B
PERFORMING OPERATIONS; TRANSPORTING
B
PERFORMING OPERATIONS; TRANSPORTING
B29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B29C
SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
B29C
SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
61/00
Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
61/00
Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
B29C61/06
Making preforms having internal stresses, e.g. plastic memory
B29C61/06
Making preforms having internal stresses, e.g. plastic memory
B29C61/0608
characterised by the configuration or structure of the preforms
B29C61/0608
characterised by the configuration or structure of the preforms
B29C61/0616
layered or partially layered preforms, e.g. preforms with layers of adhesive or sealing compositions
B29C61/0616
layered or partially layered preforms, e.g. preforms with layers of adhesive or sealing compositions