
执行步骤S2时，在第二组分原料添加三乙酸甘油酯得到皮层组分之前，确保第二组分原料分散均匀。
还有，执行步骤S3时：将芯线组分和皮层组分按照预设比例进行混合，芯线组分的组成比例范围为30%至35%。
实施例三：仍如图1至4所示，仅仅为本发明的其中一个的实施例，在上述任一实施例的基础上，本发明一种防打刀的聚乳酸纤维滤棒的制备方法中，在执行步骤S4之前，在合金刀1的两侧分别安装钢刀2，用于在合金刀1对聚乳酸纤维滤棒00切割时遮挡三乙酸甘油酯粘连至合金刀1侧面。
并且，钢刀2处设置有用于在线将粘连在钢刀2侧面的三乙酸甘油酯磨掉的磨刀结构4和用于在磨刀结构4对钢刀进行磨刀时保持钢刀2对合金刀1进行遮挡的伸展结构5。
将两种切刀设置于同一个切刀轴3上，当切刀轴3转动时，同时带动两种切刀对聚乳酸纤维滤棒进行切割，其中合金刀1为圆形，其才是切割聚乳酸纤维滤棒的主体，故而合金刀1的外侧边缘对聚乳酸纤维滤棒00进行切割；另外，钢刀2设置于合金刀1的外侧，使得钢刀2的刀刃2与合金刀1的边缘齐平，可以同步进行聚乳酸纤维滤棒切合。
在这里，所述合金刀1的硬度高于所述钢刀2的硬度，使得丝束合金刀1方便用于切割所述聚乳酸纤维滤棒中的结晶丝束，作为切割聚乳酸纤维滤棒的主体，合金刀1硬度高，在与结晶点碰撞时刀片不易损坏。
另外，所述钢刀2可拆卸的设置于所述合金刀1侧面，用于阻止切割所述聚乳酸纤维滤棒时三乙酸甘油酯粘连至所述合金刀1侧面，钢刀2遮挡合金刀1切割部分的外侧，使得三乙酸甘油酯只会粘连在钢刀2远离合金刀1的一侧，而不会粘连在合金刀1的侧面。
在这里，钢刀2的刀刃2与合金刀1的边缘齐平，主要是需要使得钢刀2将合金刀1侧面与聚乳酸纤维滤棒接触的部分完全挡死，以防止三乙酸甘油酯粘连至所述合金刀1侧面。
而且所述钢刀2的数量为两个，且两个所述钢刀紧贴于所述合金刀1的两个侧面，合金刀硬度大不易损坏，两个钢刀分别紧贴在合金刀的外侧，使得三乙酸甘油酯只会粘连在钢刀远离合金刀的一侧。
需要注意的是，磨刀结构4会导致将钢刀的外缘磨掉，使得钢刀的刀刃变短，那么为了方便对钢刀进行磨刀，那么钢刀2最好是一根根的长条刀片结构且可以向外侧伸出。
即所述钢刀2包括若干个刀片单元20，且每一个所述刀片单元20均从所述切刀轴3向所述合金刀1的边缘延伸设置，每一个刀片单元20大体呈长条形，但是并不是严格上的矩形结构，应当越远离切刀轴3，刀片单元20越宽，甚至刀片单元20两侧也可以适当弯曲。
在这里，所述切刀轴3上设置有用于与所述刀片单元20靠近所述切刀轴3的一端连接的伸展结构5，所述伸展结构5包括设置于所述切刀轴3外侧的电机、与所述电机的转轴同轴连接的丝杆以及设置于所述丝杆上用于与所述刀片单元20靠近所述切刀轴3的一端连接的刀片夹。
当然，刀片夹上设置有用于方便所示丝杆穿过的丝杆孔，丝杆外侧设置有外螺纹，丝杆孔内侧设置有用于与所述外螺纹配合的内螺纹。
也就是，刀片单元20内端被刀片夹夹紧，电机带动丝杆转动时，在丝杆传动的原理下，使得刀片夹以及刀片单元向远离切刀轴3的方向伸出，也就是使得刀片单元20向外伸展。
在这里，所述电机为步进电机，钢刀可以根据其磨损情况，即根据刀片单元20与磨刀结构4之间的磨刀系数，设定步进电机的步进值，保证刀片单元20向外伸展的伸出量和刀片单元20与磨刀结构4之间的磨损量保证平衡。
当然，丝杆上设置有限位块，一旦当刀片夹抵住限位块，则说明刀片单元20向外的伸展达到最大，此时应当提示更换新的刀片单元20，当然，此时电机需要反向转动使得刀片夹达到最靠近切刀轴3的位置。
另外，所述电机和刀片夹之间还设置有与所述丝杆平行设置的限位杆。限位杆光滑设置，刀片夹上设置有用于方便所示限位杆穿过的限位杆孔，这样在限位杆的限制下，丝杆即便转动，也不会导致刀片单元20发生转动；这样不仅刀片单元20结构稳定，而且可以有效防止刀片单元20对合金刀1侧面产生挤压。
而且，所述限位杆和丝杆分别位于所述刀片单元20两侧。
本发明一种防打刀的聚乳酸纤维滤棒的制备方法，其简单方便，通过对聚乳酸原料的比例和制备控制，得到多层结构的皮芯型聚乳酸纤维，提高其内层结构的均匀性，即聚乳酸纤维中结晶分布更均匀，减少结点的产生，避免在高速切割中造成切刀的损坏，且切刀采用合金刀有效保证可以对聚乳酸纤维滤棒进行稳定切割，有效提高滤棒的切割质量。
本发明不局限于上述具体的实施方式，本发明可以有各种更改和变化。凡是依据本发明的技术实质对以上实施方式所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围。
Claims (10)
- 一种防打刀的聚乳酸纤维滤棒的制备方法，其特征在于：包括以下步骤：S1：获取左旋体含量在第一预定值的聚乳酸，得到第一组分原料，在第一组分原料进行纺丝时通过牵伸应力诱导结晶，得到芯线组分；S2：获取左旋体含量在第二预定值的聚乳酸，得到第二组分原料，在第二组分原料中添加三乙酸甘油酯，得到皮层组分；S3：将芯线组分和皮层组分按照预设比例进行混合，得到皮芯型结构的聚乳酸纤维丝束，将若干簇聚乳酸纤维丝束进行成型得到原始聚乳酸滤棒；S4：采用合金刀对原始聚乳酸滤棒进行分切，得到聚乳酸纤维滤棒。
- 根据权利要求1所述的一种防打刀的聚乳酸纤维滤棒的制备方法，其特征在于：执行步骤S4之后，还包括：S5：对聚乳酸纤维滤棒的切割部位进行滤棒复合。
- 根据权利要求1所述的一种防打刀的聚乳酸纤维滤棒的制备方法，其特征在于：执行步骤S3时，同一批原始聚乳酸滤棒的所有皮芯型结构的聚乳酸纤维丝束中，所有第一组分原料的产地、批次以及纯化步骤都相同；同一批原始聚乳酸滤棒的所有皮芯型结构的聚乳酸纤维丝束中，所有第二组分原料的产地、批次以及纯化步骤都相同。
- 根据权利要求1所述的一种防打刀的聚乳酸纤维滤棒的制备方法，其特征在于：执行步骤S2时，所述第二预定值不高于第一预定值。
- 根据权利要求1所述的一种防打刀的聚乳酸纤维滤棒的制备方法，其特征在于：执行步骤S1和S2时，分别在第一组分原料和第二组分原料中添加成核剂和分散剂。
- 根据权利要求5所述的一种防打刀的聚乳酸纤维滤棒的制备方法，其特征在于：第一组分原料中添加的成核剂占整个第一组分原料的百分比值不低于第二组分原料中添加的成核剂占整个第二组分原料的百分比值；且第一组分原料中添加的成核剂占整个第一组分原料的百分比值与第二组分原料中添加的成核剂占整个第二组分原料的百分比值之差不超过5%。
- 根据权利要求1所述的一种防打刀的聚乳酸纤维滤棒的制备方法，其特征在于：执行步骤S1时，在第一组分原料结晶得到芯线组分之前，确保第一组分原料分散均匀；执行步骤S2时，在第二组分原料添加三乙酸甘油酯得到皮层组分之前，确保第二组分原料分散均匀。
- 根据权利要求1所述的一种防打刀的聚乳酸纤维滤棒的制备方法，其特征在于：执行步骤S3时：将芯线组分和皮层组分按照预设比例进行混合，芯线组分的组成比例范围为30%至35%。
- 根据权利要求1所述的一种防打刀的聚乳酸纤维滤棒的制备方法，其特征在于：执行步骤S4之前，在合金刀的两侧分别安装钢刀，用于在合金刀对聚乳酸纤维滤棒切割时遮挡三乙酸甘油酯粘连至合金刀侧面。
- 根据权利要求9所述的一种防打刀的聚乳酸纤维滤棒的制备方法，其特征在于：钢刀处设置有用于在线将粘连在钢刀侧面的三乙酸甘油酯磨掉的磨刀结构和用于在磨刀结构对钢刀进行磨刀时保持钢刀对合金刀进行遮挡的伸展结构。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211162252.5 | 2022-09-23 | ||
| CN202211162252.5A CN115486556A (zh) | 2022-09-23 | 2022-09-23 | 一种防打刀聚乳酸纤维滤棒的制备 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024060501A1 true WO2024060501A1 (zh) | 2024-03-28 |
Family
ID=84471284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2023/076437 WO2024060501A1 (zh) | 2022-09-23 | 2023-02-16 | 一种防打刀的聚乳酸纤维滤棒的制备方法 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115486556A (zh) |
| WO (1) | WO2024060501A1 (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115486556A (zh) * | 2022-09-23 | 2022-12-20 | 云南中烟工业有限责任公司 | 一种防打刀聚乳酸纤维滤棒的制备 |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5010145A (en) * | 1987-04-21 | 1991-04-23 | Daicel Chemical Industries, Ltd. | Polylactic acid fiber |
| CN1817937A (zh) * | 2006-03-09 | 2006-08-16 | 中国科学院长春应用化学研究所 | 乳酸类聚合物的用途 |
| CN1961765A (zh) * | 2006-11-30 | 2007-05-16 | 中国科学院长春应用化学研究所 | 一种香烟过滤嘴丝束及其制备方法 |
| CN103074716A (zh) * | 2013-02-07 | 2013-05-01 | 中国烟草总公司郑州烟草研究院 | 一种皮芯型聚乳酸烟用丝束和滤棒及其制备方法 |
| CN103088458A (zh) * | 2013-01-27 | 2013-05-08 | 彭荣淮 | 纯聚乳酸丝束及其制备方法以及卷烟过滤嘴 |
| CN103103633A (zh) * | 2013-02-07 | 2013-05-15 | 中国烟草总公司郑州烟草研究院 | 一种改性的聚乳酸烟用丝束和滤棒及其制备方法 |
| CN104532386A (zh) * | 2014-12-18 | 2015-04-22 | 红塔烟草(集团)有限责任公司 | 一种聚乳酸滤棒纸芯及其制造方法 |
| CN106637500A (zh) * | 2016-11-08 | 2017-05-10 | 江南大学 | 一种耐热性高的皮芯结构聚乳酸纤维及其制备方法 |
| CN106637523A (zh) * | 2016-11-08 | 2017-05-10 | 江南大学 | 一种多孔聚乳酸纤维的制备方法 |
| US20170145597A1 (en) * | 2014-04-22 | 2017-05-25 | Fiber Innovation Technology, Inc. | Fibers comprising an aliphatic polyester blend, and yarns, tows, and fabrics formed therefrom |
| DE202019001738U1 (de) * | 2019-04-18 | 2019-05-14 | Wintersun Co., Ltd | Zigarette mit einem aus Polylactid (PLA) aufgebauten Zigaretten-Filter |
| CN110656396A (zh) * | 2019-09-28 | 2020-01-07 | 孔令孝 | 一种聚乳酸烟用丝束、制备方法及其应用 |
| CN110791850A (zh) * | 2019-11-29 | 2020-02-14 | 江南大学 | 一种高强免浆聚乳酸复丝及其制备方法 |
| CN110938905A (zh) * | 2019-11-29 | 2020-03-31 | 江南大学 | 一种高强免浆聚乳酸纱线及其制备方法 |
| CN110959910A (zh) * | 2019-10-31 | 2020-04-07 | 环保知识产权控股有限责任公司 | 一种聚乳酸纤维烟用丝束及其制备方法 |
| CN112251827A (zh) * | 2020-09-10 | 2021-01-22 | 深圳市华远新材料有限公司 | 一种h型皮芯结构聚乳酸丝束及其制备方法 |
| CN113481629A (zh) * | 2021-08-02 | 2021-10-08 | 苏州金泉新材料股份有限公司 | 一种皮芯型聚乳酸烟用丝束及其制备方法 |
| CN115486556A (zh) * | 2022-09-23 | 2022-12-20 | 云南中烟工业有限责任公司 | 一种防打刀聚乳酸纤维滤棒的制备 |
-
2022
- 2022-09-23 CN CN202211162252.5A patent/CN115486556A/zh active Pending
-
2023
- 2023-02-16 WO PCT/CN2023/076437 patent/WO2024060501A1/zh unknown
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5010145A (en) * | 1987-04-21 | 1991-04-23 | Daicel Chemical Industries, Ltd. | Polylactic acid fiber |
| CN1817937A (zh) * | 2006-03-09 | 2006-08-16 | 中国科学院长春应用化学研究所 | 乳酸类聚合物的用途 |
| CN1961765A (zh) * | 2006-11-30 | 2007-05-16 | 中国科学院长春应用化学研究所 | 一种香烟过滤嘴丝束及其制备方法 |
| CN103088458A (zh) * | 2013-01-27 | 2013-05-08 | 彭荣淮 | 纯聚乳酸丝束及其制备方法以及卷烟过滤嘴 |
| CN103074716A (zh) * | 2013-02-07 | 2013-05-01 | 中国烟草总公司郑州烟草研究院 | 一种皮芯型聚乳酸烟用丝束和滤棒及其制备方法 |
| CN103103633A (zh) * | 2013-02-07 | 2013-05-15 | 中国烟草总公司郑州烟草研究院 | 一种改性的聚乳酸烟用丝束和滤棒及其制备方法 |
| US20170145597A1 (en) * | 2014-04-22 | 2017-05-25 | Fiber Innovation Technology, Inc. | Fibers comprising an aliphatic polyester blend, and yarns, tows, and fabrics formed therefrom |
| CN104532386A (zh) * | 2014-12-18 | 2015-04-22 | 红塔烟草(集团)有限责任公司 | 一种聚乳酸滤棒纸芯及其制造方法 |
| CN106637523A (zh) * | 2016-11-08 | 2017-05-10 | 江南大学 | 一种多孔聚乳酸纤维的制备方法 |
| CN106637500A (zh) * | 2016-11-08 | 2017-05-10 | 江南大学 | 一种耐热性高的皮芯结构聚乳酸纤维及其制备方法 |
| DE202019001738U1 (de) * | 2019-04-18 | 2019-05-14 | Wintersun Co., Ltd | Zigarette mit einem aus Polylactid (PLA) aufgebauten Zigaretten-Filter |
| CN110656396A (zh) * | 2019-09-28 | 2020-01-07 | 孔令孝 | 一种聚乳酸烟用丝束、制备方法及其应用 |
| CN110959910A (zh) * | 2019-10-31 | 2020-04-07 | 环保知识产权控股有限责任公司 | 一种聚乳酸纤维烟用丝束及其制备方法 |
| CN110791850A (zh) * | 2019-11-29 | 2020-02-14 | 江南大学 | 一种高强免浆聚乳酸复丝及其制备方法 |
| CN110938905A (zh) * | 2019-11-29 | 2020-03-31 | 江南大学 | 一种高强免浆聚乳酸纱线及其制备方法 |
| CN112251827A (zh) * | 2020-09-10 | 2021-01-22 | 深圳市华远新材料有限公司 | 一种h型皮芯结构聚乳酸丝束及其制备方法 |
| CN113481629A (zh) * | 2021-08-02 | 2021-10-08 | 苏州金泉新材料股份有限公司 | 一种皮芯型聚乳酸烟用丝束及其制备方法 |
| CN115486556A (zh) * | 2022-09-23 | 2022-12-20 | 云南中烟工业有限责任公司 | 一种防打刀聚乳酸纤维滤棒的制备 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115486556A (zh) | 2022-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3005917C (en) | Modified fiber and preparation method therefor | |
| CN113481629B (zh) | 一种皮芯型聚乳酸烟用丝束及其制备方法 | |
| JP6535742B2 (ja) | タバコフィルター用リヨセル素材及びその製造方法 | |
| WO2024060501A1 (zh) | 一种防打刀的聚乳酸纤维滤棒的制备方法 | |
| EP4166701B1 (en) | Lyocell material for tobacco filter and method for preparing same | |
| CN110656400B (zh) | 一种皮芯型聚乳酸烟用丝束、制备方法及其应用 | |
| CN101671858A (zh) | 椰碳纤维的制造方法 | |
| JP6495344B2 (ja) | タバコフィルター用異形断面リヨセル素材及びその製造方法 | |
| WO2024060499A1 (zh) | 一种分组加工的聚乳酸纤维滤棒及其制备方法 | |
| WO2020232931A1 (zh) | 电纺聚丙烯腈纳米纤维连续长线纱的制备方法和应用 | |
| WO2024060502A1 (zh) | 一种耐温性好的聚乳酸纤维滤棒的制备方法 | |
| KR102296584B1 (ko) | 담배필터용 라이오셀 소재 및 그 제조방법 | |
| CN113584629B (zh) | 一种皮芯型烟用丝束及其制备方法 | |
| CN112553741A (zh) | 一种生物可降解聚酯纤维作芯线的雪尼尔纱的制备方法 | |
| CN218052734U (zh) | 一种用于聚乳酸纤维滤棒分切的切刀结构 | |
| CN115338907A (zh) | 一种用于聚乳酸纤维滤棒分切的切刀结构 | |
| EP3202959A1 (en) | Lyocell crimped fiber | |
| JP3832000B2 (ja) | 異形断面再生セルロース繊維およびその製法 | |
| KR101455006B1 (ko) | 담배필터용 라이오셀 소재 및 그 제조방법 | |
| JP3829954B2 (ja) | 中空断面再生セルロース繊維およびその製法 | |
| WO2024060498A1 (zh) | 一种用于聚乳酸纤维滤棒分切的切刀结构 | |
| JP3831999B2 (ja) | 再生セルロース繊維およびその製法 | |
| EP3682052A1 (de) | Polymerfaser mit verbesserter langzeit-dispergierbarkeit | |
| JP3829955B2 (ja) | 染色性に優れた再生セルロース繊維およびその製法 | |
| CN115386976A (zh) | 一种透气排湿良好的功能性纺织新材料 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23866805 Country of ref document: EP Kind code of ref document: A1 |