A coating device for supplying a liquid to a substrate, particularly in the form of an optionally printed web, foil, strip or sheet, comprises a reservoir for holding a quantity of liquid. Coating means are provided which are able and configured to take liquid from the reservoir and transfer it to the substrate. Supply means deliver the liquid into the reservoir during operation. The supply means are controllable and are able to lead a constant liquid flow into the reservoir. The reservoir is provided with level detecting means which are able and configured to detect a liquid level in the reservoir. Provided between the level detecting means and the coating means is a control which controls the coating means during operation on the basis of a detection (LS) of the liquid level in the reservoir in order to maintain the liquid level at a fixed value.

A tandem system of metering and donor rolls is used to apply two different adhesives to a fully adhesive backed multilayer sheet to produce variably distributed adhesives and properties. Each of the two adhesives is unique and is cured differently to create a layer of adhesive that has differing adhesive properties on the sheet. A clear adhesive is applied to a top portion of cards before they are cut from the sheet and has a higher tackiness than the adhesive applied to the rest of the cards on the sheet in order to reduce glue buildup on blades cutting the cards from the sheet.

The present invention relates to a paint roller for evenly supplying paint. A paint roller according to one embodiment of the present invention comprises: a cylindrical roller body having a plurality of holes; and a roller cover surrounding the outer surface of the roller body, wherein the holes are densely distributed at opposite ends of the roller body.

A glue applying mechanism of an edge banding machine includes a base, a glue applying unit and a glue quantity regulator. The base includes a glue tub. The glue applying unit is rotatably disposed on the glue tub of the base and includes a glue shaft and an obliquely glue applying member connected with the glue shaft. The glue quantity regulator is rotatably disposed on the base and includes a rotatable shaft, and a regulating plate and a blocking plate, which are connected with the rotatable shaft. The regulating plate is rotatable along with the rotatable shaft to cause edges of the regulating plate adjacent to the glue applying unit at the same time. The blocking plate is fixed to the rotatable shaft separately from the regulating plate. The above-described configuration of the glue applying mechanism is effective in controlling the applied glue quantity in thickness.

Aspects herein relate to coating apparatus and methods for coating medical devices. In an embodiment, a coating system is included having a valve, a fluid supply reservoir in fluid communication with the valve, a reciprocating positive displacement pump in fluid communication with the valve, and a fluid applicator in fluid communication with the three-way valve. The valve can be configured to assume a first fluid transport state and a second fluid transport state, wherein the valve provides fluid communication between the fluid supply reservoir and the reciprocating positive displacement pump when in the first fluid transport state for filling of the reciprocating positive displacement pump, and wherein the valve provides fluid communication between the reciprocating positive displacement pump and the fluid applicator when in the second fluid transport state for applying a coating suspension to a medical device surface. Other embodiments are also included herein.

There is disclosed apparatus for wetting a roller of a printing system comprising an applicator unit comprising a liquid agent chamber. Upper and lower walls extend from the liquid agent chamber to define a slit therebetween. The upper wall extends beyond a lip of the lower wall to a transfer lip. A flow restrictor is received in the slit to prevent flow of liquid agent to a respective portion of the transfer lip, thereby defining a restricted portion of the slit and an adjacent unrestricted portion of the slit. The flow restrictor fits in the restricted portion with a clearance that permits liquid agent flow at a reduced velocity relative flow through the unrestricted portion, such that liquid agent along the restricted portion is discharged from the lower wall. A method of installing a flow restrictor is also disclosed.

A painting method and a painting apparatus for a band material that prevent a printing defect during a long-time operation by preventing agglomeration and adhesion of a thixotropic paint in a paint pan is disclosed. The liquid paint is discharged to the paint pan as a jet flow from a level lower than a liquid surface of a paint basin toward a bottom of the paint pan, thereby creating a bottom flow along the bottom of the paint pan and an upward vortex from the bottom along a side wall of the paint pan. The liquid paint overflows in an amount corresponding to a supplied amount to the paint pan from a front upper edge of the paint pan in a flowing direction of the bottom flow, thereby flowing the liquid paint continuously in the paint pan toward the front upper edge.

A glue applying mechanism of an edge banding machine includes a base, a glue applying unit and a glue quantity regulator. The base includes a glue tub. The glue applying unit is rotatably disposed on the glue tub of the base and includes a glue shaft and an obliquely glue applying member connected with the glue shaft. The glue quantity regulator is rotatably disposed on the base and includes a rotatable shaft, and a regulating plate and a blocking plate, which are connected with the rotatable shaft. The regulating plate is rotatable along with the rotatable shaft to cause edges of the regulating plate adjacent to the glue applying unit at the same time. The blocking plate is fixed to the rotatable shaft separately from the regulating plate. The above-described configuration of the glue applying mechanism is effective in controlling the applied glue quantity in thickness.

A lamination method, includes: a first coating step of applying any one of a main agent M and a curing agent H of a two-component curable adhesive as a coating liquid to a first web W1; a second coating step of applying the other one of the main agent M and the curing agent H as a coating liquid to a second web W2; and a bonding step of bonding a coating liquid-coated surface of the first web W1 and a coating liquid-coated surface of the second web W2, and of combining the main agent M and the curing agent H to increase a molecular weight. In addition, in the first coating step and the second coating step, the main agent M or the curing agent H is applied by a gravure coater.

A gravure coater test apparatus includes a gravure roll and a backup roll which are circumscribed to each other, a motor which drives the gravure roll partially submerged in a water-based pressure-sensitive adhesive for coating, a controller which adjusts the rotational speed of the motor, a doctor blade which is selected from a plurality of types to scrape the water-based pressure-sensitive adhesive from the surface of the gravure roll being rotated, and an infrared analyzer which allows at least one of the type of the water-based pressure-sensitive adhesive corresponding to the selected doctor blade, the uniformity of the coating surface, and the amount of the coated water-based pressure-sensitive adhesive to be confirmed.