Resin tapping in Lithuania

1. Asta Aleksejūnaitė Resin tapping inLithuania

2. Resin tapping • Resin is a hydrocarbon secretion of many plants (particularly coniferous trees). • Resin tapping - it is regular demanding of healthy trees stems before the final cutting in case to receive resin products.

3. World history • The resin tapping begun 3 000 years ago in Greece (Pistacia terebinthus L.); • The French begin to use coniferous for resin tapping in IV century; • In XIV century the resin tapping become the industrial in Spain, France, Portugal; • In XVIII century North America become the most important resin producer in the world; • The resin tapping spread over the world in XIX – XX century, except the Canada and Scandinavian countries.

4. Question • Why resin tapping was not popular in these countries?

5. Lithuanian history • Resin tapping started in 1915. • The special chemical forest enterprises were established in 1949.

6. Resin tapping technologies • Depth of the strip; • Corner; • Step; • Width of the wound; • Pause of the strip; • Method of resin tapping.

7. Depth of the strip • Deep – over the 5 mm; • Shallow – up to the 5 mm. • Optimal – 4 - 5 mm.

8. Methods of resin tapping • Going up; • Going down.

9. Resin tapping systems • classical (simple); • chemical: Sulphuric acid; Bleatch; Feeding yeast.

10. Wound marking • Marking the place were the wound strips should start and stop on the stem.

11. Bark scraping

12. Chamfers tapping

13. Collectors 1

14. Collectors 2

15. Common cutter

16. Chemical cutter

17. Knifes

18. Resin tapping

19. Task • Find the ways where the resin products could be used.

20. Amber • Amber is fossil tree resin, which is appreciated for its color and beauty. Good quality amber is used for the manufacture of ornamental objects and jewellery.

21. The products of resin