公开(公告)号：US4769274A

公开(公告)日：1988-09-06

申请号：US943870

申请日：1986-12-22

申请人： Bengt A. Tellvik ,  Andrew J. Manning ,  Douglas C. Woerner

发明人： Bengt A. Tellvik ,  Andrew J. Manning ,  Douglas C. Woerner

IPC分类号： B29C51/14 ,  B29C70/02 ,  B32B5/26 ,  D21H13/10 ,  D21H17/33 ,  D21H17/67 ,  D21H21/06 ,  D21H21/14 ,  D21H27/30 ,  D21H5/20

CPC分类号： D21H27/30 ,  B29C51/145 ,  B29C70/025 ,  B32B5/26 ,  D21H13/10 ,  D21H17/33 ,  D21H17/67 ,  D21H21/06 ,  D21H21/14 ,  Y10T428/24628 ,  Y10T428/24992 ,  Y10T428/31978

摘要： A relatively inexpensive mat is provided which through the application of heat and pressure readily can be densified to form rigid shaped articles having a reduced overall density. The mat is substantially free of a binder (e.g., a latex binder) and consists essentially of a substantially radom array of (a) relatively coarse cellulosic fibers, (b) thermoplastic synthetic polymer fibrils, (c) non-fibrous thermoplastic synthetic polymer particles, (d) substantially void-free substantially water-insoluble particulate inorganic material (e.g., talc), and (e) particulate void-containing substantially water-insoluble inorganic material (e.g., expanded volcanic glass) having a lesser density than component (d) in the specified quantities. A plurality of the mats while stacked together with similar mats of greater density on at least the upper and lower surfaces may be subjected to heat and pressure to accomplish densification and thermal bonding within and between adjoining mats to form a laminate. The presence of component (e) in conjunction with the other components has been found to enable the efficient control of the density in the resulting product regardless of the pressure applied during thermoforming. The resulting cellulosic fiber reinforced product can be used to advantage as a shaped rigid lightweight panel for use as an inner automobile door liner or in similar end uses which require a rigid sheet or panel having a predetermined configuration. A decorative surface optionally may be applied to the resulting article.

摘要翻译： 提供了一种相对便宜的垫，其通过施加热和压力容易地致密化以形成具有降低的总体密度的刚性制品。 垫基本上不含粘合剂（例如胶乳粘合剂），并且基本上由（a）相对粗的纤维素纤维，（b）热塑性合成聚合物原纤维，（c）非纤维热塑性合成聚合物颗粒 ，（d）基本上无空隙的基本上不溶于水的颗粒无机材料（例如滑石），和（e）具有比组分（d）更小的密度的颗粒状含空隙的基本上不溶于水的无机材料（例如，膨胀火山玻璃） ）指定数量。 至少在上表面和下表面上堆叠有较大密度的类似垫的多个垫可以经受加热和压力以在相邻垫之间和相邻垫之间实现致密化和热粘合以形成层压体。 已经发现组分（e）与其它组分的存在使得能够有效地控制所得产物中的密度，而不管在热成型过程中施加的压力如何。 所得到的纤维素纤维增强产品可以用作用作内部汽车门衬的成形刚性轻质面板或者需要具有预定构型的刚性板或面板的类似终端用途。 任选地可以将装饰表面施加到所得到的制品。

公开(公告)号：US4769109A

公开(公告)日：1988-09-06

申请号：US944227

申请日：1986-12-22

申请人： Bengt A. Tellvik ,  Andrew J. Manning ,  Douglas C. Woerner

发明人： Bengt A. Tellvik ,  Andrew J. Manning ,  Douglas C. Woerner

IPC分类号： B29C51/14 ,  B29C70/02 ,  B32B5/26 ,  D21H13/10 ,  D21H17/33 ,  D21H17/67 ,  D21H21/06 ,  D21H21/14 ,  D21H27/30 ,  D21H1/02

CPC分类号： B32B5/26 ,  B29C51/145 ,  B29C70/025 ,  D21H27/30 ,  D21H13/10 ,  D21H17/33 ,  D21H17/67 ,  D21H21/06 ,  D21H21/14

摘要： A relatively inexpensive mat is provided which through the application of heat and pressure readily can be densified to form rigid shaped articles. The mat is substantially free of a binder (e.g., a latex binder) and consists essentially of a substantially random array of (a) relatively coarse cellulosic fibers, (b) thermoplastic synthetic polymer fibrils, (c) non-fibrous thermoplastic synthetic polymer particles, and (d) substantially void-free substantially water-insoluble particulate inorganic material (e.g., talc) in the specified quantities. The mat preferably is formed by wet-laying from an aqueous dispersion wherein the (c) and (d) components are dispersed among and physically retained by the (a) and (b) components. A plurality of the mats while stacked may be subjected to heat and pressure to accomplish densification and thermal bonding within and between adjoining sheets to form a laminate. The resulting cellulosic fiber reinforced product can be used to advantage as a shaped rigid panel for use as an inner automobile door liner or in similar end uses which require a rigid sheet or panel having a predetermined configuration. A decorative surface optionally may be applied to the resulting article.

摘要翻译： 提供了一种相对便宜的垫，其通过施加热和压力容易地致密化以形成刚性成形制品。 垫基本上不含粘合剂（例如胶乳粘合剂），并且基本上由（a）相对较粗的纤维素纤维，（b）热塑性合成聚合物原纤维，（c）非纤维热塑性合成聚合物颗粒 ，和（d）基本上无空隙的基本上不溶于水的颗粒无机材料（如滑石）。 垫优选通过从其中（c）和（d）成分分散在其中并由（a）和（b）成分物理保持的水性分散体湿法成型而形成。 堆叠的多个垫可以经受热和压力以实现相邻片材内和之间的致密化和热粘合以形成层压体。 所得到的纤维素纤维增强产品可用作用作内部汽车门衬垫的成形刚性面板或者需要具有预定构型的刚性板或板的类似终端用途。 任选地可以将装饰表面施加到所得到的制品。