Abstract: A floor protector protects floors against damage from heavy objects supported on or sliding across the floor and reduces the effort required to move the objects. The protector includes an elongate web with raised lips along its opposite edges and interlocking formations on its opposite ends. The interlocking formations allow the connection of plural strips end-to-end.

Abstract: The invention relates to a wood surface layer for a parquet and a method for manufacturing the same. A piece of fresh wood is cut in the cross-grain direction into slices or blocks which are carried through a microwave oven. Immediately downstream of the oven, as the slices or blocks are cooling, the surface thereof is coated with a water-soluble polyalcohol which impregnates in wood as a result of the action of a vacuum developing within the wood. The polyalcohol replaces some of the cell-wall water of wood and thus prevents the formation of seasoning cracks and the moisture induced movements in wood.

Abstract: Improved insulating modular panels are manufactured to incorporate into each insulating modular panel at least one vacuum insulation panel. Vacuum insulation panels are conveyed seriatim toward a pultrusion die which ultimately produces the insulating modular panels as a continuous block. Joint spacings or gaps between adjacent vacuum insulation panels and sides of the vacuum panels are filled with foam or preformed filler material to form a substantially continuous inner core which has substantially continuous side edges. Reinforcement material is applied to the inner core. The reinforcement material can be impregnated with resin prior to its application to the inner core or resin may be injected into the pultrusion die. In either event, a continuous elongated block of insulating modular panels emerges from the pultrusion die. The continuous elongated block is severed at joint spacings or gaps between adjacent vacuum insulation panels to form insulating modular panels of desired sizes from the block.

Abstract: A method of making a veneered door with a raised central panel that is elongated and vertically oriented in which only three pieces need to be assembled. A suitable wood or wood-like stock is machined to form first and second elongated, generally rectangular substrates and then a flexible veneer with a simulated or real wood grain is affixed to each of these substrates. In the finished door, the grain of the veneer applied to the first substrate and to the second substrate runs, respectively, generally parallel to and generally perpendicularly to the longitudinal axis of the central panel. At least one single, unitary piece defining the central panel and two vertically-oriented framing members is fabricated from the veneered first substrate.

Abstract: A high strength polyester strap, preferably polyethylene terephthalate, suitable for higher load applications that typically require steel strapping. The strap is made by a process in which an extruded strand or sheet of polyester is subjected to a plurality of stretching steps with a final stretch ratio of at least 5 to 1. Raising the temperature of the strap in at least one of the stretching steps is preferred. In a preferred embodiment, the strap is surface treated to reduce the brittleness of the strap and to improve weldability. The profile of the strap is flattened as part of the surface treatment which treatment enhances the weldability of the strap.

Abstract: Disclosed is a new masking tape with tool guide for facilitating application of joint compound to wall joints and edges formed by drywall panels used to construct interior building walls. The masking tape with tool guide comprises an elongated strip of flexible tape having pressure-sensitive adhesive disposed on one side thereof whereby the paper strip may be adhered to a drywall panel adjacent a joint to be finished with joint compound. The tape is divided centrally longitudinally into a first half and a second half with release paper covering the pressure-sensitive adhesive of the first half and a straightedge member fixedly adhered to the second half of the paper strip by the pressure-sensitive adhesive. The straightedge member comprises an elongated strip of flexible solvent-resistant plastic having an integral longitudinal lip formed along one edge thereof.

Abstract: Disclosed is a method and apparatus for forming diagonal splices in flexible, fusible material and the material spliced accordingly. The splice is formed by overlapping the material, tensioning the material at the area to be spliced, and heating a strip of the material under tension to its fusion temperature, thereby fusing and separating the material at the strip. The splice is nearly undetectable to the untrained eye.

Abstract: A papermakers fabric comprises a felt made up of a base cloth and a batt of fibres needled to the base cloth. The papermakers fabric is woven from machine direction yarns and cross machine direction yarns. The machine direction yarns form a series of loops at each of the fabric ends, the two sets of loops being interdigitable and capable of union by a pintle wire. The machine direction yarns comprise a core of cabled monofilaments surrounded by a sheath of multifilaments.

Abstract: A method of joining adjacent, non-coplanar, fiber reinforced composite structures includes machining a plurality of serrations (4) into an edge (6) of a consolidated first fiber reinforced composite structure (2) such that reinforcing fibers continue from a main body (14) of the first fiber reinforced composite structure (2) into the serrations (4). One or more reinforcing fiber plies (16) are then laid up around the serrations (4) to form an unconsolidated second structure such that the serrations (4) protrude through at least one reinforcing fiber ply (16). In addition to the one or more reinforcing fiber plies (16), the unconsolidated second structure also includes a matrix precursor. Sufficient heat and pressure are applied to the unconsolidated second structure and the serrations (4) to consolidate the second structure into a fiber reinforced composite structure (8).

Abstract: A supply feedstock intended for use in a workpiece finishing machine wherein individual workpieces are successively separated and presented in a predetermined fashion to an automated loading means. The feedstock includes a plurality of individual workpieces arranged in side-by-side order in the form of a continuous belt, or bandolier, of workpieces, each of the workpieces being interconnected at head and tail portions of the workpieces by integral webs, successive workpieces being trimmed from the bandolier and presented to a loading means, while the separated webs are discharged to waste.

Abstract: A conductive woven material (2) being conductive, and preferably equally conductive, in all directions is made using woven fabric (4) having conductive weft fibers (10). The material is produced by cutting the woven fabric at a first, acute angle (19) to the side edges (12, 14) to produce trapezoidally-shaped cut fabric pieces (18). The cut fabric pieces are then reoriented so that the former side edges of the fabric are placed to abut one another to create a reconstructed fabric (20) in which the weft fibers are at acute angle (22) to the length of the reconstructed fabric. Two layers of reconstructed fabric (24, 26) are placed one upon the other, with one upside down, so that the conductive weft fibers are at an angle, preferably 90.degree., to one another so to create the conductive woven material. The conductive woven material can be used to form, for example, conductive laminates or conductive honeycomb material.

Abstract: A fabric for strengthening flat-shaped articles consisting of warp threads and woof threads which form a basic fabric having a connected edge area which is thinned relative to the basic fabric.

Abstract: The invention concerns a timber element and a procedure for manufacturing such a timber element. The timber element (14b) is composed of at least two heavy wooden blanks (2) fitted one upon the other and glued to each other by their substantially horizontal faces. As taught by the invention, each wooden blank (2) is provided on at least on horizontal face with a guiding recess (6; 6a, 6b) longitudinal to the wooden blank and vertical, for guiding the crackling to occur vertically.

Abstract: A seam construction for joining the ends of an industrial fabric. The fabric having machine direction and cross machine direction yarns interwoven in an uneven shed pattern that defines a single layer fabric body. The machine direction yarns at each end define a series of loops that secure a respective coil seam member to each end of the fabric. The machine direction yarns of the fabric are woven in a repeated pattern having "n" yarns, wherein "n" is an uneven number and "(n-1).div.2" machine direction yarns are woven back into the body of the fabric in a shed pattern defined by another machine direction yarn and the "n.sup.th " yarn is woven back into the body of the fabric in its identical shed pattern.

Abstract: A floor mat including a plurality of rigid, elongated rails interconnected by flexible coupling members is provided. Each of the rails include a base portion supporting a tread surface and a pair of parallel side members connected to the sides of the base portion. Each of the side members defines a passageway. The coupling members are flexible, resilient, and each including a web with longitudinal side margins. Each web has connected to each side margin an arrangement for engaging the passageway of a side member. When the floor mat is disposed on a flat, horizontal floor, the web is at bottommost position in the floor mat.

Abstract: The invention relates to a method of manufacturing sheet elements of end-wood type for use as wear surfaces for floors, tables or the like. According to the invention a longitudinally sawn piece of wood (10) is sawn up with cuts oblique to the longitudinal direction into plates of larger area than the cross-sectional area of the piece of wood. Thereafter the plates (12) are laid next to each other and joined together by complementarily shaped edge surfaces to form a sheet end-wood element. The invention also relates to a sheet element made in accordance with the above described method.

Abstract: A space filling unit for use in a container for cargo shipment to prohibit shifting of the cargo is formed by flat first and second panels, with first and second slots formed in each so that, when assembled, an x-shaped structure is formed. When placed in the container, respective end edges of the panels are supported on the bed of the cargo container while the other of the panel's end edges engage the container's sidewalls. The panel side edges form a pair of x-shaped bases which serve to support the cargo against movement toward the end wall of the container. An anti-slip element may be included on the respective end edges, braces may engage the panels proximate respective end edges, and panel wear on the cargo. An auxiliary bearing penal may also be used adjacent at least one of the x-shaped bases. A plurality of x-shaped structures may be utilized in the present invention, with a corresponding plurality of bearing panels interposed between the x-shaped structures.

Abstract: A corner structure of a resinous molded part includes a base portion and a pair of lever portions which are formed integrally with the base portion. The molded part is provided with cut-outs which are arranged at corners where the base portion intersects the lever portions. A thickness of a portion outside the recess is established to be larger than a thickness of another portion inside the cut-out. With the establishment of the thickness, the amount of the inward inclination of the lever portions derived from the differential shrinkage can be reduced since they are pulled outwardly due to the increased thickness of the outside portion, when the part is cooled.

Abstract: An extrusion interlock assembly provides for the joining of two or more extruded pieces at an interlocking joint that may be slideably mated to produce an easily assembled and disassembled assembly. On one side, the interlocking joint has a first channel mechanically connected to the first side, and a first flange adjacent to the first channel also mechanically connected to the first side. On the other side, the interlocking joint similarly has a second channel and a second flange, both mechanically connected to the second side. The second channel slidably receives the first flange, and the second flange slidably receives the first channel. A fastener laterally displaces the first flange away from the second flange, and the first channel away from the second channel, causing the first flange to frictionally engage the second channel, and the second flange to frictionally engage the first channel.

Abstract: A shaped particle for use as a loose fill material to surround and cushion an article packaged within a container includes a strip of stiff yet flexible material having a several convoluted regions for absorbing impact energy. The convoluted regions are adapted to compress together to absorb mechanical energy in response to a mechanical force such as would be encountered during an impact and act as resilient springs or bumpers to protect the article. The shaped particle has characteristics that prevents nesting and facilitates interlocking to prevent migration. The invention also provides a method for making embodiments of shaped particles according to the invention.

Abstract: A composite weatherboard having a timber member and a metal exterior sheath. The sheath is extruded with longitudinal projections which are fitted and pressed into permanent engagement with corresponding grooves or tongues provided in the timber member thereby obviating the need to use an adhesive or other fastener.

Abstract: A large ceramic substrate article for electronic applications including at least one layer of sintered ceramic material, the layer including a plurality of greensheet segments of ceramic material joined edge to edge. Also disclosed is a method of fabricating a large ceramic greensheet article as well as a large ceramic substrate article.

Abstract: A luminescent automobile trim apparatus includes structure for positioning on a portion of an automobile to render the portion visible at night an electroluminescent strip formed of several layers of material joined together substantially face to face, including a layer of conductive film, under a first layer of phosphor of a certain first color, under a first layer of electrode material, for radiating light of a certain color. The apparatus preferably additionally includes a structure for altering electrical frequency and voltage applied to the first layer of electrode material for changing the color of the radiated light. The structure for altering preferably includes a musical sound system; where the frequency and voltage are controlled by electrical representations of music within the sound system, such that color changes are synchronized with changes in the electrical representations.

Abstract: A cut-resistant tarpaulin has a waterproof coating bonded to a cut-resistant woven fabric. The fabric has a leno or gauze weave. The fabric has warp yarns and weft yarns of braided fibers. The fibers have an initial modulus greater than 400 grams per denier.

Abstract: The invention provides an ornamental film comprising a laminate structure consisting of two biaxially oriented films and a thermally fusible polyolefin layer interposed between the films, characterized in that the biaxially oriented film has a decorative layer either on a face side or on a reverse side, that the thermally fusible polyolefin layer has a thickness corresponding to 25.about.70% of the total thickness of the laminate structure, and that the bond strength between the biaxially oriented film and thermally fusible polyolefin layer has been controlled at 20.about.170 g/15 mm. This ornamental film is advantageous in that when formed with slits or cutouts and expanded three-dimensionally, it is protected against tear propagation, that it lends itself well to vapor deposition, that it can be incinerated for disposal, and that it is comparatively inexpensive.

Abstract: A space filling device for use in a container for cargo shipment to prohibit shifting of the cargo is formed by flat first and second panels, with first and second slots formed in each so that, when assembled, an x-shaped structure is formed. When placed in the container, respective end edges of the panels are supported on the bed of the cargo container while the other of the panels' end edges engage the container's sidewalls. The panel side edges form a pair of x-shaped bases which serve to support the cargo against movement toward the end wall of the container. An anti-slip element may be included on the respective end edges, braces may engage the panels proximate respective end edges, and panel side edge guards may be included to prevent undue wear on the cargo. An auxiliary bearing penal may also be used adjacent at least one of the x-shaped bases.

Abstract: Wood composite materials containing veneer layers interposed with a thermoplastic adhesive containing a polyester such as polyethylene terephthalate and other thermoplastic polymer show increased impact resistance. The composite material may be manufactured using an adhesive transfer method or film extrusion.

Abstract: A method of splicing a belt in a round baler having a bale forming chamber defined by at least one elongated belt having opposing ends spliced together to form a continuous band. The splice includes a first and a second series of similar side-by-side loops connected to and extending from the respective opposing ends of the belt, and an attaching element extending through both series of loops to maintain the opposing ends of the belt in alignment and close proximity to each other. Retention components affixed to the attaching element retain it in operative relationship to the loops and are disposed outwardly of the outer loops.

Abstract: A reinforced composite backing tape for securing adjoining straight edges of textile sheets, and particularly, but not exclusive, for interconnecting abutting edges of carpet pieces. The backing tape comprises an elongated reinforced backing sheet having opposed elongated parallel edges. A plurality of spaced apart, transversely disposed, rigid stabilizing bars are immovably retained over a top surface of the backing sheet. The bars are formed from a material capable of providing resistance to bending forces to provide resistance against the tape folding along an elongated seam defined along the abutting edges of the carpet pieces connected thereto to prevent carpet peaking along the abutting edges. A thermo-meltable adhesive material is disposed over the top surface of the tape and the bars to adhesively secure the tape to edge surface portions of backing material of the carpet pieces.

Abstract: A plurality of plastic panels or planks (12) are connected to each other in side by side relation by interfitting male and female connectors (28, 30) to form a planar structure such as a cover (10). The male connector (28) has opposed outer planar surfaces (32, 34) in contact relation to opposed inner planar surfaces (46, 48) on a female connector (30) to minimize any relative pivoting or articulating movement between adjacent panels (12). Adjacent panel sections (15A, 17B) are hinged to each other about hinges (35E) to permit the panel sections (15A, 17B) to be folded against each other for stacking. Alternatively panels 14C, 14D may be linked together for stacking. A side support (16) is secured to the sides of the cover (10) to cover and to support a side of a panel where such side is not connected to another panel.

Abstract: A process for the manufacture of a thermal transfer donor element having at least two areas of thermally transferable colorant, at least one of said areas being a thermal dye transfer composition and at least one of said areas being a thermal mass transfer composition, which process comprises coating a first thermal dye or mass transferable layer containing a colorant onto a temporary substrate to form a primary thermal transfer element, said layer having a measurable surface area, and either 1) thermally transferring less than all of said layer onto a second temporary substrate having a non-imagewise distributed area of a second thermally respectively mass or dye transferable colorant thereon to form a thermal transfer donor element with at least two areas of different thermally transferable materials, or 2) splicing a portion of only one primary thermal dye or mass transfer element onto another thermal transfer element having at least a non-imagewise distributed second thermal mass or dye, transferable, res

Abstract: A shark repellant patch is provided which includes a highly flexible, impermeable membrane sealing a shark repelling substance to a highly flexible base. The membrane is provided with imperfections that cause the membrane to shear when it is subjected to a predetermined level of force. In one embodiment of the invention, a tab is provided proximate the imperfections to facilitate rupturing the membrane. An adhesive is applied to a portion of the base. An exemplary method of fabrication is also provided.

Abstract: Joints for industrial fabrics are made such that the end edge of each part of the fabric is formed with projecting loops (5), which are formed by bending the warp threads of each part backwards, the return parts of these threads being woven into the fabric for a given length. The loops of one part are inserted between the loops in the opposite part for being fixed in this position. It is desirable that all warp threads in the fabric can coact in the joint, even if their collective width is greater than 100% of the fabric width. The individual loops (5) along at least some portion of the end edges (3, 4) of the parts (1, 2) are therefore formed from at least two juxtaposed threads (7, 8; 11, 12) crossing each other at least once (at 9) before the point of return into the fabric.

Abstract: A press fabric for use on papermaking and similar machines is of the open-ended variety, and has loops at each end enabling it to be closed into endless form during installation on the machine by means of a pin seam. The machine-direction (MD) yarns, from which the loops are formed during the flat or endless weaving of the fabric, are composite yarns having a core yarn with a sleeve-like coating. The coating, either permanent, semi-permanent, or soluble, gives the composite yarn a monofilament-like structure enabling good loop formation and stability. The use of multifilament yarn as the core yarn provides a fabric having improved elasticity in the machine direction, and a greater degree of resiliency, following the removal of a soluble coating material, than can be obtained using monofilament yarn.

Abstract: This invention relates to a spliced fluoropolymer coated mesh fabric comprising a fluoropolymer coated mesh fabric having two ends that are overlapped so as to align the mesh voids, and a fluoropolymer cord interwoven through at least one row of the aligned voids of the overlapped ends.

Abstract: A self-adhering heat seamable sheet material for roofing prepared from an uncured polymeric composition of matter which comprises 100 parts by weight of a polymer blend comprising from about 10 to 95 parts by weight of an polymer selected from the group consisting of semi-crystalline polymers having more than about 2 percent be weight crystallinity and polyolefins having up to about 2 percent by weight crystallinity, which polyolefins are prepared from monomers having at least 2 carbon atoms, and mixtures thereof; and from about 5 to 90 parts by weight of a crystallinity enhancing polymer and mixtures thereof; from about 20 to 300 parts by weight of a filler selected from the group consisting of reinforcing and non-reinforcing materials and mixtures thereof per 100 parts of the polymer blend; and from about 20 to 150 parts by weight of a processing material and mixtures thereof, per 100 parts of the polymer blend.

Abstract: An improved substrate splice for roofing and the associated method for the creation of an improved substrate splice. This can be achieved by taking a fiberglass scrim that has at least one layer of nonwoven fabric positioned adjacent thereto. Splicing involves overlapping this material and heating to a temperature of between 450.degree. and 1,000.degree. F. while applying 1 to 1,000 pounds per square inch. The preferred range of temperature is between 500.degree. to 700.degree. F. with 1 to 4 p.s.i. of pressure. Two layers of fiberglass backed thermoplastic tape is applied to each side of this splice. The tape is then heated to between 450.degree. and 1000.degree. F. while also applying pressure of 0 to 1,000 pounds per square inch. The preferred range of temperature is between 500.degree. to 700.degree. F. with 1 to 4 p.s.i. of pressure.

Abstract: An endless papermakers belt which is formed from a length of woven fabrics having its ends joined together to form the endless belt. The fabric has joining loops at each end of the fabric which are formed entirely from and are a linear continuation of the original woven fabric.

Abstract: The plate-shaped component (1) has a sealing (2) surrounding its side faces (2a) and is easily exchangeable. The surrounding sealing (2) is an integral part of component (1) and has varying thicknesses along its length. This allows compensating for dimensional variations of the plate-shaped component (1) by suitable production processes, such as casting or spraying, and keeping the fixed external dimensions of the component (1) surrounded by sealing (2). An overhanging area (3), positioned on component (1) and surrounded by sealing material, serves as a stop and permits component (1) to be flush-mounted in a housing (7) from the inside. A wedge-shaped elevation (4) of sealing material, which acts as a pinch or fold and is positioned in the overhanging area (3), improves the flush mounting still further. For outdoor installation, the plate-shaped component (1) may be additionally provided with heating as well as temperature measuring means (5, 8).

Abstract: Martial arts focus training apparatus comprises a backboard on which boards to be struck and broken by a practitioner are supported on and spaced from the backboard. The backboard may be grasped by holders assisting the practitioner via slots. An extender permits additional boards to be held on the apparatus. Handle extension means allows the backboard to be held to the side while positioned against a wall. A wall mount for the apparatus permits rotary, pivotal and vertical positioning of same.

Abstract: A cylindrical filter is formed from a sheet of filter material which includes two connected layers of filter media. Opposed edges of the sheet are joined to form the cylinder by separating the media adjacent the edges and then sealing together the first of the separated layers followed by sealing the second of the separated layers. The two seals are spaced inwardly of the edges and are spaced from one another. In this way, failure of one seal does not result in failure of the cylindrical filter.

Abstract: A structural member formed from a plurality of layers of interwoven fibrous material. The plurality of layers intersect and join each other along lines of contact. The lines of contact form axes of the member. A hollow central portion having a perimeter is defined by the plurality of intersecting layers and the lines of contact. A plurality of points are formed on the perimeter of the hollow central portion defined by the lines of contact formed by the axes. At least one flange extends outwardly of the hollow central portion at each of the points, wherein each of the plurality of layers extends beyond the axes of the member to define the flanges.

Abstract: A thrust vectoring panel which is a hybrid ceramic/ceramic composite consisting of three layers of lightweight materials, the anisotropic properties of which are manipulated such that the properties of the materials, i.e., the coefficient of thermal expansion, the strain energy release rate, and the tensile and flexure modules, either match or gradually transition from material to material. The three layers include a face layer which is of a high temperature capable material that can withstand temperatures within a range of 2300.degree.-25000.degree. F. for an extended period of time and a temperature as high as 28000.degree. F. for a short period of time. The middle layer simply is an insulating layer for providing adequate thermal insulation for the activator mechanism for the thrust panel. The third layer is a skeletal structure or layer which is of a lightweight material having sufficient strength to support all the integral interfaces, such as the activator mounts and the like.

Abstract: A mat of a liquid-tight, flexible material is provided for the collection of fluid used to treat objects pulled onto the mat. In particular, the mat is used for the collection of deicing fluid during deicing of an aircraft. The mat comprises at least one discharge opening. The mat includes wires for stiffening the mat in the direction of travel on it. The mat may advantageously be formed with grooves for directing the treatment fluid to at least one discharge opening. For use in connection with large mats composed of mutually parallel webs there is provided a fixture for mutual fastening of the webs and sealing of the joint between the webs.

Abstract: An all-composite article comprising two composite parts pivotally joined by a composite hinge which is fabricated integrally therewith. The method of making such an all-composite article.

Abstract: Sandwich elements in the form of slabs, shells and the like, consisting of facings and a rigid polyurethane foam core can be joined together in an airtight and watertight manner when they are provided with edge profiles which are cast from casting materials forming flexible polyurethane foam and which have a groove and a tongue.

Abstract: A two ply laminated structural material is made from used vehicle tires, such as steel belted radial automobile tires. Each ply consists of a plurality of individual tread bearing tire belts joined end to end. The individual belts are made from tires by removing the tire sidewalls and transversely cutting the annular remainder. The individual belts are joined so as to provide a continuous structural belt capable of carrying a load in tension. By bonding two such belts together thread to thread using adhesive or vulcanization, a structural material is obtained having sufficient stiffness and strength to be used in the manufacture of a variety of rubber products.

Abstract: A water-soluble double-faced adhesive tape is provided which needs no release paper, permits web splicing without an increase in thickness at the spliced part, and permits spliced webs to run smoothly in a papermaking process, eliminating the possibility of web breaking. The tape includes a water-disintegratable substrate, a first water-soluble adhesive layer formed on one side of the substrate from one edge of the substrate, and a second water-soluble adhesive layer formed on the other side of the substrate from the other edge of the substrate, the two adhesive layers being positioned a distance apart greater than the web thickness plus twice the tape thickness plus an allowance such that they do not overlap in the width direction, with release layers preventing the adhesive layer from sticking to the substrate when the tape is wound up into a roll.

Abstract: A puzzle towel/mat for bath, beach and kitchen is provided which consists of a plurality of irregularly shaped pieces having interlocking sides to match up with each other, so as to form one complete unit when fitted together. A mechanism is for retaining the interlocking sides of the plurality of irregularly shaped pieces together when matched up with each other, so as to keep the one complete unit together to be utilized.

Abstract: A laminate formed by heat fusing a heat sealable polyolefin sheet to two cured polyolefin sheets to produce a water impermeable seal between the cured polyolefin sheets. The heat sealable polyolefin sheet is preferably bonded to a porous heat resistant backing on one surface and the other surface is heat fused to the cured polyolefin sheets. The cured polyolefin sheets may typically be in juxtaposed or overlapping arrangement. The porous backing may be in the form of a fibrous sheet. The heat sealable polyolefin sheet is preferably low density polyethylene and the cured polyolefin sheets are typically cured EPDM rubber.