公开(公告)号：US4379856A

公开(公告)日：1983-04-12

申请号：US339595

申请日：1982-01-15

申请人： Reinhard Samaritter ,  Winfried Schoberth ,  Robert Volland

发明人： Reinhard Samaritter ,  Winfried Schoberth ,  Robert Volland

IPC分类号： A47C27/15 ,  A47C7/18 ,  B29C39/00 ,  B29C39/12 ,  B29C39/24 ,  B29C44/04 ,  B29K75/00 ,  B29K105/04 ,  B29L31/58 ,  B60N2/70 ,  C08G18/08 ,  C08G18/76 ,  C08G18/14

CPC分类号： B29C44/0461 ,  B60N2/70 ,  C08G18/14 ,  C08G18/7664 ,  Y10S521/917 ,  Y10T428/249981

摘要： A deformable and durable polyurethane foam molding is made from the reaction product of a polyether polyol component and a polyisocyanate component. The polyether polyol component is a polyether having at least two hydroxyl groups, a molecular weight of from 400 to 10,000 and at least 10 wt. % hydroxyl groups which are primary hydroxyl groups. The polyisocyanate component is a mixture of from 60-90 wt. % 4,4'-diphenyl methane diisocyanate and from 3-30 wt. % 2,4'-diphenyl methane diisocyanate. Such reaction mixture is prepared in each of at least two mixing heads. The index of reaction mixture is different from that in the other mixing head. The mixture is then introduced into associated zones of a mold cavity where the mixture is allowed to foam. The molding is subsequently removed from the mold cavity. These polyurethane foam moldings are particularly useful in making seat cushions.

摘要翻译： 由聚醚多元醇组分和多异氰酸酯组分的反应产物制成可变形和耐久的聚氨酯泡沫模制品。 聚醚多元醇组分是具有至少两个羟基，分子量为400至10,000和至少10重量％的聚醚。 ％羟基为伯羟基。 多异氰酸酯组分是60-90wt。 ％4,4'-二苯基甲烷二异氰酸酯和3-30wt。 ％2,4'-二苯甲烷二异氰酸酯。 在至少两个混合头中的每一个中制备此类反应混合物。 反应混合物的指数与其他混合头的指数不同。 然后将混合物引入模腔的相关区域中，使混合物发泡。 随后将模制件从模腔中取出。 这些聚氨酯泡沫塑料模制品在制作座垫时特别有用。

公开(公告)号：US4618532A

公开(公告)日：1986-10-21

申请号：US641118

申请日：1984-08-15

申请人： Robert Volland ,  Hans-Albrecht Freitag ,  Johannes Seesing ,  Herbert Bergmann

发明人： Robert Volland ,  Hans-Albrecht Freitag ,  Johannes Seesing ,  Herbert Bergmann

IPC分类号： B32B5/18 ,  A47C7/18 ,  A47C27/00 ,  B29C39/10 ,  B29C44/12 ,  B29C44/16 ,  B29K105/04 ,  B29L31/58 ,  B32B5/24 ,  B68G7/06 ,  B68G11/04 ,  B32B3/26

CPC分类号： B29C44/16 ,  A47C7/18 ,  B29C44/1261 ,  B29L2031/58 ,  B29L2031/751 ,  Y10T428/233 ,  Y10T428/239 ,  Y10T428/249953 ,  Y10T428/24996 ,  Y10T428/249976

摘要： The present invention is directed to an upholstered seat consisting of an in situ foam core based on a cold foam formulation and an air-permeable covering and to a process for integrally producing an upholstered seat with improved standards of comfort by back foaming a covering material in a mold, characterized in that, in a split mold of which the dividing plane preferably extends in the vicinity of the actual seat surface, a sealed foam-impermeable covering material is applied to the internal contour of the mold and that part of the covering material which forms the actual seat surface is clamped in the dividing plane of the mold, the entire mold cavity is filled with foam by metering the foam in correspondingly large quantities, after which the sealing layer around the fully reacted foam core, where it consists of an air-impermeable material, is destroyed by a mechanical treatment, such as needle punching, flexing, compression, knocking, or by solvents to at least such an extent that it becomes permeable to air.

摘要翻译： 本发明涉及一种软垫座椅，其由基于冷泡沫配方的原位泡沫芯和透气性覆盖物组成，并且涉及一种通过使覆盖材料反向发泡来改善舒适度的整体制造软垫座椅的方法 模具，其特征在于，在分割平面优选在实际座面附近延伸的分割模具中，将密封的不透泡覆盖材料施加到模具的内部轮廓，并且该部分覆盖材料 形成实际的座面的模具被夹紧在模具的分割平面中，整个模腔通过相当大量地计量泡沫填充泡沫，此后，完全反应的泡沫芯周围的密封层由 不透气材料通过机械处理如针刺，弯曲，压缩，敲击或通过溶剂破坏至少至少这样的程度 它变得透气。