첨부한 논문 'Permeability Properties of Paper Materials'는 핀란드 Jyväskylä 대학교 Marko Rasi의 박사논문으로 종이 재료에 따른 투과특성에 대해 심층적인 연구내용을 담고 있습니다.

종이의 Permeability와 Thickness의 상관성에 대한 데이터 또한 보여주고 있습니다.

논문 목차는 아래와 같습니다. 본 주제에 관심있으신 분은 첨부 화일을 다운로드하여 보시기 바랍니다.

INTRODUCTION
1 BACKGROUND
1.1 Wood material
1.2 Fibre network
1.3 Pore volume
1.3.1 Intrafibre pores
1.3.2 Interfibre pores
1.3.3 Response of porosity to compression
1.4 Flow in fibrous media
1.4.1 Experimental results for fibrous media
1.4.2 Experimental results for paper materials
1.4.2.1 Effects of fibre and stock properties
1.4.2.2 Effects of fibre web properties
1.4.2.3 Interaction of fibre web and pressing surface
1.4.2.4 Interaction of fluid flow with fibre web
2 MODELS FOR PERMEABILITY OF FIBRE NETWORKS
2.1 Simple models of permeability
2.2 Three-dimensional models and images of fibre networks
2.3 Simulation results
3 THE PERMEABILITY DEVICE
3.1 General structure of the device
3.2 Main components
3.3 Hydraulic cylinder
3.4 Pressing chambers
3.5 Pressing surfaces
3.6 Water circulation
3.7 Transducer system
3.8 Assembly of the device
4 MEASUREMENT TECHNIQUES
4.1 Techniques of thickness measurement
4.2 Surface contact of the sample
4.3 Techniques of pressure measurements
5 ACCURACY OF THE MEASUREMENT SYSTEM
6 MEASUREMENT PROCEDURE
6.1 Preparations
6.3 Permeability as a function of fibre volume fraction
6.4 Permeability as a function of flow velocity
7 CHARACTERISATION OF THE SAMPLES
7.1 Sample materials
7.2 Characterisation methods
7.3 Chemical and mechanical pulp
7.4 Beaten kraft
7.5 Fractionated TMP
7.6 Kraft- groundwood mixtures
7.7 Mixtures with non-wood materials
8 RESULTS
8.1 expressions for permeability results
8.1.1 Measurement resolution and sample uniformity
8.2 The effect of basis weight
8.2.1 Basis weight effect in the literature
8.2.2 Conclusions concerning the effect of basis weight
8.3 The effect of sample composition
8.3.1 The effect of beating

8.3.2 The effect of mechanical pulp fines
8.3.3 Mixture of chemical and mechanical pulp
8.3.4 Mixtures with non-wood materials
8.3.5 Permeability of a press felt
8.3.6 Summary of different sample compositions
8.3.7 Discussion with respect to previous results on paper permeability
8.4 Permeability as a function of flow velocity
8.4.1 Conclusions on the flow velocity effects
9 CONCLUSIONS
APPENDIX 1
APPENDIX 2
10 REFERENCES

(출처:https://jyx.jyu.fi/dspace/bitstream/handle/123456789/42954/978-951-39-5575-5.pdf?sequence=1)