Patent ID: 6250909
Filing Date: 2001-06-26
Classification: B29C,Y10S

Abstract:
A web clamp arrangement for thermoforming processes, the web clamp arrangement comprising:(a) first and second web clamp assemblies to be disposed, respectively, at front and rear ends of a mold base to clamp a web of thermoforming material against a pressure box disposed above said mold base;(b) each of said first and second web clamp assemblies including a normally horizontal clamp bar attached to two vertical rods, which rods force said clamp bar against a lower surface of said web to force said web against an edge of said pressure box; and(c) said normally horizontal clamp bar being (moveably) rotatable and horizontally moveably attached to distal ends of said vertical rods, such that vertical misalignment of said clamp bar during clamping of said web against said edge of said pressure box is accommodated by relative movement of said normally horizontal clamp bar and said distal ends of said vertical rods such as to prevent damage to said first and second web clamp assemblies.