METHOD OF AND APPARATUS FOR CUTTING LAMINATED MATERIALS

• Main Authors: BENZING II JAMES A, DOWNING DANIEL R, HEAD WILLIAM J, GEHRETT LARRY J, WOLBERT HAROLD A
• Format: Patent
• Language: English
• Published: 31.08.2000
• Edition: 7
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING,CUTTING-OUT, STAMPING-OUT OR SEVERING; HAND CUTTING TOOLS; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SEVERING; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

This invention pertains to a unique method and apparatus (100) for cutting an intermediate article of manufacture, the intermediate article of manufacture being a cord reinforced elastomeric laminate (10A). More specifically, the invention relates to methods and apparatus for cutting a cord reinforced elastomeric laminate, the laminate (10A), when cut to length, becoming a carcass (10) for a pneumatic tire. The apparatus (100) of the present invention can cut a cord reinforced ply (20) at angles creating large substantially flat planar splice surfaces without significant deformation or precuring of the unvulcanized elastomeric material. The cut surfaces can be cut at angles greater than 60 DEG relative to a normal plane (NP) perpendicular to the ply and parallel to the cords, preferably being cut at angles of about 80 DEG . This can be done precisely and quickly. The cutting means (102) provides improvements to these splice surfaces.