Abstract:
Polyphenylene sulfide blends with melt extrudable polymers form novel monofilaments. The monofilament is prepared by extruding a mixture of the linear polyphenylene sulfide and the melt extrudable polymer to form a monofilament blend, quenching the monofilament and thereafter drawing the monofilament to a ratio of from about 3:1 to 6:1. The resulting filament can be employed for the manufacture of fabric.
Abstract:
An apparatus for continuously and sequentially forming cylindrical bodies from flat sheet material includes a rotating mandrel and an array of forming belts spaced along the mandrel for receiving and winding either continuous ribbon or discrete blanks of composite material about the mandrel to form a cylindrical body such as for a container and passing the formed body along the mandrel to a heat sealing means to seal the overlapping edges of the material; the array of belts are disposed to partially surround and run in contact with the mandrel and a gap is provided in the spiral path of the belts to permit continuous feeding of sheet material to the mandrel to enable continuous operation of the forming apparatus.
Abstract:
A method and apparatus for coating a hollow article with at least two coating materials, said method comprising the steps of applying a first coating material to the article and drying or partially curing at least the surface of the first coating before the application of the second material. Thereafter the two coatings may be fully cured together or alternatively the second coating material may be partially cured in readiness to receive a further coating. The preferred curing means is a gas flame.
Abstract:
A process for the production of a permanently bonded polyester-polyolefin film laminate is disclosed herein. The process involves exposing the surface of polyester or polyolefin film to contact with a flame so as to prime the surface thereof and thereafter coating the primed surface of the film with a layer of a molten polyolefin or polyester, respectively. Flame priming of the polyester or polyolefin film results in a permanent surface modification of the film. Thus, the time lapse between the priming of the polyester or polyolefin film and the subsequent coating with the molten polymer may be a matter of days, if desired.Multi-layer laminates which comprise a substrate-polyester-polyolefin laminate, e.g., paperboard-polyester-polyolefin laminates, can be provided by the process of the present invention by providing a previously formed laminate of a substrate and a polyester film and flame priming the polyester surface of the laminate. Thereafter, a layer of a molten polyolefin is coated onto the primed polyester surface.
Abstract:
A method is disclosed for producing a decorative and artistic effect on a flat surface, preferably a clear, flat surface, by brushing or spraying a colored coating material, such as paint thereon, placing a sheet of flexible film on the coated surface, pressing in place until the coating dries, and then removing the film to leave a decorative patterned coating. The resultant monoprint can be used as a room divider, lamp shade, window presenting the effect of stained glass, or for other purposes. When a clear, flat surface is used, the monoprint formed can be sprayed with a contrasting color and arranged to present the uncoated side for viewing in use. The flexible film can optionally be initially distorted by application of heat, creasing, or otherwise to produce variations in the decorative or artistic effect. When two flat surfaces are coated by application to opposite surfaces of flexible film, a decorative laminated structure is created for use as a window, screen wall, lamp shade, or in any suitable opening for partial transmission of light. Articles produced by this method are also encompassed within the invention.
Abstract:
To simulate the appearance of weathered wood, newer wood is treated with a compound that includes the combination of a first part of an oil-type carrier, a second part of rotten stone and a third part of wax. A surface of the wood is first subjected to a blackening procedure as by burning or dipping in a suitable stain. The surface is then treated with the compound. Thereafter, highlights are developed in the surface by scraping and/or buffing. A somewhat less-aged look also is obtained by suitably staining rough-sawed lumber.
Abstract:
Glassware coating apparatus including an oven and fluidized bed arrangement that preheats, dip coats and cures a thermoplastic shatterproof polymer on ware in a continuous fashion. The apparatus, among other things, includes a gripper device adapted to seize a plurality of ware simultaneously and transfer same through the coating stage. Similarly, there are disclosed techniques and apparatus for pre-heating, curing, applying variable coating thicknesses and transferring and lubricating coated ware.
Abstract:
This invention provides a coating for ferrous metal surfaces, comprised of a blend of high density and low density polyethylene powder. The coating is completed to the desired thickness in one application of the blended powder on a hot (400.degree. to 550.degree. F) ferrous metal surface. The coating may be cured or quenched after application depending on the amount of heat available from the coated object.
Abstract:
A glassware coating process and apparatus including ware handling, heating, coating and transfer equipment that is continuously operable to apply a coating of thermoplastic polymer resin to the exterior surface of the ware. A split chuck has reciprocable ware holding elements which are actuated through a ware sensor. Fluid purge means are incorporated in the chuck whereby to inhibit deposition thereon upon immersion into a fluidized bed of the coating resin. Similarly, the invention incorporates a ware orientation device that accurately aligns the ware immediately prior to the seizure thereof by the clamping mechanism.