Chinese Academy of Sciences

Zhengzhou Tobacco Research Institute of Cntc

China Tobacco Jiangxi Industrial Co., Ltd.

Other

Mingjian Zhang

Bin Li

Yi Zhang

Yaoshuo Sang

Liu Hong

Zhigang Li

Zhenyu Xu

Huiyi Zeng

Binwen Liu

Guocong Guo

Long Zhang

Yong Liu

Nan Deng

Ke Zhang

Le Wang

Bing Wang

Xiaoming Jiang

Bingyang Xu

Xiaoling Tang

Yuhang Fan

Goucong Guo

Min Ji

Guangyang Qiu

Bingxuan Li

Yue Sun

Xiaoping Liu

Ran Chen

Lili Fu

Qi Zhang

Feng Huang

Jiakang Li

Ruilin Hu

Shuang Wang

The present invention provides a system for on-line detecting the package airtightness of cigarette packet, which comprises a first conveyor belt; a plurality of detection box bases arranged on the first conveyor belt at preset intervals, wherein the cigarette packets are sequentially conveyed onto each detection box base; a second conveyor belt arranged above the first conveyor belt, and the central plane of the second conveyor belt being in coincide with the central plane of the first conveyor belt; a plurality of detection box covers arranged on the second conveyor belt at preset intervals, wherein each detection box cover is provided with a slit on one side face, and the detection box cover positioned on the lower end face of the second conveyor belt is cooperated with the detection box base directly below the second conveyor belt during the detection; and a detection probe aligned with the slit during the detection so as to detect the package airtightness of the cigarette packet positioned within the detection box cover through the slit. The detection system can detect the package airtightness of the cigarette packet on line packet by packet at high throughout, thereby realizing on-line quality control.

System for online testing of packaging tightness of cigarette boxes

The application proposes a non-destructive testing method for the sealing degree of the small cigarette box packaging, which includes placing the small cigarette box to be tested in an airtight chamber, using a balance cabin to quickly form a stable negative pressure in the airtight chamber; The pressure change of the sealed chamber is continuously measured until equilibrium, and the data model is analyzed and established by using Darcy's law, Fick's diffusion law and the physical process of molecular kinetic theory. Through the non-destructive testing method for the sealing degree of the small cigarette box packaging of the present invention, the traditional destructive measurement (damaged small box packaging) for measuring the sealing degree of cigarette small box is changed into non-destructive testing; The test results have specific physical meaning; The test time of a single sample is reduced to ⅕ of the time of destructive test.

Non-destructive testing method for tightness degree of small cigarette box packaging

The present disclosure has provided an automatic multichannel apparatus for assessing hot coal fallout propensity of burning cigarettes and an assessing method thereof. The apparatus comprises a multichannel rotary plate unit, an automatic supplying unit for cigarette samples, an automatic ignition and burning line detection unit for cigarette samples, a cigarette holding and force applying unit, an automatic hot coal fallout detection and removal unit, a smoke collecting unit during suction, a suction unit, a gas exhaust unit arranged in a main frame, and an electric circuit and air path control unit for controlling actions and processes of the above units. The apparatus operates based on certain steps and performs automatic ignition and burning line detection on cigarette samples inserted into a rotary plate in sequence. A controllable external force is applied to the cigarettes during burning and suction, and hot coal fallout propensity of this kind of cigarette is detected by hot coal fallout occurrence of multiple cigarettes. The apparatus according to the present disclosure can improve test repeatability and working efficiency.

Automatic multichannel apparatus for assessing hot coal fallout propensity of burning cigarettes and assessing method thereof

The present disclosure provides a method for assessing hot coal fallout propensity of burning cigarettes based on human behavior features of ash-tapping action. The method is characterized in that the method is accomplished through an apparatus for detecting hot coal fallout propensity based on human behavior features of ash-tapping action, which include behavior features of human action of tapping cigarette ash, features of holding a cigarette, and features of force applying process and other aspects. This method can provide objective and accurate test basis for evaluation of cigarette fallout performance.

Apparatus for assessing hot coal fallout propensity of burning cigarettes based on human behavior features of ash-tapping action and method thereof

The present disclosure provides a method for assessing hot coal fallout propensity of burning cigarettes based on human behavior features of ash-flicking action. The method is characterized in that the method is accomplished through an apparatus for detecting hot coal fallout propensity based on human behavior features of ash-flicking action, which include behavior features of human action of flicking cigarette ash, features of holding a cigarette, and features of force applying process and other aspects. This method can provide objective and accurate test basis for evaluation of cigarette fallout performance.

Apparatus for assessing hot coal fallout propensity of burning cigarette based on human behavior features of ash-flicking action and method thereof

The present application discloses a nonlinear optical crystal material, preparation method and application of the nonlinear optical crystal material. A nonlinear optical crystal material, whose molecular formula is GaSe; wherein the crystal structure of said nonlinear optical crystal material belongs to trigonal system, space group R3 with the lattice parameters of a=b=3&#x2dc;4.2 &#x212b;, c=9&#x2dc;10 &#x212b;, &#x3b1;=&#x3b2;=90&#xb0;, &#x3b3;=120&#xb0; and Z=1. The nonlinear optical crystal material has an excellent infrared nonlinear optical performance, whose frequency-doubling intensity can reach 9.3 times of AgGaSwith the same particle size, and it meets type-I phase matching; and its laser damage threshold can reach 7.5 times of AgGaSwith the same particle size. The nonlinear optical crystal material has important application value in the frequency-converters which can be used for frequency doubling, sum frequency, difference frequency, optical parametric oscillation of laser in mid and far infrared waveband, and the like.

Nonlinear optical crystal material, method for preparation thereof, and application thereof

This disclosure provides an optical parametric oscillator, comprising, in a light path, a first lens, a laser crystal, a second lens, a nonlinear optical crystal, and a third lens in this order, wherein an optical parametric oscillation chamber is formed between the second lens and the third lens, and the nonlinear optical crystal is a monoclinic GaScrystal, the space group of the monoclinic GaScrystal is Cc, and the unit cell parameters are a=11.1 &#x212b;, b=6.4 &#x212b;, c=7.0 &#x212b;, &#x3b1;=90&#xb0;, &#x3b2;=121&#xb0;, &#x3b3;=90&#xb0;, and Z=4.

[object Object]

This disclosure provides a second harmonic generator and an optical parametric oscillator, the second harmonic generator and the optical parametric oscillator comprise one or more nonlinear optical frequency conversion crystal and a pump laser source, the nonlinear optical frequency conversion crystal is a monoclinic Ga.sub.2S.sub.3 crystal, the space group of the monoclinic Ga.sub.2S.sub.3 crystal is Cc, and the unit cell parameters are a=11.1.ANG., b=6.4.ANG., c=7.0.ANG., .alpha.=90.degree., .beta.=121.degree., .gamma.=90.degree., and Z=4.

Growing community of inventors

Zhengzhou, China

Mingjian Zhang