公开(公告)号：US20040187773A1

公开(公告)日：2004-09-30

申请号：US10821588

申请日：2004-04-09

Applicant: 3M Innovative Properties Company

Inventor： William K. Leonard ,  David W. Leonard ,  Albert E. Seaver

IPC: B05D001/00 ,  B05C001/00

CPC classification number: B05C11/025 ,  B05C5/0208

Abstract: The uniformity of a wet coating on a substrate is improved by contacting the coating at a first position with the wetted surfaces of periodic pick-and-place devices, and re-contacting the coating with such wetted surfaces at positions on the substrate that are different from the first position and not periodically related to one another with respect to their distance from the first position. A coating is applied to a substrate by applying an uneven wet coating, contacting the coating at a first position with the wetted surfaces of periodic pick-and-place devices, and re-contacting the coating with such wetted surfaces at positions on the substrate that are different from the first position and not periodically related to one another with respect to their distance from the first position. These methods can provide extremely uniform coatings and extremely thin coatings, at very high rates of speed. The coatings can be applied in lanes with sharply defined edges and independently adjustable coating calipers. The pick-and-place devices facilitate drying and reduce the sensitivity of drying ovens to coating caliper surges. Equipment to carry out these methods is simple to construct, set up and operate, and can easily be adjusted to alter coating thickness and compensate for coating variation.

Abstract translation: 通过使第一位置的涂层与周期性取放装置的润湿表面接触，并且使涂层与基底上不同的位置处的这些润湿表面接触来改善衬底上的湿涂层的均匀性 相对于与第一位置的距离，从第一位置开始并且不周期性地相关联。 通过施加不均匀的湿涂层将涂层施加到基底上，使第一位置的涂层与周期性拾取和放置装置的润湿表面接触，并将涂层与这样的润湿表面重新接触在基底上的位置， 与第一位置不同，并且相对于与第一位置的距离彼此不周期性地相关。 这些方法可以以非常高的速度提供非常均匀的涂层和极薄的涂层。 涂层可以应用在具有尖锐边缘的车道和独立可调涂层卡钳。 拾放装置便于干燥，并降低干燥炉对涂层卡尺冲击的敏感性。 执行这些方法的设备易于构造，设置和操作，并且可以容易地调整以改变涂层厚度并补偿涂层变化。

公开(公告)号：US20040185180A1

公开(公告)日：2004-09-23

申请号：US10815363

申请日：2004-04-01

Applicant: 3M Innovative Properties Company

Inventor： Albert E. Seaver ,  William K. Leonard

IPC: B05D001/32

CPC classification number: B05B13/0228 ,  B05C5/0208 ,  B05C11/025

Abstract: A liquid coating is formed on a substrate by electrostatically spraying drops of the liquid onto a liquid-wetted conductive transfer surface and transferring a portion of the thus-applied liquid from the transfer surface to the substrate. Optionally, one or more nip rolls force the substrate against the transfer surface, thereby decreasing the time required for the drops to spread and coalesce into the coating. Preferably, the coating is passed through an improvement station comprising two or more pick-and-place devices that improve the uniformity of the coating. The coating can be transferred from the conductive transfer surface to a second transfer surface and thence to the substrate. Insulative substrates such as plastic films can be coated without requiring substrate pre-charging or post-coating neutralization. Porous substrates such as woven and nonwoven webs can be coated without substantial penetration of the coating into or through the substrate pores.

Abstract translation: 通过在液体润湿的导电转移表面上静电喷涂液滴并将一部分如此施加的液体从转印表面转印到基底上，在基底上形成液体涂层。 任选地，一个或多个夹辊将基底压在转印表面上，从而减少液滴扩散并聚结到涂层中所需的时间。 优选地，涂层通过包括改善涂层均匀性的两个或更多个拾取和放置装置的改进工位。 涂层可以从导电转移表面转移到第二转印表面，然后转移到基底。 可以涂覆诸如塑料膜的绝缘衬底，而不需要衬底预充电或后涂层中和。 多孔基材如编织物和非织造纤维网可以涂覆而不会使涂层基本上渗透到基底孔中或通过基底孔。

公开(公告)号：US20020192360A1

公开(公告)日：2002-12-19

申请号：US09841380

申请日：2001-04-24

Applicant: 3M Innovative properties Company

Inventor： Albert E. Seaver ,  William K. Leonard

IPC: B05D001/28 ,  B05D001/04 ,  B05D005/12

CPC classification number: B05B13/0228 ,  B05C5/0208 ,  B05C11/025

Abstract: A liquid coating is formed on a substrate by electrostatically spraying drops of the liquid onto a liquid-wetted conductive transfer surface and transferring a portion of the thus-applied liquid from the transfer surface to the substrate. Optionally, one or more nip rolls force the substrate against the transfer surface, thereby decreasing the time required for the drops to spread and coalesce into the coating. Preferably, the coating is passed through an improvement station comprising two or more pick-and-place devices that improve the uniformity of the coating. The coating can be transferred from the conductive transfer surface to a second transfer surface and thence to the substrate. Insulative substrates such as plastic films can be coated without requiring substrate pre-charging or post-coating neutralization. Porous substrates such as woven and nonwoven webs can be coated without substantial penetration of the coating into or through the substrate pores.

Abstract translation: 通过在液体润湿的导电转移表面上静电喷涂液滴并将这样施加的液体的一部分从转印表面转移到基底上，在基底上形成液体涂层。 任选地，一个或多个夹辊将基底压在转印表面上，从而减少液滴扩散并聚结到涂层中所需的时间。 优选地，涂层通过包括改善涂层均匀性的两个或更多个拾取和放置装置的改进工位。 涂层可以从导电转移表面转移到第二转印表面，然后转移到基底。 可以涂覆诸如塑料膜的绝缘衬底，而不需要衬底预充电或后涂层中和。 多孔基材如编织物和非织造纤维网可以涂覆而不会使涂层基本上渗透到基底孔中或通过基底孔。

公开(公告)号：US20020182333A1

公开(公告)日：2002-12-05

申请号：US09841381

申请日：2001-04-24

Applicant: 3M Innovative Properties Company

Inventor： Albert E. Seaver ,  William K. Leonard

IPC: B05D001/04

CPC classification number: D21H23/50 ,  B05B5/0255 ,  B05B5/14 ,  B05D1/04 ,  B05D1/28 ,  B05D1/40 ,  B05D1/42

Abstract: A liquid coating is formed by spraying drops of liquid onto a substrate or a transfer surface from an electrostatic spray head that produces a mist of drops and a wet coating in response to an electrostatic field. During spraying, the electrostatic field is repeatedly altered to change the pattern deposited by the drops. The wet coating can be contacted with two or more pick-and-place devices that improve the uniformity of the coating.

Abstract translation: 通过从静电喷头喷射液滴到基板或转印表面上而形成液体涂层，该静电喷头产生响应于静电场的液滴和湿涂层。 在喷涂期间，静电场被重复改变以改变由液滴沉积的图案。 湿涂层可以与两个或更多个拾取和放置装置接触，从而改善涂层的均匀性。