Patent ID: 6054004
Filing Date: 2000-04-25
Classification: B29C,B29K,B32B,E04B,F16L,Y10T

Abstract:
A method for manufacturing a heat insulating structure having the steps of covering a surface and back face of a fibrous heat insulating material with a first sheet and a second sheet respectively and gluing the sheets to the heat insulating material and continuously gluing both ends of the sheets to each other to fix both sheets to each other, wherein the continuously gluing step comprises the steps of:applying glue to both ends of the sheets at a prescribed speed along the longitudinal direction of the heat insulating structure;turning both ends of the second sheet to stand at 90 degree angle almost in a vicinity of a dividing line between an inner portion and an outer portion thereof; then turning both ends of the second sheet at a 60 degree angle, while the heat insulating structure is carried on a conveyer;folding up both ends of the second sheet to clip and wrap both ends of the first sheet and thereby forming a three-ply structure; andpressing the ends to form a secure fold.