公开(公告)号：US20030041957A1

公开(公告)日：2003-03-06

申请号：US10282716

申请日：2002-10-29

申请人： Velcro Industries B.V., a Netherlands corporation

发明人： Andrew C. Harvey ,  Stephen C. Jens ,  Howard A. Kingsford ,  J. Scott Neumann ,  Richard M. Formato

IPC分类号： B29C047/00 ,  B29C043/46 ,  B29C043/58

CPC分类号： A44B18/0049 ,  A44B18/0061 ,  B29C43/222 ,  B29C43/46 ,  B29C47/0021 ,  B29C47/003 ,  B29C47/0033 ,  B29C47/32 ,  B29C59/025 ,  B29C59/04 ,  B29C2043/461 ,  B29C2043/465 ,  B29C2043/486 ,  B29L2031/729

摘要： Improvements are disclosed for an apparatus for continuously molding small fastener elements integral with a base web from a flowable resin. The apparatus comprises a cylindrical mold roll rotatable about an axis and defining small fastener element-shaped mold cavities in the surface thereof, and pressure-applying means to apply operating pressure to force the resin into the cavities at a pressure zone. The pressure-applying means and mold roll define a mold gap therebetween for forming the base web. The advantageous use of relatively long mold rolls, to produce a correspondingly wide web, and the use of higher molding pressures, e.g. to form very small fastener elements, is enabled by various improvements, including means to maintain the mold gap at a desired thickness profile across the length of the molding region of the mold roll under operating pressure. In some cases the pressure-applying means includes a pressure roll, in other cases it includes a resin nozzle assembly or pressure head. In some other cases it includes a belt. Various control schemes are also disclosed, as are means to provide cooling. In some particularly useful embodiments, at least one of the rolls of the apparatus has a resiliently deformable surface. Methods of molding fastener elements directly on a sheet material, such as sandpaper, are also disclosed, as well as methods for laminating.

公开(公告)号：US20040130056A1

公开(公告)日：2004-07-08

申请号：US10720739

申请日：2003-11-24

申请人： Velcro Industries B.V., a Netherlands Corporation

发明人： Andrew C. Harvey ,  Stephen C. Jens ,  Howard A. Kingsford ,  J. Scott Neumann ,  Richard M. Formato

IPC分类号： B29C047/00

CPC分类号： A44B18/0049 ,  A44B18/0061 ,  B29C43/222 ,  B29C43/46 ,  B29C48/08 ,  B29C48/12 ,  B29C48/13 ,  B29C48/30 ,  B29C48/35 ,  B29C59/025 ,  B29C59/04 ,  B29C2043/461 ,  B29C2043/465 ,  B29C2043/486 ,  B29L2031/729

摘要： Improvements are disclosed for an apparatus for continuously molding small fastener elements integral with a base web from a flowable resin. The apparatus comprises a cylindrical mold roll rotatable about an axis and defining small fastener element-shaped mold cavities in the surface thereof, and pressure-applying means to apply operating pressure to force the resin into the cavities at a pressure zone. The pressure-applying means and mold roll define a mold gap therebetween for forming the base web. The advantageous use of relatively long mold rolls, to produce a correspondingly wide web, and the use of higher molding pressures, e.g. to form very small fastener elements, is enabled by various improvements, including means to maintain the mold gap at a desired thickness profile across the length of the molding region of the mold roll under operating pressure. In some cases the pressure-applying means includes a pressure roll, in other cases it includes a resin nozzle assembly or pressure head. In some other cases it includes a belt. Various control schemes are also disclosed, as are means to provide cooling. In some particularly useful embodiments, at least one of the rolls of the apparatus has a resiliently deformable surface. Methods of molding fastener elements directly on a sheet material, such as sandpaper, are also disclosed, as well as methods for laminating.

摘要翻译： 公开了一种用于从可流动树脂连续地模制与基底纤维一体的小型紧固件的设备的改进。 该装置包括可围绕轴线旋转并在其表面中限定小的紧固件元件形模腔的圆柱形模具辊;以及加压装置，以施加操作压力以迫使树脂在压力区域进入空腔。 压力施加装置和模具辊在它们之间形成一个模具间隙，用于形成底部网。 相对长的模具辊的有利使用，以产生相应宽的幅材，以及使用更高的成型压力，例如， 以形成非常小的紧固件元件，其可通过各种改进实现，包括在工作压力下将模具间隙保持在模具辊的模制区域的长度上期望的厚度分布的装置。 在一些情况下，压力施加装置包括压力辊，在其它情况下包括树脂喷嘴组件或压头。 在其他一些情况下，它包括皮带。 还公开了各种控制方案，作为提供冷却的手段也是如此。 在一些特别有用的实施例中，装置的至少一个辊具有可弹性变形的表面。 还公开了将紧固件元件直接模制在诸如砂纸的片材上的方法，以及层压方法。