Patent ID: 8776350
Filing Date: 2014-07-15
Classification: E06B,Y10T

Abstract:
1. A method of making a spacer, the method comprising: providing a base article with first and second shoulder portions; forming first and second substantially parallel, undulating bands in the base article in a first direction; pinch rolling portions of the base article to create thinned regions of the base article and define the first and second shoulder portions, the thinned regions being thinner than the first and second shoulder portions; creating a series of first corrugations in the thinned regions via a first roll-forming operation; following the first roll-forming operation, creating a series of second corrugations in the thinned regions via a second roll-forming operation, the second corrugations being deeper than the first corrugations; heating the base article between the first and second roll-forming operations; shaping the base article in a second direction that is substantially transverse to the first direction to thereby form an enclosed area; forming the first and second shoulders to be adapted to support first and second substrates of an insulated glass unit, the first and second shoulders being shaped concavely with respect to the first and second substrates such that cavities are formed between the respective shoulders and the first and second substrates, wherein the cavities are adapted to receive a sealing material.