Making layered structures
Abstract
Abstract FORMING A TWO-LAYER LAMINATE FROM LAYERS FORMED OF DIFFERENT THERMOPLASTIC MATERIALS, OF WHICH THE FIRST THREMOPLASTIC MATERIAL HAS A SUBSTANIALLY HIGHER SOFTENING TEMPERATURE THAN THE SECOND, BY SPREADING INTO THE SURFACE OF THE FIRST THERMOPLASTIC MATERIAL PARTICLES OF A POROUS FILLER OF IRREGULAR CONFIGURATION, SLIGHTLY SOFTENING THIS SURFACE AND APPLYING PRESSURE TO IMBED THE PARTICLES ONLY PARTIALLY BUT FIRMLY INTO THE FIRST THERMOPLASTIC MATERILA, COOLING THIS FIRST LAYER, PLACING THE MATERIAL OF THE SECOND LAYER ON THIS SURFACE, AND SUBJECTING THE TWO LAYERS TO A TEMPERATURE BELOW THE SOFTENING RANGE OF THE FIRST THERMOPLASTIC MATERIAL BUT WITHIN THE SOFTENING RANGE OF THE SECOND TO ADHERE THE SECOND TERMOPLASTIC MATERIAL TO THE EXPOSED SURFACES OF THE FILLER PARTICLES.
Inventors
- 👤 Ralph Zito Jr
Bibliographic Details
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