Abstract: A method of and apparatus for manufacturing a mineral fiber insulating web by providing an uncured primary nonwoven mineral fiber web treated with binding agent, conveying the primary nonwoven mineral fiber web along a predetermined path of travel, compacting the primary nonwoven mineral fiber web, severing the primary nonwoven mineral fiber web into at least two secondary nonwoven mineral fiber webs, compressing at least one of the secondary nonwoven mineral fiber webs substantially beyond the initial compaction of the primary nonwoven mineral fiber web, positioning the compressed and remaining of the two secondary nonwoven mineral fiber webs into contiguous relationship to each other, and curing the binding agent to adhere the secondary nonwoven mineral fiber webs to each other thereby forming a cured multi-ply mineral fiber web or strip.

Abstract: Fragrance releasing pull-apart sheets may be more consistently and easily manufactured by coating opposed surfaces with a binder, placing microcapsules between the two surfaces with binder, and adhering the surfaces together with the binder and/or additional binder applied with the capsules.

Abstract: A method of and apparatus for manufacturing a mineral fiber insulating web by providing an uncured primary nonwoven mineral fiber web treated with binding agent, conveying the primary nonwoven mineral fiber web along a predetermined path of travel, compacting the primary nonwoven mineral fiber web, severing the primary nonwoven mineral fiber web into at least two secondary nonwoven mineral fiber webs, compressing at least one of the secondary nonwoven mineral fiber webs substantially beyond the initial compaction of the primary nonwoven mineral fiber web, positioning the compressed and remaining of the two secondary nonwoven mineral fiber webs into contiguous relationship to each other, and curing the binding agent to adhere the secondary nonwoven mineral fiber webs to each other thereby forming a cured multi-ply mineral fiber web or strip.

Abstract: Furniture having genuine stone surfaces is formed of panels of flat slabs of stone bonded by adhesive to underlying supports coextensive with the slabs of stone. The slabs of stone are cut concurrently from a block of stone by means of a gang-saw. Each slab of stone is no greater than about one centimeter in thickness. Articles of furniture constructed of panels with the stone surfaces are comparable in weight and cost to articles of furniture constructed of solid wood, and have surfaces of genuine stone.

Abstract: A process for the preparation of a laminated material including the steps of cutting open an annual lignocellulosic stalk in the fiber direction with a knife; flattening the lignocellulosic stalk by means of a roller press to form a compressed stalk, one face of which consists of its epidermis; arrangement a plurality of the compressed stalks in parallel with each other to form a sheet; coating the sheet with a resin adhesive; stacking a plurality of the sheets coated with the adhesive; and then bonding with heat and pressure by means of a hot press. The laminated material in the form of boards has an equal to or higher flexural strength than conventional plywood or also has excellent sound absorbing and heat insulating properties in comparison with conventional particleboard or fiberboard.

Abstract: A method of manufacture of a foam core board is described as well as vehicle trim panels made from such board. A foam board having a cell structure including a structure with large cells in a center portion is initially formed. This board is skived into two separate panels, each having one surface with relatively large cell structure and wherein said cells have been opened by the skiving process. This surface acts to promote enhanced sound absorption from the foam core board. This board may be laminated with appropriate decorative material and molded to make contoured resilient vehicle trim panels.

Abstract: The invention provides a method for developing a point on one end of a vehicle molding which is initially fabricated as an extruded member of a resinous material of a first color with a uniform transverse cross-section. A longitudinal extending layer of a second color is adhered to a portion of the exterior surface leaving a second longitudinal portion of the exterior surface of the first color. The pointed end is provided by first cutting a wedge shaped section out of one end of the molding, pressing the ends of the molding together in an injection mold and then reforming the end of the molding in the desired pointed configuration by the injection of liquid resinous material into the mold.

Abstract: An insulation suitable for application to building spaces by pneumatic devices comprising a multitude of small pieces of low density fibrous material, the fibrous pieces being uniformly sized and having a hexahedral configuration.

Abstract: A stack of interlocked detachable bags, preferably formed from a thermoplastic foil strip, and each comprising two walls, a front wall and a back wall, preferably at least one handle-shaped incision positioned on one of said walls adjacent an upper filling opening, wherein the individual bags each have an interlock piece and are attached together with the aid of at least one interlock means engaging their interlock pieces, and by means of a row of perforations forming an edge of the interlock piece the individual bags are detachable from the interlocked stack by tearing off. On one of the walls of each bag adjacent an upper filling opening edge of that bag a reinforcing piece, preferably of plastic foil, with the interlock piece is attached so that the interlock piece protrudes above the filling opening edge. Advantageously the inside of the back wall is provided with the protruding interlock and reinforcing pieces.

Abstract: A method of producing a laminated plate comprises the steps of (a) preparing a pair of blocks in each of which a plurality of plate elements overlap each other in an inclined position such that the plate elements have one end portions appearing stepwise at predetermined intervals on one surface of the block and the other end portions appearing flat on the other surface of the block, and (b) interlocking and bonding the two blocks to each other such that the one end portions of the plate elements in one of the blocks and the one end portions of the plate elements in the other block oppose each other in a predetermined positional relationship, whereby a laminated plate opposite major surfaces of which are flat is produced.

Abstract: A method for the preparation of selectively decorated resin films comprises applying a first primer coat to the entire area of the base film, then applying either a masking coat alone or one or more color coats followed by the masking coat, the masking coat applied to an area of the base film that will define the final selective decoration. The masking coated surface is thereafter metalized and the resulting composite is joined to a mask-removing film bearing a pressure-sensitive adhesive having a limited peel strength known as "soft peel". The process is completed by the separation of the respective films, with the mask removing film withdrawing from the base film the unwanted portions of the metal coat and its underlying masking coat, to leave a crisp, patterned decoration.The present process requires no solvents and is therefore environmentally preferred.

Abstract: A method of bonding ink jet printhead components together by coating a flexible substrate with a relatively thin, uniform layer of an adhesive having an intermediate non-tacky curing stage with a shelf life with around one month for ease of alignment of the parts and ease of storage of the components having the adhesive thereon. Transferring about half of the adhesive layer on the flexible substrate to the high points or lands of one of the printhead components within a predetermined time of the coating of the flexible substrate by placing it in contact therewith and applying a predetermined temperature and pressure to the flexible substrate prior to peeling it from the printhead component. This causes the adhesive to fail cohesively in the liquid state, assuring that about half of the thickness of the adhesive layer stays with the flexible substrate and is discarded therewith, leaving a very thin uniform layer of adhesive on the printhead component lands.

Abstract: A process in the manufacture of a mattress for a mattress unit including forming a pattern simultaneously within a surface of each of two bodies of a foamed plastic material in side-by-side juxtaposed position. The surface of each body is cut to present a "checkerboard" convolute pattern.

Abstract: A method for producing stable, layered electrets includes the steps of placing a thin sheet of glassy polymer or copolymer of high molecular weight, such as polyethylene terephthalate, between two, somewhat larger in planform, sheets of polyvinyl chloride and/or polyvinyl acetate formulation, to form a sandwich structure which is then compressed and heated to approximately 300.degree. F. At this temperature the exterior polyvinyl chloride or copolymer sheets are polarized and displaced under pressure over the interior sheet to charge the interfaces of the exterior and interior sheets. The heat, furthermore, bonds the peripheral edges of the larger exterior sheets to each other thus forming a hermetically closed container within which the charged interfaces will reside. Alternatively, two or more sheets of electret (polymer) material may be pressed and heated against each other to a point where plastic deformation occurs but below melting.

Abstract: A method of transferring a retroreflective pattern onto a fabric, wherein a retroreflective pattern transfer sheet comprising a base film, a temporary holding adhesive, a mass of transparent fine glass spheres partially embedded into the temporary holding adhesive, and a reflective film layer which covers the exposed surface of the transparent fine glass spheres and the exposed surface of the temporary holding adhesive present in the gaps between individual adjacent transparent fine glass spheres, is superposed on the surface of a fabric coated with a compression bonding adhesive in a predetermined pattern, with the reflective film layer side put in contact with the fabric surface, the portion of the transfer sheet which is opposed to the compression bonding adhesive into bond with the fabric, an outer portion of the sheet is subsequently stripped off, whereby only the portion thereof which is in bond with the fabric through the compression bonding adhesive is allowed to remain on the fabric to form the retro

Abstract: In a method of basting in the tailoring of clothes wherein an adhesive is used to secure the cloth, the improvement wherein said adhesive comprises as the main component a liquid, addition-reaction-type silicone polymer. Said basting method is applicable to basting interlinings and/or shoulder pads to front bodices, basting two back bodices and the like to simplify and automatize the tailoring process.

Abstract: The method of sealing and bonding faying surfaces of laminated graphite reinforced epoxy plates, including the steps of mixing an uncured epoxy resin with a filler of carbon microspheres, impregnating a layer of spaced glass fibers or cloth with the mixture, positioning the impregnated fibers between the faying surfaces of overlapping plates, fastening the plates together, and curing the resin. When it is necessary to repair the seal, the fasteners are removed and the plates are separated with a wedge at the seal bondline without damaging the plate laminations.

Abstract: An improved method for forming closed burstable pouches having breakable seals. The method includes selection of a laminated polymeric film which has two principal layers--an outer layer which is responsive, and an inner layer which is non-responsive, to a radio-frequency (RF) welding field, the inner layer being of a biaxially-oriented polymeric material such that its cohesive strength in its thickness direction is less than the cohesive strength of the outer layer. The outer layer has a higher melting point than the inner layer. With two sheets of such material placed with their inner surfaces in contact, the breakable seal is formed by applying an RF welding field for a time and at an intensity to heat the outer layers sufficiently to fuse the inner layers by heat transfer from the outer layers without melting the outer layers and without destroying the biaxially-oriented structure of the inner layer.

Abstract: A simplified method for fabricating composite transducers by bonding together plates of active and passive materials to form a laminated block. The active material is preferably a piezoelectric ceramic. Thereafter, a series of cuts are made in the laminated block to obtain a composite plate wherein regions of active material are separated from one another by regions of passive material. The method provides composite transducers having fine structures which can be produced without the difficulty of assembling many small rods or sawing deep, narrow grooves.

Abstract: On-the-spot designed personalized laminated displays such as placemats, menus, posters and the like and the method of manufacturing same is disclosed. The laminated displays of this invention use inexpensive materials and are substantially unlimited in the final design, yet may be made or fabricated to order in a very short period of time while a customer waits. The method includes the selection of a backing sheet, the addition of selected decorative indicia, the addition of details and the like to the backing sheet, and adhesively securing personalizing alpha-numeric indicia, such as proper names and the like neatly, quickly, and effectively to the backing sheet to form the desired personalized display. The personalized display is then adhesively encased and sealed between two sheets of a transparent plastic film or the like for protection.

Abstract: Self-developing photographic film units are disclosed having an IIR sheet cut from an elongate web of material, a second sheet cut from an elongate web of material, and a mask sheet cut from an elongate web of material and spacer means between the IIR sheet and the second sheet. The mask sheet and spacer means serve to seal the IIR sheet and the second sheet together along opposite side margins thereof. A container of processing composition and a trap are disposed at opposite end margins of the film unit.The IIR sheet is strippable between a portion thereof bearing an image after processing and other components of the film unit including a non-image-bearing portion of the IIR sheet overlying the container. Preferably the stripping occurs between photosensitive layers and an image-receiving layer of the IIR sheet. The IIR sheet has a discontinuous slit between the image-bearing portion and the non-image-bearing portion.

Abstract: A tool for use in the reciprocating manipulation of wire to cut through an adhesive compound supporting a replaceable item such as an automobile windshield comprises a handle portion from which projects a blade having a curved marginal wall having a trough along which the wire to be handled is permitted to extend. The tool is equipped with guide surfaces to facilitate location of the wire into its trough and with lock nut means for anchoring a free end of the wire at a location convenient to the guiding action of said guide surfaces.

Abstract: A new artificial veneer resembling expensive natural wood veneers can be manufactured by a new method from an inexpensive raw log, wherein a wood-meal containing veneer is first obtained by slicing in quartersawn grain direction a primary artificial flitch of many material veneers of the inexpensive raw log stacked and bonded with a wood-meal layer interposed between them, and many of the wood-meal containing veneers are stacked and bonded, with the material veneers alternately interposed as they stand or as further processed, into a secondary curved artificial flitch, which is sliced in flatsawn grain direction into the new artificial veneers presenting a grain pattern similar to that of the expensive wood with minutely raised and recessed uneven surface at simulated porous zones by the wood-meal containing veneers.

Abstract: A cushion material and method of making the same, in which a soft polyurethane foam is cut into a slab in a predetermined form; applied to or injected into this polyurethane foam slab at a predetermined portion thereof a bonding agent or forming keeping binder which has a property to be solidified in reaction under certain conditions; said slab is shaped as compressed in a pair of forming dies into a predetermined cubic form, or integrally bonded on a cushion layer constituted by said slab of polyurethane foam another cushion layer made of polyurethane foam chips shaped in a predetermined cubic form by chopping or comminuting soft polyurethane foam scrap into chips, applying a bonding agent to them, and compressing them in a pair of forming dies.

Abstract: A process of producing a tufted pile fabric comprises providing a primary backing which may be woven, non-woven or knitted fabric and containing for example polypropylene, polyester, polyamide, jute or viscose rayon, applying a meltable fibrous layer to both sides of the primary backing, preferably by needling fibres into the backing, inserting pile tufts into the primary backing so that parts of the pile tufts extend through backing and the meltable fibrous layers and melting the fibrous layer which is on the side of the backing opposite the pile forming surface of the tufts to secure the tufts to the backing and provide an anchor coat for the fabric. The meltable fibre may be polyamide fibre with a melting point in the range 80.degree.-150.degree. C. and may conveniently be Grilon K115 (Grilon is a Registered Trade Mark).

Abstract: A laminated decorative tile particularly for flooring purposes, is made by forming a base layer of granulated cellulosic material in a matrix of fusible plastics, and placing on the base layer a thin decorative layer of cellulosic material with natural holes and recesses therein. After a film of fusible plastic has been applied on the decorative layer the laminate is hot pressed and then immediately cooled in a cold press. The tile obtained has a pleasing appearance because the granules of the base layer have been forced up, in the hot pressing operation, into the holes and recesses of the decorative layer, filling out these holes and recesses. In this embodiment the tile has a smooth wear resisting layer surface but this surface can be provided with a relief pattern such that it conforms to the structure of the decorative layer, if the tile after cooling is heated in a free state, i.e. without press plates.

Abstract: The invention relates to a process and apparatus for making a thermoplastic polymer sheet and particularly a thermoplastic polymer netting structure. It further relates to a process and apparatus for splitting a thermoplastic polymer sheet or net structure so as to divide the sheet or net at the center thereof into two thin sheets. According to the invention, a previously formed plastic sheet or netting structure is reheated and then placed between two opposed heated smooth surfaces such as metal rolls. The sheet or net is heated to a temperature within the range of temperatures wherein the adhesion of the resin forming the sheet to the metal rolls is good and where its cohesion is poor. The opposed faces of the sheet or net structure adhere to the heated smooth surfaces. The opposed heated surfaces are separated; this causes the sheet or net to split in half to follow each surface.

Abstract: Disposable receptacles for storing articles in sterile condition and having breather means integral with the walls thereof, as well as apparatus and methods for making such receptacles and the materials therefor, are disclosed. The receptacles are fabricated of a laminate comprising a layer of breathable barrier material such as paper and a layer of thermoplastic, polymeric material such as polyethylene. The breather means may be made by heat sealing the thermoplastic layers of a pair of laminated sheets together at small, selected areas and then separating the sheets causing localized delamination of the layers and the formation of ruptured, blister-like projections in the thermoplastic layers at the heat seal positions.

Abstract: Disclosed is a film-paper fiber layer laminate comprising a film and a very thin paper fiber layer bonded to the surface of the film. This laminate is prepared by bonding films to both surfaces of a paper so that the adhesive bond strength between the film and the paper is higher than the failure strength of the paper fiber layer and separating the films by delamination. This film-paper fiber layer laminate is excellent in the transparency and dimension stability, and the tearing strength of the film per se is completely retained and the laminate is suitably used as a tracing paper.

Abstract: A method of manufacturing artificial wood veneers comprises a step in which an artificial flitch formed of laminated material veneers respectively cut out of a certain kind of inexpensive natural wood is sliced in the direction of obtaining straight grain pattern to obtain a collected veneer in which mutual joining surfaces of the material veneers extend in parallel with each other and in the thickness direction, and a step in which many of the collected veneers thus obtained and material veneers cut out of another kind of natural wood are laminated, pressed and collected to form another artificial flitch which is sliced in a direction of obtaining a flat or flowered grain pattern which is very similar to that of a high grade natural wood.

Abstract: Disposable receptacles for storing articles in sterile condition and having breather means integral with the walls thereof, as well as apparatus and methods for making such receptacles and the materials therefor, are disclosed. The receptacles are fabricated of a laminate comprising a layer of breathable barrier material such as paper and a layer of thermoplastic, polymeric material such as polyethylene.The breather means may be made by heat sealing the thermoplastic layers of a pair of laminated sheets together at small, selected areas and then separating the sheets causing localized delamination of the layers and the formation of ruptured, blister-like projections in the thermoplastic layers at the heat seal positions.

Abstract: An insulation suitable for application to building spaces by pneumatic devices comprising a multitude of small pieces of low density fibrous material, the fibrous pieces being uniformly sized and having a hexahedral configuration.

Abstract: A method of manufacture of a tapered wood beam, such as an I-beam, is described. With such method an I-beam of uniform width including a web member of uniform width and a pair of first flange members attached to the opposite sides thereof, is first produced and then cut into two portions by sawing the web member of such beam along a diagonal line to form two tapered web members each attached at one side to a first flange member. The resulting I-beam portions are then assembled by releasably fastening, such as clamping, the first flange members together in back to back relationship so that the sawn edges of the tapered web members are facing outwardly and parallel to form an assembly of substantially uniform width.

Abstract: Sheet-like material, such as wallpaper, posters or labels, can be stripped dry from surfaces to which they have been bonded after adhesive layers (applied in an aqueous medium) have dried. Adhesives which contain film-forming, water-soluble or water-swellable polymers are used. Separate layers containing two different adhesive polymers, particularly polysaccharide derivatives, are provided between the sheet-like material and the surface to which it is to be bonded, one of the two layers containing at least one non-ionic polymer and the other containing at least one ionic polymer. The invention includes the use of these adhesives (containing different film-forming, water-soluble or water-swellable polymers) in preparing dry-strippable sheet-like material and sheet-like material, such as wallpaper, posters or labels, having adhesive layers which can be reactivated by moistening with water and which comprise these adhesives.

Abstract: The invention relates to a method of cutting thin laminae of stone, e.g. marble, which comprises bonding a backing layer to the opposed faces of a slab of stone, supporting the slab with backing layers attached, in an upward position on its edge, cutting the slab along a cutting plane parallel to and midway between the opposed faces of the slab to a depth which is about half the depth of the slab, tumbling the slab on to its opposite longitudinal edge, and cutting through the remainder of the depth of the slab to leave a lamina of stone adhered to each backing layer. The invention also includes apparatus for carrying out the aforesaid method, comprising a saw having two disc blades, a bogie movable beneath the saw and having a pair of vacuum-operated slab-gripping devices each of which is adapted to support a slab upwardly on its edge, and a second bogie movable in a direction transverse to the first bogie and carrying means for tumbling a slab supported on one longitudinal edge, through 180.degree.

Abstract: Visible index strip rolls of a novel, cost effective construction; and methods and machinery for manufacturing those rolls.

Abstract: A graphite containing composite structure having a fastener area for joining the composite to other structures terminates the graphite reinforced laminate adjacent to the fastener area. Kevlar reinforced laminates abut the graphite laminate and extend over the fastener area and are further reinforced with Kevlar laminates that overlap the graphite then extend over the fastener area.

Abstract: A product and method for making a patterned area in a pile rug in which pile yarn is carved out and removed to form a trough-like area, and one or more fabric pattern pieces having a total area and shape coinciding with the carved out trough-like area is inserted into the trough-like area and adhesively bonded in place. The top surface of the fabric pattern piece is distinct in either color, texture, material, or pattern from the main pile surface to produce contrasting patterns in the surface of the rug. The fabric pattern piece may be a separate pile strip including its own base fabric and pile yarn of different color, texture, material, height, or other distinguishing characteristics from the pile yarn of the main body of the rug. The method is particularly adapted for forming linear patterned insert pieces along the borders of an area pile rug.

Abstract: A method of producing a shoulder pad blank having a thick-walled portion and a thin-walled portion comprising cutting a sheet of shoulder pad stock material sinusoidally into two intermediate blanks each having a plurality of ridges spaced a predetermined distance from each other, and then cutting the ridges sinusoidally along their length.

Abstract: This invention is concerned with the tack spinning of materials and has particular reference to the formation of tack spun materials by applying a theromplastic polymer to a backing or carrier sheet to form a pattern or layer thereon and then heating the layer and contacting the layer with a second surface whereby separation of the carrier from the second surface results in separation of the thermoplastic polymer within its plane to draw fibres therefrom on progressive separation. The preferred embodiment of the invention involves two backing sheets prepared between a pair of nip rollers to form a sandwich structure with a layer of thermoplastic tack spinnable material and separating the same on the downstream side of the nip to provide the fibres disposed substantially transverse to the plane of the carrier sheet. The invention also describes novel apparatus for performing this operation.

Abstract: Fibrous glass blowing insulation is made by slitting and crosscutting a blanket of fibrous glass wool into small columns and conveying the columns to a bagging machine, the columns normally breaking up at random during conveying and packaging into approximate cubes and smaller flakes or prisms of various thicknesses.

Abstract: Compound semiconductor bodies are formed by bonding a layer of supporting material to the two opposite faces of a semiconductor wafer and then cutting the semiconductor wafer into two parts in a plane parallel to said faces. The cut surface of each part is then polished.

Abstract: The invention discloses a method of separating a glass mask from a pellicle ring adhesively mounted thereon. This is accomplished by maintaining a coolant in contact with the mask for a period of time sufficient to cool the adhesive bond between the mask and pellicle ring to below its embrittlement temperature so that when a shearing force is applied to the ring with respect to the glass mask will cause shearing of the adhesive bond at the adhesive glass mask interface. When pressure is applied to the ring across the adhesive, separation at the surface of the mask occurs and the ring is released from the mask without damage to the mask or the ring and without leaving significant amounts of adhesive on the surface of the mask. Pellicles removed in this manner can be rebonded at a later time to a glass mask using the same adhesive and without using additional adhesive.

Abstract: Visible index strips which may or may not be preprinted and which can, at least in most cases, be produced at a lower cost than previously patented index strips. The index strips are of multi-ply construction with the plies typically, but not necessarily, being made of paper.

Abstract: A thin wall extruded flexible web is provided with laterally spaced longitudinally extending complementary resiliently flexible interlocking fastener profiles having an imperforate gusset forming web area therebetween which is collapsibly folded into a gusset extending in one direction away from the profiles. Portions of the plastic web are folded into free terminal digitally manipulatable bag mouth pull flanges projecting to a suitable length in the opposite direction from the profiles, with the remainder of the plastic web being collapsed toward the gusset into bag forming side wall panels and extending to a substantially greater length than the gusset for providing a substantial bag pouch into which the gusset projects only a limited extent, with the fastener profiles being then secured together into interlocking but releasable fastener relation. Several embodiments of the method are disclosed. Apparatus for practicing the method is disclosed.

Abstract: A machine and method comprising a stack of cards, a stripping feeder for stripping the bottom card from the stack and moving a series of such cards with an intermittent motion to a series of feed rollers which convert such intermittent motion into a constant velocity and for spacing the cards one from another. A tape coated with magnetic material is laid on the surface of each card by a guiding device after the card has passed through the feed rollers and the combination is fed between a heated roller and a reaction roller which are driven synchronously with the cards. The heated roller is pressed against the cards at a constant pressure exerted by an air cylinder to seal a portion of the magnetic coating to each card.

Abstract: A high yield technique for converting normally-unusable round logs of balsa or other species of wood whose diameter is less than about 4 inches into large rectangular panels. The raw logs are first peeled to expose the wood and are then cut into round pieces of a desired length. The pieces, after being kiln dried, are assembled into a block, the pieces being coated with a curable adhesive and being subjected to compression in orthogonal directions until the adhesive is cured and the pieces interlaminated to provide an integrated stock block. The stock block is then divided into panels of the desired thickness and grain direction.

Abstract: Fabrics having strength despite low bulk density and comprising at least one reinforcing layer of textile-length fibers, at least one layer of short bulk fibers and a bonding agent distributed throughout said fabric layers. Also a process for producing a fabric having a layer of such bulk fibers disposed between two of such reinforcing layers and a process for producing a fabric having a surface layer of such bulk fibers wherein a multi-layered structure containing an interior layer of such short bulk fibers is split along a continuum of lowered bonding agent concentrations at locations predetermined by controlled heating of the structure.

Abstract: A two component removable adhesive hanger is disclosed which has a hook support component with a bifurcated end folded to form a pair of hook support legs and adhesively secured to a backing sheet component, the backing sheet component having adhesive means thereon to secure the hanger assembly to the wall, or similar surface. A hook member is supported by the hook support legs to enable the hanging of an article thereon. The backing sheet component extends downwardly beyond the hook support legs so as to provide an increased adhesive area and to prevent the hook from bearing directly against the surface to which the hanger is attached. The hanger is removable by manually separating the hook support component from the backing sheet component and subsequently dissolving the backing sheet by the application of water. Both the hook support component and the backing sheet component may be made from water dissolvable paper or the hook support component may be made from metal, plastic or like material.

Abstract: A respirator filter is formed of felt impregnated with rosin, which is fractured throughout and is characterized by loosened fibers at one surface thereof. The method of forming the filter entails splitting a batt with fractured rosin impregnation to separate and displace the fibers at the plane of cleavage from their prior felted position.