PANEL LAMINAR MATERIAL, ENVELOPMENT FOR ITS PRODUCTION AND METHOD OF ENVELOPMENT PRODUCTION Russian patent published in 2010 - IPC B32B27/40 B32B27/08 B32B5/18 B29C44/04 B29C45/14 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly to production of lamina material for automobile inner panels finish. Panel laminar material comprises flexible envelopment 1, rigid substrate 2 and interlayer 3. Flexible envelopment 1 comprises main part 8 that makes front side of laminar material and at least one flange 9 that runs from main part 8 toward substrate 2 to form at least one section of lateral side of laminar material. To prevent leaks of foam in forming interlayer 3, flange 9 is elongated by edge part 19 with flexible sponge 11 to be arranged between envelopment 1 and substrate 2. Said flexible sponge is pressed against substrate 2 so that the former makes a seal between envelopment and substrate. To prevent deformation of envelopment, edge part 10 comprises additionally at least one continuous or discontinuous ledge 12 running along flange 9 to prevent slippage of said part on closing the mould.

EFFECT: efficient seal of rigid substrate in forming interlayer between envelopment and substrate.

25 cl, 8 dwg