Abstract: A first film having a low adhesion to a base material (substrate) is deposited on a base material. Pores reaching at least the surface of the base material are then formed through the first film at a high pore density (porosity), for example, according to photolithographic etching technology. Thereafter, a second film having a high adhesion to the base material is formed over the porous first film to fix, or secure, the porous first film to the base material. Recesses may be formed in a surface portion of the base material to further improve the fixation of the porous first film to the base material.

Abstract: An improved insulation wrap is provided with consists of a first layer of flexible material. A second layer of flexible material is secured to the first layer, so as to form a bubble sheeting having a plurality of cavities therebetween. A liquid with reflective particles is carried within the cavities. In one instance cold can be induced into the liquid and in another instance heat can be induced into the liquid, to maintain a desired temperature therein, depending on application and use of the bubble sheeting.

Abstract: The invention provides elastic fabrics which exhibit low extensibility in the machine direction and have substantial elastic properties in the cross-machine direction. The fabrics of the invention include an elastic layer and a fibrous layer which are combined together. The fibrous layer is composed of a plurality of thermally activated binder fibers or filaments oriented substantially in the machine-direction of the fibrous web. The fabrics of the invention can be manufactured and processed more readily than fabrics which are elastic in both the machine direction and the cross-machine direction.

Abstract: An apparatus for leak testing a garment, such as an over-water flying suit formed of a waterproof material, comprises a closure plug (4) for closing the neck of the garment and clamps (36, 38, 40, 42) for holding it in place. Clamps (26, 28) close other openings in the garment to allow it to be inflated, usually turned inside out to simulate exposure to water immersion. A mixture of water and compressed air is sprayed into the inflated garment via nozzles (18). The inflated garment is then inspected visually for leaks, and may be raised to an upright position to facilitate inspection. A restraining cage (70) can be used to prevent damage by stretching during inflation.

Abstract: Method and apparatus for producing a bed covering or the like comprised of a first thermoplastic web, a pair of fibrous mats of substantial loft, said web and mats being bonded together in accordance with a quilted pattern utilizing a thermoelectric bonding technique. The bonding layer, which is preferably polyurethane or a derivative thereof, forms an excellent bond with both the web and the fibrous mats. The fibrous mats provide excellent moisture absorbency and are breathable since the fibrous mats are bonded to the web only at the limited areas defined by the pattern. The first web provides an excellent waterproof barrier, while the mat provides an array of puffed-up regions each delineated by the bonding pattern to yield and aesthetically appealing cover which may be used with either fibrous web exposed.

Abstract: A multi-ply, re-sealable label intended for retail use to provide extended text and graphics for consumer information. The label construction includes multiple plies of flexible printed materials using bonding agents and release coatings which allow for numerous openings and pre-closures. The label incorporates a consumer-friendly peel-tab for easy opening and re-closure, materials with a natural "memory" to facilitate re-closure and re-sealability without the use of a tacky adhesive.

Abstract: A composite laminar structure for producing complementary images in a frangible image-forming substance, and having a strengthened tab portion for facilitation of the separation of the respective sheets of the laminar structure without detachment of the tab portion is described. Thermal imaging composite structures and a method for preparing structures suited to the production of high resolution images in frangible image-forming substance, and especially adapted to sheet separation by mechanical apparatus, are described.

Abstract: A process for making nonwoven fabric including the steps of meltspinning continuous multicomponent polymeric filaments, drawing the multicomponent filaments, at least partially quenching the multicomponent filaments so that the multicomponents have latent helical crimp, activating the latent helical crimp, and thereafter, forming the crimped continuous multicomponent filaments into a first nonwoven fabric web. By crimping the filaments before the web formation, shrinkage of the web after formation is substantially reduced and the resulting fabric is substantially stable and uniform. In addition, the resulting fabric can have a relatively high loft. The crimp activating step can include heating the multicomponent filaments and preferably includes drawing the multicomponent filaments with a flow of heated air to activate the latent helical crimp.

Abstract: In accordance with the invention, the device is provided for constructing a temporary cover for a drain opening surrounded by a framing surface of horizontal, curved or irregular shape, comprising M sheets of flame and/or chemical resistant materials in broad surface contact defining coextensive top and bottom surfaces, said top and bottom surfaces each including a smooth, non-quilted central section and an outer edge section in integral contact with said central section, said outer edge sections together defining a series of undulations therebetween, weighted chain means inserted within said series of undulations so as to add loft and weight as a function of radial extent whereby sealing pressure of said bottom surface relative to an associated horizontal, slightly curved or irregular attaching surface is surprising strong. Method steps related to use and manufacture are also recited.

Abstract: An elastic film is provided with non-elastic regions and elastic regions formed from a multi-layer film of an elastomeric layer and a relatively inelastic layer (s).

Abstract: Radial block copolymers characterized by the formulas: (1) (pS-pI).sub.n X and (2) (pS-pI-pB).sub.n X where pS is polystyrene, pI is polyisoprene, pB is butadiene, X is a residue of a multifunctional coupling agent used in the production of the radial block copolymer, and n is a number greater than 2 representative of the number of branches appended to X; hot-melt adhesive compositions constituted of said radial block copolymers, and articles of manufacture produced therefrom. These copolymers possess blocks of high average molecular weight polystyrene (10,000 to 25,000) and an overall average molecular weight (90,000 to 380,000) such that when blended in requisite proportions with a compatible tackifier resin, preferably also a secondary tackifying resin or plasticizing oil, and stabilizer, superior hot-melt adhesive compositions can be formed.

Abstract: Antistatic spunbonded nonwoven fabrics are provided. The fabrics of the invention include a plurality of substantially continuous electrically nonconductive filaments formed of a thermoplastic polymer, a plurality of electrically conductive filaments distributed among the electrically nonconductive filaments throughout the fabric, and a multiplicity of discrete bond sites bonding together the electrically nonconductive and the electrically conductive filaments to form a coherent fabric.

Abstract: Disclosed is an anisotropic elastomeric nonwoven fibrous web composed of a substantially homogeneous distribution of elastomeric meltblown fibers that are physically aligned along one of the planar dimensions of the web. The anisotropic elastomeric nonwoven web of meltblown fibers has a strength index of at least about 2. Also disclosed is process of making such an anisotropic elastomeric nonwoven web of meltblown fibers as well as a composite elastic material which contains an anisotropic elastomeric nonwoven web of meltblown fibers.

Abstract: There is disclosed a thermally bonded spunbond web of thermoplastic filaments and a nonwoven fabric laminate comprising an internal layer of meltblown thermoplastic microfibers sandwiched between two layers of spunbond thermoplastic filaments. The spunbond web and the spunbond layers of the fabric laminate consist of thermoplastic filaments which are formed from a mixture of a thermoplastic polymer and an effective amount of a nucleating agent. The layers are bonded by thermal spot bonding. In the preferred embodiment, the thermoplastic polymer is polypropylene with a melt-flow rate of at 230 .degree. C. of or greater than 12 grams per ten minutes. Also in the preferred embodiment, the nucleating agent constitutes from about 0.1 to 0.3 percent by weight of the mixture of polypropylene and nucleating agent.

Abstract: A laminated non-woven fabric comprising a laminated material of an intermediate layer of a melt-blown non-woven fabric obtained by melt-blowing an olefin-type resin, an inner and outer layers of a spun-bonded non-woven fabric which chiefly consists of polyester-type fibers and in which the fibers are bonded together locally and at a coarse density, wherein the fibers constituting the inner and outer layers are inserted in the melt-blown non-woven fabric and are intermingled with fibers in the melt-blown non-woven fabric or in the spun-bonded non-woven fabrics of the opposite sides, so that the layers are coupled together as a unitary structure, and a process for producing the same.

Abstract: An extruded connector strip is described and more particularly, but not exclusively, for use as a weatherstrip connector. The connector strip has an elongated attachment body which has a flat rear attachment wall from which a pair of spaced-apart parallel flexible spacer ribs extend outwardly and sloped towards opposed elongated end edges thereof. An adhesive transfer tape is securable to at least one or more flat portions of the rear attachment wall to secure the connector strip against an object. The flexible spacer ribs permit the attachment body to be located over a connecting surface of an object to which it is intended to be secured while preventing the outer adhesive surface of the transfer tape from contacting the connecting surface until pressure is applied to the attachment body which causes the spacer ribs to flex and the outer adhesive surface of the tape to contact the connecting surface to adhere thereto.

Abstract: A flexible, air permeable, high temperature resistant, bacteria-impermeable packaging material is described. The packaging material is preferably made of nonwoven polyester layers on either side of and bonded to a microporous membrane. One nonwoven is bonded to the membrane with a thermoplastic adhesive.

Abstract: The Padding Element is created by two synthetic foil runs (1, 2) arranged one over the other and which are connected by means of first welding seams (3) and second welding seams (4). In each case two adjacent first welding seams (3) and second welding seams (4) create a chamber which during the manufacturing process of the Padding Element can remain unfilled with air, be partially filled with air, or completely filled with air, as required. In this manner Padding Elements can be produced with configurations individually adaptable to the object to be packed (6). The Padding Element is preferably used for at least three-sided enclosure of the object to be packed (6) and comprises, rather like a book cover, a top cover (7), a back (9) and a bottom cover (8). The Padding Element offers the advantage of requiring little material to create appropriately configured packing elements, with all the corresponding benefits, whereby space-saving disposal after use is effected by slitting open the air-filled chambers.

Abstract: The invention relates to a novel type of polyolefine yarns with good performance in the manufacture of rugs and carpets, made-up by admixing polypropylene filaments with polyethylene filaments, and by subjecting said filaments mixture to a temperature of from 125.degree. C. up to 130.degree. C., which substantially equals the melting temperature of the polyethylene filaments, whereby said polyethylene filaments become melted while the polypropylene filaments, with higher melting point, remain solid and stable, and with said melting of the polyethylene filaments constituting welding points for said polypropylene filaments, bulking and shaping the resulting yarn.

Abstract: The present invention provides a composite elastic necked-bonded material including at least one necked material joined to at least one elastic sheet. The composite elastic necked-bonded material is stretchable in a direction generally parallel to the direction of constriction or necking of the necked material. Also disclosed is a method of producing a composite elastic necked-bonded material by necking a neckable material and then joining the necked material to an elastic sheet.

Abstract: Utilizing just five different types of sheets, multipart carbonless business forms may be printed with non-impact printers and then assembled together without using line hole punched sheets and intermediate parts. The CB sheets have an adhesive strip (continuous or discontinuous) on the CB face spaced a first distance from a sheet edge. There are first and second CF sheets, the first CF sheets having an adhesive strip (preferably linear, and continuous or discontinuous) on the CF face spaced a first distance from an edge, and the second CF sheets having an adhesive strip on the CF face thereof spaced a second distance from the edge. First and second CFB sheets are provided, the first CFB sheets having an adhesive strip on the CF face spaced the first distance, and an adhesive line on the CB face spaced the second distance; and the second CFB sheets having the adhesive strips vice-versa. The sheets are fed, in order, from trays of a non-impact (e.g.

Abstract: To produce a flexible material comprising a carrier with active particles fixed thereon by adhesive points, the adhesive points are applied to the carrier when the carrier is of larger area than in its final condition, whereby the adhesive points with active particles adhering thereto are brought closer together in the final condition of the material than when the adhesive points were initially applied.

Abstract: The invention provides composite elastic nonwoven fabrics and the process of making them. The composite elastic fabrics of the invention include an elastomeric net and at least one fibrous web including binder fibers and which is intimately hydroentangled with the elastomeric net. At least a portion of the binder fibers in the hydroentangled fibrous web have been thermally activated thereby bonding the hydro-entangled web into a coherent, substantially unitary structure encompassing the elastomeric net.

Abstract: Disclosed is an elastic nonwoven web containing a coherent matrix of fibers formed from an extrudable blend composed of an elastomeric A-B-A-B tetrablock copolymer where A is a thermoplastic polymer block and where B is an isoprene monomer unit hydrogenated to substantially a poly(ethylene-propylene) monomer unit. The elastic nonwoven web adapted to have an elastic modulus of less than about 1.25 which is locally constant during elongation of the web up to about 250 percent. The elastic nonwoven web may also include at least one type of nonelastic fibers and/or particulate materials distributed within or on the matrix of elastomeric fibers. The elastic nonwoven web may be incorporated into a multilayer material and/or may be a component of a composite elastic material in which the elastic web is joined to a gatherable layer at spaced apart locations so that the gatherable layer is gathered between the spaced-apart locations.

Abstract: Improved wood fiber mat comprised of a mixture of thermo-mechanically processed wood fibers and synthetic fibers.

Abstract: A composite transversely plastic interconnect for a microcarrier produces a carrier-to-substrate bond having low electrical resistance and high mechanical strength, significant bond height to mediate TCE mismatch between dissimilar carrier and substrate materials, and sufficient gap between the carrier and the substrate to permit effective post solder cleaning of the interconnect. A contact array consisting of solder balls is placed directly onto either of a carrier or a substrate interconnect surface with a stencil positioned to the chosen interconnect surface. The solder balls may have a selected melting temperature. Additionally, the solder balls may have a metallic coating, such as nickel or copper, or molten solder. The carrier and substrate are joined by mating an interconnect surface of each and applying heat. Solder paste may be applied to one of the interconnect surfaces to add additional height to the joint and compensate for lack of coplanarity between the carrier and the substrate.

Abstract: A disposable body towel includes a tie and apertures for retaining the towel around a bather. The disposable towel comprises a flexible substantially planar non-woven laminated sheet having top, bottom and side edges and includes a plurality of fibrous water absorbent cellulose plies. The sheet includes an outer ply and an inner ply, wherein the outer ply is water absorbent. The sheet possesses sufficient structural strength when wet to resist degradation in the presence of liquids and is sized to substantially cover a body. The inner and outer plies are bonded together by biodegradable resin at the side edges, thereby reinforcing said side edges for providing additional resistance to tearing. The sheet includes an adjustable tie attached to said top edge and apertures along said top edge for securing the towel about the body as said towel is positioned to substantially cover the body.

Abstract: Adhesive beads comprise a core comprising a pressure sensitive adhesive material and an essentially discontinuous organic polymer disposed about the core. The beads are free-flowing at room temperature. Upon application of heat and/or pressure the core is activated and blends with the coating to provide a pressure sensitive adhesive.

Abstract: A selectively adherable paper-product sheet having on its back surface a concealed repositionable adhesive which is selectively revealable. The selectively adherable paper-product sheet comprises a single paper-product sheet having a front surface, a back surface, a main portion and a foldable border portion. The foldable border portion is folded to the back surface of the main portion and in contact therewith so that the back surface of the border portion and a portion of the back surface of the main portion have respective interfacing surfaces. A repositionable adhesive is disposed between at least a portion of these interfacing surfaces such that the folded border portion is releasably retained in a folded configuration. As a result, a paper-product sheet having a selectively-concealable repositionable adhesive on its back surface provides a convenient sheet of desired weight with selectable adhesive or non-adhesive characteristics as desired by a user.

Abstract: A flexible metallized polymer film cover provides environmental protection of electronic assemblies such as circuit card assemblies which are susceptible to external environmental factors which can impede functional performance and reduce reliability. The fully integrated cover provides this protection and also allows for circuit repair and rework in such a manner as to make cover removal and reseal economically attractive. The use of a metallized polymer film in the form of a two layer film, with two intimately bonded layers one being electrically insulative and the other metallic, provides environmental and electrical protection of the enclosed assembly. The variables of film materials and thicknesses allow for specific cover designs to be fabricated to meet various requirements for assembly protection. The flexible film nature of the cover allows for strict conformance to underlying devices and less dimension and weight for the assembly.

Abstract: The invention provides a melt-blown non-woven fabric obtained by melt-blowing an ethylene-.alpha.-olefin copolymer having a density of smaller than 0.900 g/cm.sup.3 and a crystallinity of from 5 to 40% or by melt-blowing a resin composition which chiefly comprises said copolymer, a laminated non-woven fabric obtained by laminating as a unitary structure a dry-type non-woven fabric on the melt-blown fabric that is obtained by melt-blowing said copolymer or the resin composition which chiefly comprises said copolymer, and a cataplasm which comprises the non-woven fabric obtained by melt-blowing said copolymer or said resin composition which chiefly comprises said copolymer, a dry-type non-woven fabric laminated on said melt-blown non-woven fabric, and a medicine layer applied onto said dry-type non-woven fabric. The non-woven fabric or the laminated non-woven fabric has excellent elastic property, i.e.

Abstract: A dicing-die bonding film comprising an ultraviolet-transmitting substrate having provided thereon an ultraviolet-curable pressure-sensitive adhesive layer and an adhesive layer in this order, the pressure-sensitive adhesive layer having been partly ultraviolet-cured to have cured parts and uncured parts. The film has a well-balanced combination of a holding power for supporting a semiconductor wafer during dicing and release properties for enabling cut chips to be easily released together with the adhesive layer so that even large-sized chips as larger than 10 mm.times.10 mm can easily be picked up.

Abstract: A silica gel based heat-resistant and weatherproof antimicrobial composition having an aluminosilicate layer on the surfaces of pores in the silica gel as substituted by silver and an optional antimicrobial metal, said composition containing ion-exchangeable metals that are chiefly an alkali metal and that are present in an amount of up to 2.57 mmol per gram of said composition on an anhydrous basis.

Abstract: A method of forming a non-woven material includes blending both synthetic and wool fibres in a web and stabilizing the web by utilizing a bonding medium to form dispersed bonds between the fibres. The wool fibres are subjected before formation of the web to a pretreatment effective to modify the epicuticle of the wool so as to substantially increase the surface energy of the wool fibres without destroying their integrity to an extent sufficient for the wool fibres to accept the bonding medium in the web. The dispersed bonds thereby include bonds with wool fibres substantially effective to hold the wool fibres of the material in the web.

Abstract: A spun bonded nonwoven web having spaced autogenous spot bonds A has continuous ribs B of filaments therebetween extending axially in the machine direction as well as continuous ribs C extending axially in the cross direction throughout the web, said nonwoven web having been subjected to axial stretching and elongation with increased area and reduction in basis weight by at least about thirty (30%) percent.

Abstract: An expandable structural member comprises two outer skin members, a plastically deformable reinforcing layer arranged between the two outer skin members, and a foamable polymer composition coated on at least one of each adjacent surface of the reinforcing layer and the respective outer skin member. Each adjacent surface of the reinforcing layer and the respective outer skin member contact one another and are intermittently bonded to one another, with the intermittent bonds on one surface of the reinforcing layer being non-aligned with the intermittent bonds on the other surface of the reinforcing layer. Additionally, the foamable polymer composition is foamable by application of heat to the structural member, whereby the foamed polymer resulting from application of heat to the structural member expands the outer skin members from contact with the reinforcing layer at non-bonded areas and plastically deforms the reinforcing layer into a three-dimensional reinforcing configuration.

Abstract: The thermobonding interlining is a nonwoven covered on one face with dots of thermobonding resin. According to the invention, the nonwoven is a web, containing no binding agent, of which the g/m2 weight is less than 50, which is produced from fibers in a thermoplastic material, such as polyamide; the mean diameter of the fibers is comprised between 1 and 5 .mu.m, the consolidation of the nonwoven is obtained by intermingling of the fibers by high pressure streams of fluid, notably by injection of water at pressures of 40 to 80 bars, or by thermal bonding. For example, the fibers being obtained from a mixture of constitutents having different melting points, the bonding points result from the melting and bonding of the zones of fibers having the lowest melting point.

Abstract: The present invention relates to ply-twisted yarns comprising fiber blends of about 70 to 90 weight percent base fiber and about 10 to 30 percent non-melt compatible polyolefin fiber having a melting point of about 130.degree. to 170.degree. C. The base fiber may be polyamides, polyesters, or fiber mixtures thereof. The ply-twisted yarns may be heat-set by a conventional process, whereupon the polyolefin fibers melt and bond to each other but do not bond to the base fibers.

Abstract: There is disclosed a multilayered filter material comprising nonwovens made of fibers or filaments of identical or different polymers, said filter material being composed of a depth filter and a fine filter which both have a homogeneous density perpendicular to their surface and have been joined together in such a way that the area covered by the bonding dots does not exceed 75%. The depth filter is from 2 to 20 times thicker than the fine filter, and they have different densities. There is also disclosed a process for manufacturing the filter material.

Abstract: This invention relates to a dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising an image dye dispersed in a binder, and wherein the binder has been coated from an aqueous solution and consists essentially of a hydrophilic polymer which has been set.

Abstract: A mat structure and method of matting is disclosed, wherein a front mat is formed having a first opening. A second mat is formed having an opening smaller than the first opening in the front mat. A well mat is formed having an opening corresponding to the outer dimensions of the second mat and corresponding to the dimensions of a picture to be matted. A backing member is also provided. In a first configuration, the well mat is secured to the backing member. In a second configuration, the well mat is secured to the back of the front mat. In either configuration, a picture is positioned within the opening in the well mat so that, when the second mat is positioned in the well over the picture, the picture is secured in place by the second mat either opposing the backing member (in the first configuration) or opposing the back of the front mat (in the second configuration). The resulting structure comprising the front mat, second mat, well mat, picture, and backing member may then be framed.

Abstract: The invention provides a reinforced film or reinforced metallized film, in which the reinforcing yarns in the fill and/or warp direction are coated with hot melt adhesive and placed in contact with the reinforced film, under heat and pressure, to melt the hot melt adhesive and bond the coated yarns to the film.

Abstract: To form a paved surface, a laminate is used which has on the bottom a geotextile fabric with the mesh structure on the top. The fabric is adhered to the road base by spraying or spreading a bituminous liquid onto the base and laying on the laminate and applying further adhesive to the top of the laminate; asphalt is then placed and rolled. The laminate is formed of a square or rectangular mesh structure which has oriented stands connected at junctions which are thicker than the strands and have low-orientated or unorientated nodules. On one side the surface of the nodules are melted and the fabric is pressed into the nodules so that the plastics material of the nodules envelopes some of the fibers or filaments of the fabric to form a mechanical bond. In this way, the oriented strands stand proud of the fabric, to enable the asphalt aggregate to penetrate into the meshes and interlock with the strands.

Abstract: A multi-layer, nonwoven fabric useful as an absorbent article top sheet, which is formed of a continuous first layer, comprising hydrophobic thermoplastic fibers, bonded to a second layer, comprising a blend of hydrophobic thermoplastic fibers and natural hydrophilic fibers.

Abstract: A unitary absorbent structure is provided with an absorbent pad that includes at least an absorbing layer of absorbent material for absorbing and holding body fluids. A facing layer of body fluid-pervious material is placed the adjacent the absorbing pad. The facing layer and absorbing layer are positioned in face-to-face contact with the contacting faces bonded together over substantially the entire contact area. A fluid-distributing layer may be adhered to one surface of the absorbing layer. A backing sheet may be disposed adjacent the absorbent pad, and edge portions of the backing sheet may be wrapped around the edges of the structure and heat sealed to the facing layer.

Abstract: A hotmelt-adhesive fiber sheet having a superior adhesion and sheet-form retainability is provided, which sheet is composed of substantially unstretched fibers of an average fiber diameter of 10 .mu.m or less composed of an olefinic copolymer or terpolymer composed mainly of propylene, the fiber contact points of the fiber sheet being hotmelt-adhered.

Abstract: The present invention provides a thermal mimeograph paper having a point-bonded structure and including a porous backing material and a thermoplastic resin film layer laminated on one side thereof through an adhesive, wherein the porous backing material and the thermoplastic resin film are bonded together by dotwise point bonding. This point-bonded structure enables the perforability of the mimeograph paper to be improved.

Abstract: A multi-ply, re-sealable label intended for retail use to provide extended text and graphics for consumer information. The label construction includes multiple plies of flexible printed materials using bonding agents and release coatings which allow for numerous openings and pre-closures. The label incorporates a consumer-friendly peel-tab for easy opening and re-closure, materials with a natural "memory" to facilitate re-closure and re-sealability without the use of a tacky adhesive.

Abstract: An absorbent element for absorbent articles comprised of hydrophilic fibers and a discontinuous, non-uniform layer of particles of absorbent hydrogelling material arranged on the upper surface of the element includes a deposition zone on which the absorbent hydrogelling material is distributed with an increased surface density.The zone of increased surface density of the absorbent hydrogelling material can preferably be located in different positions suitable for the different anatomical forms of the users, so as to ensure more effective sealing against the backflow of the liquid and thus ensure an improved feeling of dryness.

Abstract: Honeycomb fabricated of non-crosslinked polymer is prepared by impregnating a fiber web with a linear prepolymer which is soluble in an organic solvent, and which is readily converted by thermal curing in the absence of a crosslinking agent to an insoluble form with a glass transition temperature exceeding 200.degree. C., preferably exceeding 250.degree. C. The preferred prepolymer is the product of diaminodiphenylsulfone and trimellitic anhydride, and forms a poly(amide-imide) upon cure. A process for forming the impregnated honeycomb is also disclosed, which involves impregnating ribbons or sheets, forming them into stacks bonded together at node lines, expanding the stacks into honeycomb structures, and heat soaking the expanded structures to cure the resin and stabilize the structure.