Papermaking knowledge fill in the blanks-Jinling Paper Machinery

　　1. The modern paper industry is a (capital-intensive), (technology-intensive), (energy-intensive) and (large-scale) industry.

　　2. Printing methods can be divided into two categories: (imprint printing) method and (non-imprint printing) method.

　　3. Packaging materials are divided into four categories: (plastic), (metal), (glass) and (paper and cardboard).

　　4. Fibrillation includes fiber (external fibrillation) and (internal fibrillation).

　　5. The beating methods are divided into (long fiber free beating), (short fiber free beating), (long fiber viscous beating), (short fiber viscous beating).

　　6. There are four types of fiber binding force: (hydrogen bonding force), (chemical main valence bond force), (polar bond attraction) and (surface interweaving force).

　　7. According to the use of paper and the degree of sizing, the paper can be roughly divided into four types: (re-sizing), (medium sizing), (light sizing) and (no sizing).

　　8. There are three sizing methods: (internal sizing), (surface sizing) and (double sizing).

　　9. Color materials are divided into two categories: (pigment) and (dye). Synthetic dyes used in papermaking mainly include (basic dyes), (acid dyes) and (direct dyes).

　　10. Paper dyeing methods are divided into two categories (in-pulp dyeing) and (paper surface dyeing).

　　11. Paper and cardboard papermaking methods can be divided into two categories (dry papermaking) and (wet papermaking).

　　12. According to the type of forming section, the paper machine is divided into (fourdrinier paper machine), (cylinder paper machine), (split paper machine) and (multi-layer forming paper machine).

　　13. White water recovery methods and equipment can be divided into three categories (filtration), (air flotation) and (sedimentation) according to the process principle.

　　14. Papermaking nets are divided into two categories (metal nets) and (plastic nets). Its main performance is (dewatering performance), (paper retention capacity) and (mechanical stability) three functional indicators.

　　15. The dehydration mechanism of the press section is divided into (lateral dehydration mechanism) and (vertical dehydration mechanism). The pressure in the nip is mainly composed of (mechanical pressure) and (fluid pressure).

　　16. There are two ways to dry the paper web in the dryer section (convection drying) and (contact drying).

　　17. Commonly used paper reels are (shaft type) and (roll type). (Fill in the blanks of papermaking knowledge)