Die for manufacturing a film by extrusion
AssigneeBlue Solutions
InventorGuy Le Gal
Life of this patent
Estimating the term…
Abstract
The invention relates to a die for manufacturing a film by extrusion, comprising two blocks (100, 200) that define a flow duct (110) between one another, at least one (200) of the two blocks comprising a body (210) that has a deformable portion (220) for modifying the outlet opening of the die, characterized in that means (300) for subjecting the deformable portion to a force comprise at least one bearing part (310) that extends in a general direction (V) perpendicular to the direction (L) of flow at the die outlet and comprises a first end (312) bearing against the deformable portion (220), adjusting means (350, 380) in contact with the bearing part (310) modifying the position of this part.
Claims14
A die for the manufacture of a film by extrusion, comprising two blocks (100, 200) defining between them a flow duct (110), one (200) at least of the two blocks comprising:
- a body (210) having a portion (220) configured to be elastically deformable and extending in the vicinity of the outlet mouthpiece (112) of the duct, and
- adjustable biasing means (300) of this deformable portion (220) of the body (210) to deform the deformable portion (210) to selectively modify the distance between the latter and the other block (100) of the die,
- which biasing means (300) comprise:
- at least one bearing part (310) positioned to be supported on the deformable portion (220) by extending according to a general direction (V) perpendicular to the flow plane (101) at the die outlet, each bearing part (310) comprising a first end (312) supported on the deformable portion (220), and
- adjusting means (350, 380) also mobile relative to the body (210), capable of exerting action on a second end (314) of each bearing part (310) opposite the first end (312) and away from the die outlet so as to modify the position of this part,
- wherein the biasing means comprise at least one intermediate lever (350), the or each lever being placed between the or one of the bearing parts (310), so as to be supported against its second end, and adjusting means (380).
Dependencies are inferred from the claim text.