Method of applying adhesive to porous materials
    1.
    发明授权
    Method of applying adhesive to porous materials 失效
    将粘合剂涂在多孔材料上的方法

    公开(公告)号:US5472541A

    公开(公告)日:1995-12-05

    申请号:US322222

    申请日:1994-10-13

    摘要: A method of coating the surface of semi-rigid porous materials such as open cell foam or fibrous compositions with a thermoplastic adhesive in powder form which will reactivate. The powdered adhesive in a size range of 0-600 microns will remain on the surface of such materials even when cell diameter of the foam or space between fibers is larger than adhesive particle size. High porosity is maintained in the coated product. First a thermoplastic adhesive in powder form is dispensed uniformly onto the surface of a carrier belt which is coated with a release agent and is moving continuously. The adhesive advances to a preheating station where the adhesive is plasticized and will adhere to the carrier belt to prevent movement, after which the foam or fibrous material is placed on the adhesive which is adhered to the belt. The adhesive and material advance to a second heating station where the adhesive is fully melted to allow the adhesive to bridge cells in the foam or space between fibers. The material and adhesive then advance to and through a cooling station where temperature of the adhesive and material are reduced to allow the adhesive to resolidify and the composite to release from the carrier belt and exit the machine.

    摘要翻译: 将半刚性多孔材料如开孔泡沫或纤维组合物的表面用粉末形式的热塑性粘合剂涂覆的方法将会重新激活。 尺寸范围为0-600微米的粉末状粘合剂即使在泡沫的泡孔直径或纤维之间的空间大于粘合剂颗粒尺寸时,也将保留在这些材料的表面上。 涂层产品保持高孔隙率。 首先将粉末形式的热塑性粘合剂均匀地分配到涂覆有脱模剂并继续移动的载体带的表面上。 粘合剂前进到预热站,其中粘合剂被塑化并且将粘附到载体带以防止移动,之后将泡沫或纤维材料放置在粘附到带上的粘合剂上。 粘合剂和材料前进到第二加热站,其中粘合剂完全熔化,以允许粘合剂将泡沫中的细胞或纤维之间的空间桥接。 材料和粘合剂然后前进并通过冷却站,其中粘合剂和材料的温度被降低以允许粘合剂重新固化,并且复合材料从载体带释放并离开机器。

    Compressing and shaping thermoformable mats using superheated steam
    2.
    发明授权
    Compressing and shaping thermoformable mats using superheated steam 失效
    使用过热蒸汽压缩和成型可热成型垫

    公开(公告)号:US5108691A

    公开(公告)日:1992-04-28

    申请号:US274573

    申请日:1988-11-23

    申请人: George M. Elliott

    发明人: George M. Elliott

    摘要: A thermoformable mat, e.g., a mat of resinated fiberglass, is compressed and shaped into a contoured object, e.g., a shell for an automobile headliner, by this process. The mat is compressed between two dies that have been preheated. At least one of the dies is perforated. Superheated steam (e.g., at 80 psig and 600.degree. F.) is ejected from the perforations into the mat, thereby quickly raising the mat temperature to its thermoforming point. After the mat is set into the contoured shape, the dies are reopened and the formed mat is removed. If the mat that is used contains a thermoplastic adhesive, the mat is cooled to below the adhesive's melt print before the dies are opened. This can be done by applying a vacuum to the perforated die and pulling ambient air through the mat.

    摘要翻译: 可热成型的垫,例如树脂化玻璃纤维垫,通过该方法被压缩并成形为轮廓物体,例如用于汽车顶篷的外壳。 垫被压缩在已经预热的两个模具之间。 至少一个模具是穿孔的。 过热蒸汽(例如,80psig和600°F)从穿孔喷射到垫中,从而将垫温度快速升高到其热成型点。 在将垫子设置成轮廓形状之后,再次打开模具并且移除所形成的垫子。 如果使用的垫包含热塑性粘合剂,则在开模之前将垫冷却至低于粘合剂的熔体印刷。 这可以通过对穿孔模具施加真空并将环境空气拉过垫子来完成。

    Method of making mats of chopped fibrous material
    3.
    发明授权
    Method of making mats of chopped fibrous material 失效
    短切纤维材料制作方法

    公开(公告)号:US5565049A

    公开(公告)日:1996-10-15

    申请号:US456771

    申请日:1995-06-01

    摘要: The subject matter of this invention relates to a method of making glass fiber mat reinforcement material with a thermoplastic adhesive powder. Fiberglass strands are chopped and randomly air dropped onto a Teflon.RTM. coated conveyor belt to form a loose mat. A water mist is then applied to the loose mat and transport belt, before a powdered adhesive is dispensed. Heat is applied to plasticize the adhesive and finally the adhesive is solidified by cooling. The adhesive will then release from the transport belt and is adhered to the material forming the fiberglass reinforcement mat.

    摘要翻译: 本发明的主题涉及一种制造具有热塑性粘合剂粉末的玻璃纤维垫增强材料的方法。 将玻璃纤维束切碎并随机空气滴到Teflon TM涂布的输送带上以形成松散垫。 然后在分散粉末状粘合剂之前将水雾施加到松散垫和输送带上。 施加热量以使粘合剂增塑,最后通过冷却固化粘合剂。 然后,粘合剂将从输送带释放并粘附到形成玻璃纤维增​​强垫的材料上。

    Fabric pressing machine using superheated steam
    6.
    发明授权
    Fabric pressing machine using superheated steam 失效
    织物压机采用过热蒸汽

    公开(公告)号:US4744160A

    公开(公告)日:1988-05-17

    申请号:US905406

    申请日:1986-09-10

    IPC分类号: D06F71/34

    CPC分类号: D06F71/34

    摘要: A steam pressing machine comprising a perforated steam platen and means for pre-heating the platen, e.g., an electric heater, is improved by providing it with a source of superheated steam for ejection out of the platen, rather than saturated steam. This allows the use of lower platen temperatures, and, therefore, lower fabric temperatures. Pressing is faster, because the fabric takes less time to cool, and nap-crushing and shining are less of a problem.

    摘要翻译: 包括穿孔蒸汽压板的蒸汽压机和用于预热压板(例如电加热器)的装置通过为其提供用于从压板排出而不是饱和蒸汽的过热蒸汽源而被改进。 这允许使用较低的压板温度,并因此降低织物温度。 按压速度更快,因为织物需要更少的时间来冷却,并且打盹和闪光不是一个问题。