WO2022218008A1 - 具有微空腔结构过滤嘴棒和过滤棒打孔控制系统 - Google Patents

具有微空腔结构过滤嘴棒和过滤棒打孔控制系统 Download PDF

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Publication number
WO2022218008A1
WO2022218008A1 PCT/CN2022/074338 CN2022074338W WO2022218008A1 WO 2022218008 A1 WO2022218008 A1 WO 2022218008A1 CN 2022074338 W CN2022074338 W CN 2022074338W WO 2022218008 A1 WO2022218008 A1 WO 2022218008A1
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Prior art keywords
fiber
tow
filter rod
filter
laser
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PCT/CN2022/074338
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English (en)
French (fr)
Inventor
梅林�
梅笑雨
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南京英伟思特科技发展有限公司
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Publication of WO2022218008A1 publication Critical patent/WO2022218008A1/zh

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    • 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
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • 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
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A24D3/063—Use of materials for tobacco smoke filters characterised by structural features of the fibers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B23K26/382—Removing material by boring or cutting by boring

Definitions

  • the invention belongs to the technical field of cigarette manufacture, and in particular relates to a filter rod with a micro-cavity structure and a filter rod punching control system.
  • the processing of filter rods for cigarettes is to stretch the fiber tow for primary opening, secondary opening (including opening nozzle, feeding roller, expansion roller), tertiary opening, glycerin spray, output roller, catcher. Filament, forming, bonding and cutting to form a rod-shaped filter, in which the tow opening is completed by a three-stage opening process and corresponding components.
  • the typical model is the KDF2 filter forming machine made by HAUNI, Germany.
  • the fibers are in a state of pulling and sticking to each other, and the fibers arranged in the mesh are used to filter the harmful aerosols in the smoke, and the fibers arranged in the mesh are used to filter the harmful aerosols in the smoke.
  • Intercept the flowing smoke reduce the speed of the smoke, accelerate the deposition of tar, and achieve the purpose of removing harmful substances, reducing irritation, and improving the quality of cigarettes.
  • the dense tow fibers can significantly reduce harmful components, but also make The aroma of cigarettes is significantly reduced, which is also an undesired result of the cigarette process.
  • the purpose of the present invention is to provide a filter rod with a micro-cavity structure, so as to overcome the above-mentioned defects in the prior art.
  • the present invention provides a filter rod with a micro-cavity structure, which is mainly formed by wrapping the tow after opening, and the tow after opening has several cavities or holes burned by a laser.
  • the invention relates to a filter rod processing technology, which includes the opening process of a plurality of tows, and also includes a laser drilling process, and the laser drilling process is arranged in the opening process of the fiber tow.
  • the filter rod processing process specifically includes: primary opening of fiber tow, secondary opening of fiber tow, fiber tow stretching, fiber tow expansion, tertiary opening of fiber tow, Glycerol spraying, filament capturing, filter tip forming, filter tip bonding, filter tip cutting into rod-shaped filter tip, the laser drilling process is set in the secondary opening process of the fiber tow, between the opening nozzle and the expansion roller.
  • the laser drilling process is set within the three-stage opening process of the fiber tow, and between the expanding roller and the glycerin spraying process.
  • the laser drilling process is arranged in the first-level opening process of the fiber tow, and between the tow drawing process and the opening nozzle.
  • a filter rod punching control system controls a laser light source to work according to a synchronizing signal, and the emitted laser is projected onto tow fibers through a converging device to burn and burn to form holes, thereby forming a filter rod with discontinuous tiny holes inside.
  • the synchronization signal is a speed and position signal of the filter cutter.
  • the laser focusing device forms a circular focusing spot and a strip focusing spot and then irradiates the tow fiber.
  • the diameter of the circular focusing spot is 0.5mm--2mm.
  • the strip-shaped focusing spot has a length of 1 mm-5 mm and a width of 0.1-0.3 mm, and the longitudinal length of the strip-shaped focusing spot is perpendicular to the running direction of the tow.
  • the tow fiber By using a high-energy laser to set a certain number of holes on the unfolding surface of the tow fiber after opening and expansion, after the tow fiber is rolled into a filter rod, several tiny cavities are formed inside the filter rod, and the tow fiber is formed. Or for several holes on the unfolded surface of the fiber paper, the sum of the hole area per unit length is greater than or equal to 8% of the unfolded surface of the tow fiber, and less than or equal to 40% of the unfolded surface of the tow fiber.
  • the total area of the holes in the unit length is preferably greater than or equal to 15% of the unfolded surface of the tow fibers, and less than or equal to 30% of the unfolded surface of the tow fibers.
  • the existence of the tiny cavity changes the distribution of the fibers inside the filter, and changes the running direction of the internal smoke flow of the conventional cigarette filter for decades. Due to the expansion pressure of the air flow, the pressure of the smoke in the cavity is reduced. , The flow rate is slowed down, so that the filtering characteristics of the filter for larger tar particles can be enhanced, so that the content of harmful substances can be further reduced.
  • the reduction of the number of fibers in the cross section of the filter can reduce the loss of tobacco aroma filtration and interception, which can not only increase the filterability and reduce the harm of the cigarette, but also improve the smoking taste of the cigarette, increase the tobacco aroma and reduce the bad irritation.
  • Different from the technical effect of ordinary filters there is no need to add activated carbon or other porous materials for smoke filtration and improvement, and the cost is low.
  • the speed of the smoke flowing through the filter is reduced, which is conducive to further reducing the temperature of the smoke and improving the comfort of the oral cavity.
  • the new type of tobacco cigarettes have a high temperature of the smoke.
  • the use of the cavity filter can significantly reduce the amount of smoke entering the oral cavity. temperature, simple and practical.
  • the technical solution is simple and quick to implement, and can be installed and implemented on the existing conventional filter forming machine.
  • the cavity filter can be processed by turning on the laser control system, and the conventional filter can be processed by turning off the laser control system.
  • the process conversion process is flexible and convenient.
  • FIG. 1 is a schematic diagram of the background technology.
  • Figure 2 is a schematic diagram of burning a circular hole.
  • Figure 3 is a schematic diagram of the burning strip hole.
  • FIG. 4 is a schematic diagram of the control system of the present invention.
  • FIG. 5 is a schematic diagram of the developed hole of the cauterized sample filter tip of the control system of the present invention.
  • the technical solution relates to a cigarette filter rod and its processing technology, method and related equipment.
  • the main design idea is to use a high-energy laser to set a certain number of holes on the unfolded surface of the tow fiber after opening and expansion, so as to make the tow fiber After being rolled into a filter rod, a number of tiny cavities are formed inside, which can change the distribution of internal fibers, improve the filtering characteristics, and have the technical effects of increasing the filterability, improving the taste of cigarettes, and reducing adverse irritation.
  • a filter rod with a micro-cavity structure a thin rod-like shape formed by wrapping the tow through a specific process and process, with a number of cavities and holes formed by laser sintering inside to improve the filtering characteristics of smoke , Improve cigarette smoking taste and reduce adverse irritation.
  • the laser converging device is arranged in the area where the fiber tow spreads between the secondary opening and the output roll.
  • the laser focusing device is arranged in the area between the secondary opening and the glycerin spray chamber.
  • the laser converging device is arranged in the area between the opening nozzle and the expansion roller.
  • the laser converging device is arranged in the area between the feeding roller and the expanding roller.
  • the control system controls the operation of the laser light source according to the synchronizing signal reflecting the position of the cutting knife, and the emitted laser is cauterized on the tow fiber at a fixed point through the laser convergence device to form holes, thereby forming a filter rod with discontinuous tiny holes inside.
  • the laser processing device includes a laser converging device, and after the incident beam is converged, a circular focusing spot and a strip focusing spot are formed; the distance between the circular focusing spots is preferably 0.5mm--2mm; The wide band is 0.1-0.3mm, and the longitudinal length of the strip focused spot is perpendicular to the running direction of the tow.
  • Supporting devices control system, laser light source, laser convergence device, synchronization signal composition.
  • the laser converging device includes a beam splitting device, at least one focusing lens, or at least one focusing scanning device; the focusing lens receives the output beam of the beam splitting device, and converges the beam to realize punching; the focusing scanning device,
  • a beam splitting device at least one focusing lens, or at least one focusing scanning device; the focusing lens receives the output beam of the beam splitting device, and converges the beam to realize punching; the focusing scanning device.
  • the hole adopts a circular focusing spot diameter of 2mm
  • the hole area within a unit length of 6mm is about 30% of the tow fiber development surface
  • the laser emission time is 10 micrometers. seconds
  • the cautery hole is approximately circular.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

一种具有微空腔结构过滤嘴棒，主要由开松后的卷烟纤维丝束或者纤维纸包卷形成，开松后的丝束上有若干激光灼烧的空腔或者孔洞。通过在开松扩展后的丝束纤维展开面上利用高能激光设定一定数量的孔洞，从而使得该丝束纤维被卷制成过滤嘴棒后其内部形成若干微小空腔，起到改变其内部纤维的分布、改善过滤特性，起到增加过滤性、改善卷烟吸味、降低不良刺激性、降低活性炭使用的技术效果。

Description

具有微空腔结构过滤嘴棒和过滤棒打孔控制系统 技术领域
本发明属于烟支制造技术领域，特别涉及一种具有微空腔结构过滤嘴棒和过滤棒打孔控制系统。
 背景技术
烟用过滤嘴棒的加工是将纤维丝束进行拉伸一级开松、二级开松（包含开松喷嘴、喂料辊、扩展辊）、三级开松、甘油喷淋、输出辊、捕丝、成型、粘合、切割，从而形成棒形的过滤嘴，其中的丝束开松由三级开松过程及相应的部件完成，典型的机型就是德国HAUNI制造的KDF2过滤嘴成型机。
经过上述过程所加工的过滤嘴，其中的纤维与纤维之间为相互拉扯、胶着的状态，并利用该网状排布的纤维对烟气中的有害气溶胶进行过滤，利用网状排布的纤维拦击流动的烟气，降低烟气速度，加快焦油的沉结，达到去除有害物质降低刺激性、提升卷烟品质的目的，然而，丝束纤维的过于致密，尽管可以显著降低有害成分，但也使得卷烟香气明显降低，这也是卷烟工艺不希望看到的结果。
烟草行业还有一种经常使用的过滤技术，就是在过滤嘴内添加活性炭或者其他多孔材料，利用活性炭或者其他多孔材料多孔的特性，增加对有害成分焦油的吸附，然而，活性炭或者其他多孔材料不可避免地对卷烟香气也进行没有选择的吸附，带来不好的技术效果。
公开于该背景技术部分的信息仅仅旨在增加对本发明的总体背景的理解，而不应当被视为承认或以任何形式暗示该信息构成已为本领域一般技术人员所公知的现有技术。
 技术问题
本发明的目的在于提供一种具有微空腔结构过滤嘴棒，从而克服上述现有技术中的缺陷。
 技术解决方案
为实现上述目的，本发明提供了一种具有微空腔结构的过滤嘴棒，主要由开松后的丝束包卷形成，开松后的丝束上有若干激光灼烧的空腔或者孔洞。
一种过滤嘴棒加工工艺，包括若干丝束的开松工序，还包括激光打孔工序，激光打孔工序设置在纤维丝束开松工序之内。
优选地，上述技术方案中，过滤嘴棒加工工序具体包括：纤维丝束一级开松、纤维丝束二级开松、纤维丝束拉伸、纤维丝束扩展、纤维丝束三级开松、甘油喷淋、捕丝、过滤嘴成型、过滤嘴粘合、过滤嘴切割成棒型过滤嘴，激光打孔工序设置在纤维丝束二级开松工序之内，开松喷嘴与扩展辊之间。
优选地，上述技术方案中，激光打孔工序设置在在纤维丝束三级开松工序之内，扩展辊与甘油喷淋工序之间。
优选地，上述技术方案中，激光打孔工序设置在纤维丝束一级开松工序之内，丝束拉伸工序与开松喷嘴之间。
一种过滤棒打孔控制系统，该系统根据同步信号控制激光光源工作，发出的激光经汇聚装置投射到丝束纤维上烧灼形成孔洞，从而形成内部具有非连续微小孔洞的过滤棒。
优选地，上述技术方案中，同步信号为过滤嘴切割刀的速度位置信号。
优选地，上述技术方案中，激光汇聚装置形成圆形聚焦光斑、条形聚焦光斑然后照射在丝束纤维上。
优选地，上述技术方案中，圆形聚焦光斑直径为0.5mm--2mm。
优选地，上述技术方案中，条形聚焦光斑长度为1mm-5mm，宽度0.1-0.3mm，条形聚焦光斑纵向长度与丝束运行方向垂直。
 有益效果
通过在开松扩展后的丝束纤维展开面上利用高能激光设定一定数量的孔洞，从而使得该丝束纤维被卷制成过滤嘴棒后，其过滤棒内部形成若干微小空腔，丝束纤维或者纤维纸展开面上的若干个孔洞， 单位长度内其孔洞面积总和大于等于丝束纤维展开面的8% ，小于等于丝束纤维展开面的40% 。
优选为：单位长度内其孔洞面积总和优选为大于等于丝束纤维展开面的15% ，小于等于丝束纤维展开面的30% 。
该微小的空腔的存在起到改变其内部纤维的分布、改变了常规卷烟过滤嘴几十年来其内部烟气气流的运行方向，因气流扩张压力的作用，使得烟气在空腔内压力得到降低、流速得到减慢，从而能够增强该过滤嘴对较大焦油颗粒的过滤特性，从而可以进一步降低 有害物质的含量。
同时过滤嘴截面内的纤维丝数量的减少，又可以减少对烟草香气的过滤和拦截的损失，既实现增加过滤性降低卷烟的危害性的同时提升改善卷烟吸味增加烟草香气、降低不良刺激性的不同于普通过滤嘴的技术效果，更无需添加活性炭或者其他多孔材料进行烟气过滤和改良，成本低廉。
同时，烟气流过过滤嘴的速度降低，有利于进一步降低烟气温度，改进口腔的舒适性，特别是新型烟草烟支，烟气温度高，采用空腔过滤嘴后可以显著降低进入口腔烟气的温度，简单实用。
本技术方案实施简便快捷，在现有常规的过滤嘴成型机上即可安装实施，开启激光控制系统即可实现空腔过滤嘴的加工，关闭激光控制系统实现常规过滤嘴的加工，工艺转换过程灵活便捷。
 附图说明
图1为背景技术示意图。
图2为灼烧圆形孔的示意图。
图3为灼烧条形孔示意图。
图4为本发明控制系统示意图。
图5为本发明控制系统烧灼样品过滤嘴的展开面孔洞示意图。
 本发明的最佳实施方式
下面对本发明的具体实施方式进行详细描述，但应当理解本发明的保护范围并不受具体实施方式的限制。
除非另有其它明确表示，否则在整个说明书和权利要求书中，术语“包括”或其变换如“包含”或“包括有”等等将被理解为包括所陈述的元件或 组成部分，而并未排除其它元件或其它组成部分。
本技术方案涉及卷烟过滤嘴棒及其加工工艺和方法和相关装备，主要设计思路就是通过在开松扩展后的丝束纤维展开面上利用高能激光设定一定数量的孔洞，从而使得该丝束纤维被卷制成过滤嘴棒后其内部形成若干微小空腔，起到改变其内部纤维的分布、改善过滤特性，起到增加过滤性、改善卷烟吸味、降低不良刺激性的技术效果。
一种具有微空腔结构过滤嘴棒： 由丝束经过包卷，经特定工艺及流程所形成的细棒状，内部具有了利用激光烧灼形成的若干空腔和孔洞，用于改善烟气的过滤特性， 改善卷烟吸味、降低不良刺激性。
加工工艺及流程。
包括纤维丝束一级开松、二级开松、拉伸、扩展、三级开松、甘油喷淋室、捕丝、成型、粘合、切割成棒型过滤嘴。
激光汇聚装置设置在二级开松与输出辊之间的纤维丝束展开的区域。
优选地，所述激光汇聚装置设置在二级开松与甘油喷淋室之间的区域。
进一步优选：激光汇聚装置设置在开松喷嘴、 扩展辊之间的区域。
进一步优选：激光汇聚装置设置在喂料辊、 扩展辊之间的区域。
所述控制系统，根据反映切割刀位置的同步信号，控制激光光源工作、所发出的激光经激光汇聚装置在丝束纤维上定点烧灼形成孔洞， 从而形成内部具有非连续微小孔洞的过滤棒。
所述激光处理装置包括激光汇聚装置，入射光束汇聚后形成圆形聚焦光斑、条形聚焦光斑；圆形聚焦光斑之间优选为0.5mm--2mm；条形聚焦光斑长度优选为1mm-5mm，宽带0.1-0.3mm，条形聚焦光斑纵向长度与丝束运行方向垂直。
配套的装置：控制系统、激光光源、激光汇聚装置、同步信号构成。
所述激光汇聚装置，包括分光装置，至少一个聚焦透镜构成，或者包括至少一个聚焦扫描装置构成；所述聚焦透镜接受分光装置的输出光束，对光束进行汇聚实现打孔；所述聚焦扫描装置，其详细结构参考被本公司申请的另一件中国专利：2019109676934。
样品烟支的感官评析效果
Figure dest_path_image001
。
其中：样品过滤嘴的纤维丝束或者纤维纸展开面上若干个孔洞，孔洞采用圆形聚焦光斑直径2mm，单位长度6mm内其孔洞面积约等于丝束纤维展开面的30% ，激光发射时间10微秒，烧灼孔洞为近似圆形。
前述对本发明的具体示例性实施方案的描述是为了说明和例证的目的。这些描述并非想将本发明限定为所公开的精确形式，并且很显然，根据上述教导，可以进行很多改变和变化。对示例性实施例进行选择和描述的目的在于解释本发明的特定原理及其实际应用，从而使得本领域的技术人员能够实现并利用本发明的各种不同的示例性实施方案以及各种不同的选择和改变。本发明的范围意在由权利要求书及其等同形式所限定。

Claims (13)

  1. 一种具有微空腔结构过滤嘴棒，主要由开松后的纤维丝束或者纤维纸包卷形成，其特征在于：所述开松后的丝束纤维或者纤维纸其展开面上有若干激光灼烧的空腔或者孔洞，经包卷形成过滤嘴棒的内部具有微空腔结构。
  2. 一种过滤嘴棒加工工艺，包括若干丝束的开松工序，其特征在于：还包括激光打孔工序，所述激光打孔工序设置在过滤嘴成型机的纤维丝束或者纤维纸的开松工序之内。
  3. 根据权利要求2所述的过滤嘴棒加工工艺，其特征在于：所述激光打孔工序设置在过滤嘴成型机的纤维丝束或者纤维纸二级开松工序之内，位于开松喷嘴与扩展辊之间。
  4. 根据权利要求2所述的过滤嘴棒加工工艺，其特征在于：所述激光打孔工序设置在过滤嘴成型机的纤维丝束或者纤维纸的三级开松工序之内，位于扩展辊与甘油喷淋工序之间。
  5. 根据权利要求2所述的过滤嘴棒加工工艺，其特征在于：所述激光打孔工序设置在过滤嘴成型机的纤维丝束或者纤维纸一级开松工序之内，位于丝束拉伸工序与开松喷嘴之间。
  6. 一种过滤棒打孔控制系统，其特征在于：该系统根据同步信号控制激光光源工作，发出的激光经汇聚装置投射到开松展开后的纤维丝束或者纤维纸上烧灼形成孔洞，该纤维丝束或者纤维纸被包卷后形成内部具有非连续微小孔洞的过滤棒。
  7. 根据权利要求6所述的过滤棒打孔控制系统，其特征在于：同步信号为过滤嘴切割刀的速度或位置信号。
  8. 根据权利要求6所述的过滤棒打孔控制系统，其特征在于：激光汇聚装置形成圆形聚焦光斑、条形聚焦光斑然后照射在纤维丝束或者纤维纸的上，形成丝束纤维或者纤维纸的展开面上一个面积=光斑宽度D*丝束纤维运行速度V*光斑持续时间T的孔洞。
  9. 根据权利要求8所述的过滤棒打孔控制系统，其特征在于：所述光斑宽度D当聚焦圆形光斑直径d为0.5mm--2mm，D=0.5mm--2mm；
    所形成的孔洞面积=Π*（d/2）*（d/2）+光斑宽度D*丝束纤维运行速度V*光斑持续时间T。
  10. 根据权利要求8所述的过滤棒打孔控制系统，其特征在于：所述光斑宽度D当条形聚焦光斑长度为D=1mm-5mm，宽度d=0.1-0.3mm，条形聚焦光斑纵向长度D与丝束运行方向垂直或者平行。
  11. 所形成的孔洞面积=D*d+D*V*T,或者面积=D*d+d*V*T。
  12. 根据权利要求6-10所述的过滤棒打孔控制系统，其特征在于：激光汇聚装置的聚焦光斑照射在丝束纤维或者纤维纸的上，形成纤维丝束或者纤维纸展开面上若干个孔洞，单位长度内其孔洞面积总和大于等于丝束纤维展开面的8% ，并小于等于丝束纤维展开面的40% 。
  13. 根据权利要求6-10所述的过滤棒打孔控制系统，其特征在于：纤维丝束或者纤维纸展开面上若干个孔洞，单位长度内其孔洞面积总和优选为大于等于丝束纤维展开面的15% ，并小于等于丝束纤维展开面的30%。
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