首页>
外国专利>
MANUFACTORE OF FOAM MATERIAL CUSHION FROM DIFFERENT REACTION MIXTURE FORMING AT LEAST TWO KIND OF FOAM MATERIAL HAVING DIFFERENT ELASTICITY OR HARDNESS, PARTICULARLY, POLYURETHANE FOAM MATERIAL, AND HAVING DIFFERENT FLUIDITY
MANUFACTORE OF FOAM MATERIAL CUSHION FROM DIFFERENT REACTION MIXTURE FORMING AT LEAST TWO KIND OF FOAM MATERIAL HAVING DIFFERENT ELASTICITY OR HARDNESS, PARTICULARLY, POLYURETHANE FOAM MATERIAL, AND HAVING DIFFERENT FLUIDITY
PURPOSE: To obtain a foam cushions durable against a different load by introducing one of both reaction mixtures into a mold cavity only when it is creamed up and already arrives at a viscous state, and simultaneously introducing the second non-creamed mixture. CONSTITUTION: A first and at least one type other reaction mixture are introduced into a mold cavity, reacted to cushions having different elasticity and rigidity regions, and then the cushions are left from the mold. That is, in the case of obtaining two types of the foam materials having different elasticity or rigidity or particularly a foam cushions from the different types of reaction mixture corresponding to the fluidity for forming the polyurethane foam material, the mixture is introduced into the cavity only after it arrives at a creamed up already viscous state, and second non-creamed reaction mixture is simultaneously introduced.
展开▼