Abstract:
A spiral spray coating method, comprising the step of forming a second pressurizing air flow which is discharged from a number of second pressurizing air holes (13) positioned concentrically with and outwardly-shaped from first pressurizing air holes (12), on the outside of the first pressurizing air flow which is discharged from a number of first pressurizing air holes (12) disposed concentrically with an opening of an adhesive agent hole (11) so as to feed the second pressurizing air flow (K2) to the outside of the first pressurizing air flow (K1) in order to form an air curtain of the second pressurizing air flow on the outside of a spiral of a hot-melt adhesive agent fiber; a spiral spray coating device using the spiral spray coating method.
Abstract:
A slot nozzle die (14) for use with a coating dispenser (10) includes a first die body (88) having a tapered projection (94) and a deflectable tab member (96) horizontally spaced from the tapered projection (94) to define a die seat (102) therebetween. A second die body (104) having a tapered projection (112) is slidably received in the die seat (102) formed in the first die body (88). The tapered projections (94, 112) of the first and second die bodies (88, 104) define an extrusion slot (114) therebetween which receives coating material from the coating dispenser (10). A pair of air blocks (120a, 120b) are respectively mounted to lower ends of each die body (88, 104) to define a pair of air channels (124a, 124b) disposed at an angle relative to the extrusion slot (114). One of the air blocks (120b) is slidably received intermediate the deflectable tab member (96) and the tapered projection (112) of the second die body (104) and cooperates with the deflectable tab member (96) for translating the tapered projection (112) of the second die body (104) toward the tapered projection (94) of the first die body (88) to seal the first and second die bodies (88, 104).
Abstract:
A backpack sprayer for spraying arthropods or arthropod eggs, such as beneficial mites or beneficial insect eggs, or insect eggs containing parasitoids, directly onto plants is disclosed which uses excess air generated by a compressor (13) to produce a coarse or fine spray of an aqueous suspension containing the arthropods or eggs as they exit from a spray gun (23). A stir bar magnet (10c) in a spray tank (10), controlled by a magnetic stirrer motor, keeps the arthropods or eggs evenly suspended in an aqueous solution. The sprayer provides an economical and alternative strategy for the delivery of arthropods such as beneficial mites and eggs to agricultural commodities.
Abstract:
An applicator (58) directs a flow of a liquid (78) toward a substrate (60) and forms droplets that deposit uniformly on the substrate (60). The applicator (58) includes a liquid outlet that directs an elongated distribution of liquid toward the substrate (60), while an impingement fluid is propelled through an adjacent fluid impingement slot against the liquid (78). The impingement fluid changes the confluent liquid flow into fine droplets that deposit uniformly on the substrate (60). This applicator is capable of coating substrates (60) very uniformly, and producing coatings that are less streaky and grainy than spray nozzle applicators. The applicator (58) is capable of depositing liquid coatings over a wide range of application rates and depositing coatings on a wide range of substrates (60).
Abstract:
A one-piece nozzle (14) adapted for use within an adhesive dispenser (10) includes a nozzle body (14) formed with a throughbore (40) having a discharge outlet (44) within a nozzle tip portion (42) which emits a bead of adhesive. A nozzle cap (38) mounts the nozzle body (14) to the adhesive dispenser (10) such that an adhesive passageway (30) within the dispenser (10) communicates with the throughbore (40) in the nozzle body (14) and a plunger valve (22) associated with the adhesive dispenser (10) extends into the nozzle body (14) in position to engage a seat (46) formed at the nozzle tip. A number of air jet bores (110) are drilled in the nozzle body (14), each communicating with an air passage (140) formed between an outer surface (96) of the nozzle body (14) and an inner surface (130) of the nozzle cap (38), which discharge jets of air into contact with the adhesive bead producting an elongated adhesive fiber deposited in a spiral pattern onto a substrate.
Abstract:
Scanning apparatus is provided for scanning a stream of atomized particles comprising a pneumatic valve through which gas can be routed to one or more nozzles to give a scanning action on the stream of atomized particles which routing is externally adjustable and externally programmable.
Abstract:
A corrugated paperboard strength enhancing process includes at least one resin application station located within the confines of the corrugator at a position where it is operable to apply a preselected amount of strength enhancing resin to at least one side of the medium after it has been fluted and most preferably before adhesive has been applied to the medium for securing liner paper thereto. At least one liner is adhered to the set of opposed flute tips. Thereafter the combined board with the resin compound on selected transverse portions of the fluted medium is allowed to cure, under selected temperature and moisture conditions and without the application of pressure that would crush the fluted medium. A suitable resin for the intended purpose is an isocyanate compound. The strength-enhanced corrugated paperboard can be efficiently repulped.
Abstract:
A dosing gun (500) comprising a revolving valve element (518), arranged fixedly in a first casing (506) which is immovably connected with the gun housing (502). The first casing (506) has a second spring-loaded casing (544) linked to it in a mobile way, which contains a hollow cylinder (514) having on its frontal part valve seats (542, 554). The dosing gun (500) can operate with or without a supply of compressed air.
Abstract:
Method and apparatus for high temperature heating, melting, refining and superheating of materials, such as steel scrap, metals, ceramics or glass. The invention provides an economizing method of hydrocarbon fluid fuel combustion in an on going flame in a liquid cooled combustion chamber (9) by separately supplying streams of fuel and at least two oxidizing gases wherein a first oxidizing gas reacts with the fuel, and a second oxidizing gas is directed about the flame core to further react with the fuel, while controlling the flow of the fuel, the oxidizing gases and cooling liquid to provide the required heat input, combustion product chemistry, temperature, velocity, emissivity and combustion block (2) temperature. Also disclosed are burners (1, 20, and 40) for carrying out the invention.