Abstract: A method and device for use in the method for forming a reinforcing filamental network is the subject of this application. The network includes a pair of straight filaments (54, 56) which can extend generally parallely with respect to one another and be spaced at a given distance. A serpentine filament (58) is made to sinuate across the straight filaments (54, 56), and can be bonded thereto at intersections by means of a hot melt adhesive which impregnates the filaments (54, 56, 58) and which has a measure of flow potential when subjected to pressure.The device for forming the network includes a cylindrical cam (100) which is disposed for rotation about an axis generally parallel to the axis of one of two pressure rollers (76, 90) which effect cold flow of the hot melt adhesive with which the filaments (54, 56, 58) are impregnated. The cam (100) has a groove (110) formed in its outer surface. A shoe (108) of a reciprocating filament guide (102) rides in the groove (110).

Abstract: A method and device for use in the method for forming a reinforcing filamental network is the subject of this application. The network includes a pair of straight filaments (54, 56) which can extend generally parallely with respect to one another and be spaced at a given distance. A serpentine filament (58) is made to sinuate across the straight filaments (54, 56), and can be bonded thereto at intersections by means of a hot melt adhesive which impregnates the filaments (54, 56, 58) and which has a measure of flow potential when subjected to pressure.The device for forming the network includes a cylindrical cam (100) which is disposed for rotation about an axis generally parallel to the axis of one of two pressure rollers (76, 90) which effect cold flow of the hot melt adhesive with which the filaments (54, 56, 58) are impregnated. The cam (100) has a groove (110) formed in its outer surface. A shoe (108) of a reciprocating filament guide (102) rides in the groove (110).

Abstract: A method and device for use in the method for forming a reinforcing filamental network is the subject of this application. The network includes a pair of straight filaments (54, 56) which can extend generally parallely with respect to one another and be spaced at a given distance. A serpentine filament (58) is made to sinuate across the straight filaments (54, 56), and can be bonded thereto at intersections by means of a hot melt adhesive which impregnates the filaments (54, 56, 58) and which has a measure of flow potential when subjected to pressure.The device for forming the network includes a cylindrical cam (100) which is disposed for rotation about an axis generally parallel to the axis of one of two pressure rollers (76, 90) which effect cold flow of the hot melt adhesive with which the filaments (54, 56, 58) are impregnated. The cam (100) has a groove (110) formed in its outer surface. A shoe (108) of a reciprocating filament guide (102) rides in the groove (110).

Abstract: A process of reinforcing a sheetlike substrate by applying a plurality of linear reinforcements comprising a filamentary core having a pre-coating of "hot melt" adhesive to the substrate with at least one of the linear reinforcements applied in a generally serpentine or waveform pattern to provide both in-machine and cross-machine tensile strength and tear resistance. The present invention is also an improved reinforced sheetlike substrate having the linear reinforcements applied thereon in accordance with the process. In one embodiment, adjacent linear reinforcements are applied in an overlapping or interlocking serpentine configuration onto the substrate. In one embodiment of the process, the sheetlike substrate is conducted along a path defined as the in-machine direction while the plurality of linear reinforcing members are fed through a guide member that is reciprocating transversely with respect to the in-machine direction.

Abstract: A method and device for use in the method for forming a reinforcing filamental network is the subject of this application. The network includes a pair of straight filaments (54, 56) which can extend generally parallely with respect to one another and be spaced at a given distance. A serpentine filament (58) is made to sinuate across the straight filaments (54, 56), and can be bonded thereto at intersections by means of a hot melt adhesive which impregnates the filaments (54, 56, 58) and which has a measure of flow potential when subjected to pressure.The device for forming the network includes a cylindrical cam (100) which is disposed for rotation about an axis generally parallel to the axis of one of two pressure rollers (76, 90) which effect cold flow of the hot melt adhesive with which the filaments (54, 56, 58) are impregnated. The cam (100) has a groove (110) formed in its outer surface. A shoe (108) of a reciprocating filament guide (102) rides in the groove (110).

Abstract: An aqueous adhesive, resistant to humidity and water, which debonds in the presence of strong base, comprises finely divided aluminum, a natural product bonding agent and water.

Abstract: A heat-activated pressure-sensitive adhesive which comprises an aqueous emulsion of finely divided solids comprising a rubber polymer, a resin and a plasticizer, which optionally contains urea, a urea-compound and/or a polyhydroxy compound in the aqueous phase. Substrates such as plastic film, metal foil and cigarette paper may be effectively bonded.

Abstract: A self-adhering elastic comprises a block copolymer having glassy endblocks and an amorphous midblock, a midblock resin and an endblock resin.

Abstract: The disclosed one-part curable polyurethane prepolymer compositions comprise a continuous phase and, distributed uniformly through this phase, a discontinuous phase containing a polyol curing agent of the pentaerythritol type. At moderately elevated temperatures, the polyol phase begins to enter into a curing reaction which has a single exotherm peak. The prepolymers are made from aliphatic or cycloaliphatic polyisocyanates and polymeric polyols. The one-part curable system is stable for long periods at room temperature. The curable polyurethane systems can be used in adhesives, coatings, sealants, and similar applications.

Abstract: At least one algae-produced, substantially pure chemical compound with biocidal activity has been isolated from a blue-green algal (Cyanobacteria) toxin, preferably Scytonema toxin. This biocide appears to be one of the first of its class, since very little is now known regarding algal toxins and any biocides (including any antibiotics) they may contain. A biocide of this invention has activity against harmful blue-green algae such as Anabaena and can be used as, among other things, an algicide with minimal undesirable effects upon the environment of use (e.g. lakes, streams, water supplies, swimming pools, etc.). An ether-soluble, nonsteroidal, anisole-containing biocide of this invention appears to have a molecular weight of 430 or 431, a melting point or range within the range of about 48.degree. to about 55.degree. C., and the empirical formula C.sub.23 H.sub.23 O.sub.6 Cl.

Abstract: An applicator (10) for applying a string or tape (72) coated with a thermoplastic adhesive to a moving substrate (14) is the subject of this patent application. The applicator (10) includes a first roll (28) about which the string (72) is fed. Thereafter, the string (72) is led over a second roll (30). The string (72) is, successively looped about both of the rolls (28, 30) a number of times. One of the rolls (28) is heated by use of a plurality of heating elements (26) embedded in a casting (24) surrounding the roll (28). The second roll (30) is pivotable about an axis and in a plane generally parallel to an axis of elongation of the first roll (28). Loops of the string (72) can, thereby, be spaced axially along the rolls (28).

Abstract: The subject to this patent application is apparatus for mechanically varying the speed of a disk, such as a floor treating pad (18), mounted for rotation about the axis of elongation (20) of a shaft (38) powered by a fixed speed motor. The pad (18) is supported by a hub (40) disposed axially intermediate a flange member (74) fixedly attached to the shaft (38) and a sheave (66) disposed for rotation about the shaft (38), but at a speed different than that of the shaft (38). The invention includes means for keying the hub (40) to either the flange member (74) or the sheave (66), depending upon the desired speed of operation of the floor treating machine (10) of which the pad (18) is a part.

Abstract: A one-package heat curable polyurethane composition, comprising an isocyanate terminated prepolymer liquid phase and a separate solid polyhydroxy compound phase insoluble in the prepolymer phase, and suitable for use as an adhesive. The liquid prepolymer phase comprises the reaction product of an aromatic polyisocyanate and a polyhydroxy compound. The separate insoluble solid polyhydroxy compound phase is dispersed or suspended throughout the liquid prepolymer phase and remains separate until heat cured. The ratio of OH groups in the solid polyhydroxy compound phase to NCO groups in the isocyanate terminated prepolymer liquid phase is less than 2:1. The one-package polyurethane adhesive composition can also be useful as an in-mold coating and an injection molding compound.

Abstract: An apparatus for polishing a floor includes a rotated polishing pad suspended from a housing with a mechanism for maintaining full engagement of the surface of the pad with the floor. This mechanism includes a caster disposed within a centrally-located aperture in the pad and a device, such as a spring, connecting the caster to the housing which increasingly urges the caster and housing away from one another as they progressively approach one another.

Abstract: The disclosed aqueous binder system has a pot life of more than 15 minutes at room temperature and is normally stored as a two-part system. The first part comprises an alkali metal silicate, and the second part comprises a coreactant metal salt of marginal water solubility (at room temperature and neutral pH) which provides reactive divalent metal ions. A rubber latex is normally included in one or both parts, preferably the coreactant (second) part. Preferred coreactants are metal salts of Group II, A or B of the Periodic Table, particularly phosphates, carbonates, or borates of magnesium and zinc. A preferred method of application involves blending the two-part system, spraying it onto a surface, and permitting the sprayed material to cure to a water-resistant layer having a Barcol hardness of at least 10. A low density inorganic filler can be incorporated into the coating to reduce its density below 0.4 g/cc and to provide better insulative properties.

Abstract: It has been found that a layered recording disc having an inexpensive core layer and high quality recording groove-accepting outer layers can be made in a relatively simple manner through an application of the technique known as coextrusion, wherein a common die, e.g. a coextrusion die (10) having a die orifice (11) for a plurality of streams (13, 23, and 33) provides a multilayer coextrudate (60) having a plurality of layers (64, 74, and 84). The coextrudate (60) can be cut into segments (60a) with a suitable cutting means (20). The coextrudate segments can be substantially of record thickness with a circular periphery. Alternatively, coextrudate segments (60b) can be much thicker than a record and much smaller in surface area. In either case, segments can be compression molded into discs (100) having the desired profile and/or grooves.

Abstract: A bonding apparatus for applying a thermoplastic-adhesive coated core material to a moving substrate as disclosed. Heat exchanger guide means directs a continuous length of hot melt strand to an output orifice at a bonding station. The hot melt adhesive is softened by the unique heat exchanger means to its flow point, just before the strand leaves the output orifice. A rapidly replaceable bonding shoe presses the hot melt strand onto a substrate moving past the bonding station, as soon as the heated strand leaves the output orifice, thus bonding the strand to the moving substrate. Biasing means selectively provides presettable compression or tension forces to the bonding shoe, as required by the particular bonding application. Optional cooling apparatus positioned immediately downstream from the bonding station, further compresses the hot melt strand on the substrate and cools the adhesive to bonding consistency.

Abstract: An improved conveyor lubricating system for applying a multi-ingredient lubricating composition to a conveyor. The system includes a holding tank which is operatively connected to a plurality of separate supply tanks where each of the ingredients of the composition are contained in a concentrated form. Pumping bodies are provided for separately pumping each of the concentrated ingredients into the holding tank in any desired ratio. Water is then added into the holding tank to dilute the concentrated ingredients and form the lubricating composition. A pump is provided for pumping the lubricating composition from the holding tank to the conveyor.

Abstract: A viscoelastic hot melt pressure-sensitive adhesive consisting essentially of:(a) about 35 to about 55% by weight of a rubbery block copolymer which comprises a rubbery polyisoprene midblock portion and a plurality of end blocks comprising a crystalline poly(vinylarene);(b) about 25 to 45% by weight of a terpene tackifying resin generally compatible with and generally associated with said midblock portion;(c) about 10 to about 30% by weight of an aromatic, essentially hydrocarbon resin having a glass transition temperature and a softening point above about 115.degree. C., said essentially hydrocarbon resin being generally compatible with said end blocks of said rubbery block copolymer;the proportions of said components (a), (b), and (c) being selected to provide the following pressure-sensitive adhesive and rheological properties:(i) a tensile strength at 500% elongation, determined at 20.degree.-25.degree. C., of at least 50 pounds per square inch;(ii) a 180.degree.

Abstract: The disclosed stripe-applying ("striping") method and apparatus for applying a curable coating composition (preferably the two-part type) to a paved surface comprises a movable vehicle suitable for traveling over that surface. The vehicle carries a first nozzle for applying a pressurized water spray to the paved surface, a second nozzle for applying an air blast to the paved surface, and a third nozzle for applying the coating composition under pressure to the section of the paved surface previously cleaned by the water spray and air blast. In addition, a glass bead applicator drops a plurality of glass beads onto the coating composition after it has been applied to the paved surface. The two components which comprise the coating composition are heated in a system having selectively operable valves for continuously circulating these components when a striping operation is not taking place.