11. Thermoformed container according to claim 6, characterized in that said collar (10) is internally threaded to receive a lid, and that it forms a section directed upwards, so that it forms an extension of the container.

12. Thermoformed container according to claim 4, characterized in that the sealing face (7) is arranged on a sealing ridge, preferably between said wall section (4) and an upper wall section (14).

13. Thermoformed container according to claim 12, characterized in that the wall section (4) passes in the main directly into the sealing ridge.

14. Thermoformed lid (20) of thin-walled plastic, with a material thickness (t) of between 0.1 and 2.0 mm, and for a container according to claim 1, comprising a closure part (22) and a lid part (24) with an underside (24a) and an upper side (24b), the closure part (22) comprising threads (26), and an annular sealing face (28) characterized in that the closure part (22) comprises a wall section (32) arranged inside said threads (26), which wall section extends a substantial distance downwards from an upper face (34) of the lid.

15. Thermoformed lid according to claim 14, characterized in that the material thickness of the threads (5) is essentially the same as the material thickness for the lid part (24).

16. Thermoformed lid according to claim 14, characterized in that the closure part (22) comprises a sealing face (28) arranged in a transition zone between the lid part (24) and the closure part (22).

17. Thermoformed lid according to claim 16, characterized in that the sealing face (28) is arranged rotationally symmetrically around an axis of symmetry (9).

18. Thermoformed lid according to claim 17, characterized in that said sealing face (28) consists of an annular section, which projects below the underside (24a) of the lid

part, at least in the area adjacent to said annular section (28), so that a transition zone (30) is formed, which creates stiffening.

19. Thermoformed lid according to claim 18, characterized in that said wall section (32) passes in the main directly into said annular section (28).

20. Thermoformed lid according to claim 19, characterized in that said wall section (32) extends between said annular section (28) and the upper part (34) of the lid.

21. Thermoformed lid according to claim 20, characterized in that the threads (26) are arranged in a collar, which extends downwards from said upper part (34), and which at a distance encloses said wall section (32).

22. Thermoformed lid according to claim 16, characterized in that said sealing face (28) consists of an annular section, which projects outside, and preferably above, the underside (24a) of the lid part.

23. Thermoformed container according to any of claims 1-13, characterized by a lid according to any of claims 14-22.

24. Thermoformed container according to claim 23, characterized in that the lid and container are each provided with a lug (47A, 47B), which is intended for welding together.

25. Thermoformed container according to claim 24, characterized by a perforation line (49) for being able to tear off said lugs (47A, 47B).

26. Thermoformed container according to claim 5, with a lid according to claim 19, characterized in that the wall section (32) of the lid has a smaller outward inclination relative to the vertical plane than a corresponding wall section (14) of the container.

27. Thermoformed container according to claim 5, with a lid according to claim 19, characterized in that the wall section (32) of the lid has the same outward inclination relative to the vertical plane as a corresponding wall section (14) of the container.

28. Thermoformed container with lid according to claim 26, characterized in that the wall section (32) of the lid has a longer vertical extension than a corresponding wall section (14) of the container, due to which the lid can be screwed onto the container

so that said annular section (28) of the lid is pressed together with the sealing face (7) of the container.

29. Method for the manufacture of a container and/or lid according to any of the above claims, wherein, a thin-walled plastic material in sheet form being used as the starting material, and thermoforming by means of a vacuum or pressure is used in connection with manufacture, characterized in that the ready-formed pieces are first punched and then rotated out of the forming tool.

30. Method for the manufacture of a container and/or lid according to any of the above claims, wherein, a thin-walled plastic material in sheet form being used as the starting material, and thermoforming by means of a vacuum or pressure is used in connection with manufacture, characterized in that the threaded part of each form in the forming tool is disposed rotatably, so that the ready-formed piece (s) can be ejected together with the sheet from the tool by said part being rotated, the ready- formed piece being lifted straight up out of the form.

31. Method according to claim 30, characterized in that the finished piece is punched out of the material in sheet form following ejection from the forming tool.