Soft foam mattress free from adhesive - consists of two layers with different properties attached together by adjacent T=section grooves and ribs which leave desired air spaces

摘要

A foam mattress is made up of two different types of mattress material bonded together. The one has T-section grooves running across the inner side, the other has corresp. T-section ribs which fit into the grooves to produce a tight bond. ADVANTAGE - The bond prevents any effect of reduced elasticity and flexibility in the combination of the two layers. When the ribs are somewhat smaller than the grooves air spaces are left which improve the mattress properties; moreover the sizes of those spaces can be regulated to suit the required elasticity of the prod..