US 11,865,743 B2
Method and tool for injection moulding
Lennart Karlsson, Alingsas (SE)
Assigned to FLEXIJECT AB, Alingsas (SE)
Filed by FLEXIJECT AB, Alingsas (SE)
Filed on Jan. 23, 2023, as Appl. No. 18/157,847.
Application 18/157,847 is a division of application No. 15/733,643, granted, now 11,613,057, previously published as PCT/SE2019/050257, filed on Mar. 22, 2019.
Claims priority of application No. 1850352-4 (SE), filed on Mar. 28, 2018.
Prior Publication US 2023/0166437 A1, Jun. 1, 2023
Int. Cl. B29C 45/32 (2006.01); B29C 45/27 (2006.01); B29C 45/16 (2006.01)
CPC B29C 45/2704 (2013.01) [B29C 45/32 (2013.01); B29C 2045/1681 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An injection moulding tool for performing a method for simultaneously injection moulding two or more parts with a different size, shape and/or volume using an injection moulding machine, the injection moulding tool including two or more mould cavities and a feed system comprising at least one gate and a plurality of runners that is arranged to be located upstream of said at least one gate, wherein said plurality of runners comprises at least one movable wall that is arranged to enable at least one cross-sectional dimension of said plurality of runners to be changed in order achieve at least one of the following:
a) to apply a holding pressure to material in said plurality of runners and consequently to said two or more mould cavities,
b) to compress residue in said plurality of runners,
whereby said tool comprises means to change said at least one cross-sectional dimension of said a plurality of runners, and whereby said at least one cross-sectional dimension of said plurality of runners is individually variable.