Abstract: Composite sheet material comprises a core (12) formed from cellular material having a respective skin of continuous sheet material on each side thereof. Both the core and the skins are formed of thermoplastic materials and the skins are attached to the core by a thermoplastic adhesive having a fusion temperature less than that of both the core and the skins.

Abstract: The invention relates to a plastic part (10), in particular for an interior lining of an automobile, with a support (16) and at least one layer (14) foamed onto the support (16) and a slush skin (24), wherein the foamed layer (14) comprises at least partially an integrated fabric (22) and the fabric (22) is guided through at least one slit (18) of the support (16) to a side of the support (16) facing away from the foamed layer (14), and to a method for producing the plastic part and the use of the plastic part. The fabric (22) includes a sealing device (12) for sealing the at least one slit (18).

Abstract: The invention provides a foamed body of thermoplastic resin having a high expansion ratio, desired shape and cells of desired diameter, especially fine cells. The foamed body of thermoplastic resin is produced by filling the thermoplastic resin containing a foaming agent into a cavity 31 of a mold 2a and thereafter enlarging the cavity 31 to expand the resin. In this process, the cavity 31 is completely filled with the resin as melted and containing the foaming agent, then held in its shape as filled with the resin and enlarged to an increased final cavity width upon the average temperature filled in the cavity 31 reaching the range from the melting point of the resin to the melting point plus 30° C.

Abstract: Adherent gels and adherent gel composites which can be made by applying an adherent gel onto one or more selected substrates of foam, plastic, fabric, metal, concrete, wood, wire screen, refractory material, glass, synthetic resin, synthetic fibers, and the like. Such adherent gels and gel composites are useful for protecting articles, the body and skin.

Abstract: Biaxially oriented polyester films formed from a crystallizable polyester having increased diethylene glycol content and/or increased polyethylene glycol content, and/or increased isophthalic acid content, preferably polyethylene terephthalate. The films of the invention further include at least one IR-reflective pigment and one UV stabilizer. The inventive films feature adjustable mattness, diffuse scattering power for visible light, high light transmittance and IR reflectance and good thermoformability, and are suitable for thermally protective coatings or thermally protective packaging.

Abstract: The invention relates to a coating for insulation material, which coating comprises a metal layer, such as an aluminum layer, and a plastic layer. The plastic layer contains plastic that crystallises when heated. The plastic can more particularly be a polyamide.

Abstract: Multilayer, biaxially oriented polyester films which include as a constituent of the base layer B, a crystallizable polyester with increased diethylehe glycol content and/or increased polyethylene glycol content, and/or increased isophthalic acid content, preferably polyethylene terephthalate. The outer layers of the inventive films advantageously include at least one IR-reflective pigment and one UV stabilizer. The inventive films advantageously feature adjustable mattness, diffuse scattering power for visible light, high light transmittance, IR reflectance, and good thermoformability, and are suitable for thermally protective coatings or thermally protective packaging.

Abstract: A low stress to seal, unitary gasket tape is provided that is particularly suited for use in form-in-place gaskets. The gasket tape preferably comprises at least two joined porous expanded polytetrafluoroethylene (ePTFE) tapes aligned along tape side surfaces and a substantially air impermeable layer there between. The plane of expansion of the ePTFE is substantially parallel to the flange surface providing longitudinal and transverse strength. The substantially air impermeable layer prevents fluid from permeating through the gasket in the radial direction.

Abstract: A cushioning and positioning pad has a body formed from superposed layers of resiliently compressible foam material and a reinforcing sheet embedded between adjacent layers. The reinforcing sheet is of such stiffness as to resist contraction along its length and width dimensions, but is resiliently bendable in response to the application of a force along its thickness dimension. The reinforcing sheet resists undesirable contraction lengthwise and widthwise of the pad when the latter is encapsulated in a curable coating of material which shrinks as it cures.

Abstract: Description is made of an open cell polystyrene resin foam having a content of organic volatile matters of less than 100 ppm. The open cell foam is suitable as a core material for a sound insulating material or a vacuum heat insulating material. The open cell foam can be produced by melt-kneading a polystyrene resin having a content of organic volatile matters of 100 ppm or higher together with water in an extruder, sucking out the organic volatile matters as an azeotrope with water through a vent, injecting a blowing agent and kneading the injected mixture, and extruding the mixture into a lower pressure area to cause the resin to foam.

Abstract: Biodegradable aliphatic-aromatic films are disclosed. The films comprise filler particles and a copolyester. The films have high vapor permeability and tensile strength and are suitable for use in absorbent and non-absorbent products.

Abstract: Described is an apparatus for the removal of organic substances and/or nitrogen sources from an aqueous medium by exposing the aqueous medium to the action of microorganisms supported on a gas permeable, water impermeable layer, or on and/or in a three dimensional microbial support layer, that is proximate a gas delivery layer through which gas, preferably, oxygen-containing gas, is supplied to the gas permeable layer such that it diffuses through the gas permeable layer and is supplied to the microorganisms.

Abstract: A countertop and method of countertop manufacture wherein the countertop has a horizontal surface and a vertical edge surface wherein the vertical edge surface is comprised of at least one luminescent component. The luminescent component being of a solid surface material with a luminescent quality.

Abstract: Provided are a leather-like sheet fabricated by infiltrating an aqueous resin dispersion (A) into a fibrous substrate, which satisfies a requirement (I) that the aqueous resin dispersion, (A) comprises essentially a main resin (a) stabilized with a surfactant, a polymer (b) having a polyoxyethylene group in its side chains, and a surfactant (c), a requirement (II) that the main resin (a) comprises an urethane resin (a1) and/or an urethane-acrylic composite resin (a2), and the resin skeleton contains from 1 to 10 mmols of a carboxyl group per 100 g of the resin, a requirement (III) that the polymer (b) is obtained through polymerization of a polyoxyethylene group-having ethylenic unsaturated monomer (b1) and any other ethylenic unsaturated monomer (b2) in a ratio by mass (b1)/(b2)=60/40 to 100/0, and a requirement (IV) that the percentage, % by mass (?) of the polyoxyethylene group in the polymer (b) and the number of mols (?) of the amino group per gram of the polymer (b) satisfy 35??+?×20000?60; and an indus

Abstract: A layered sheet construction contains at least one gas permeable, liquid water impermeable layer, and a gas delivery layer formed of a corrugated sheet proximate the gas permeable, water impermeable layer. The corrugated sheet has corrugations that form flow channels through which gas can be conveyed to the gas permeable layer. One embodiment of the layered sheet construction includes a gas permeable, liquid water impermeable layer having a surface energy that is below 20 dynes per centimeter.

Abstract: The present invention discloses a multi-layered stretched resin film which comprises a base layer (A) containing 40 to 90 wt % of a polyolefinic resin and 10 to 60 wt % of an inorganic fine powder or an organic filler; and an amorphous resin-containing layer (B) provided on at least one side of such base layer (A), and containing 0 to 85 wt % of a polyolefinic resin and 15 to 100 wt % of an amorphous resin; where the amorphous resin-containing layer (B) has a porosity of 5% or below. Such multi-layered stretched resin film is successfully exempt from being waved or curled due to vehicle contained in offset printing ink during offset printing, and can thus ensure excellent printability.

Abstract: Disclosed is a method of manufacturing a mechanically and chemically embossed surface covering having selectively textured surfaces. The method includes forming a web coated with a wear layer. The coated web is heated to a temperature at which the wear layer is cured, the foam layer expands, and the pattern is chemically embossed to form a surface covering having foamed regions and nonfoamed regions. The temperature gradient of the surface covering is adjusted such that there is a temperature gradient difference between the foamed and nonfoamed regions. A surface texture is then mechanically embossed into the wear layer and selectively set onto the wear layer substantially overlying the non-foamed regions.

Abstract: A porous or non-porous polymeric substrate having its surface modified with an immobilized fluorocarbon such as perfluorocarbon, polymeric composition is provided. The immobilized fluorocarbon is formed from a monomer having formula: [T—SO2Y—SO2T?]?M+ in which —T and T? are identical or different and comprise an organic radical bearing at least one active polymerization function such as an unsaturation or a ring that can be opened; —M+ comprises an inorganic cation.

Abstract: Multi-layer coated materials and methods of making them are disclosed. In a specific embodiment, a porous polymeric substrate is pre-activated and immersed in a polyelectrolyte solution to form a first layer having an electric charge and at least one functional group. The coated material is next immersed in a second solution of a material having an electric charge opposite of that of the first layer to provide a bi-layer coating. This process can be repeated to form multi-layer coatings on porous substrates.

Abstract: The present invention is directed to a process for producing a polypropylene foam by mixing a high melt strength polypropylene and a blowing agent to form a melt mixture, reducing the temperature of the melt mixture at the exit of the apparatus to an exit temperature that is no more than 30° C. above the melt temperature of the neat polypropylene while maintaining the melt mixture at a pressure sufficient to prevent foaming; passing the mixture through said exit shaping orifice and exposing the mixture to atmospheric pressure, whereby the blowing agent expands causing cell formation resulting in foam formation, and orienting said foam. The foam is useful as tape backings, thermal and acoustical insulation and as a diffuse reflector for use in optical applications such as computer displays.

Abstract: The present invention relates to an imaging member comprising an imaging layer and a base wherein said base comprises a polymer sheet having at least one oriented polymer core and adhered thereto at least one unoriented polymer layer. Another embodiment relates to an imaging element comprising an imaging layer and a base, wherein said base comprises an integral polymer sheet having at least one oriented polymer core and at least one unoriented polymer layer. The invention further relates to a process of manufacturing a base for an imaging element comprising the steps of extruding a voided core polymer sheet; orienting said extruded voided core polymer sheet; and extrusion coating said oriented extruded voided core polymer sheet with at least one unoriented polymer layer.

Abstract: Selectivity embossed surface coverings are prepared by mechanically embossing a wear layer which overlays at least one printing ink containing a photoinitiator which has been printed in a pattern or design. The embossed wear layer is subjected to ultraviolet radiation which causes curing of the wear layer in the surface areas disposed over the printing ink. The product then is fused whereby the mechanical embossing in surface areas which are not disposed over the printing ink relaxes and becomes smooth. In a variant of the invention, a thermoplastic wear layer is employed which can be mechanically embossed in the surface areas which are not disposed over the printing ink with a texture different from the first applied mechanical embossing. In another variant, two different spectral regions of UV curing radiation are used so that a urethane coating can be employed as a top coat with a selectively embossed surface.

Abstract: Selectivity embossed surface coverings are prepared by mechanically embossing a wear layer which overlays at least one printing ink containing a photoinitiator which has been printed in a pattern or design. The embossed wear layer is subjected to ultraviolet light which causes curing of the wear layer in the surface areas disposed over the printing ink. The product then is fused whereby the mechanical embossing in surface areas which are not disposed over the printing ink relaxes and becomes smooth. In a variant of the invention, a thermoplastic wear layer is employed which can be mechanically embossed in the surface areas which are not disposed over the printing ink with a texture different from the first applied mechanical embossing.

Abstract: The invention relates to a multilayer film comprising the following sequence of layers: A) a basis layer of polyolefin foam, B) a layer based on at least one of the polyolefins of the foam layer A), C) optionally a tie layer based on a polyolefin, D) optionally an adhesive layer, E) optionally a gas- and/or flavortight barrier layer, F) an adhesive layer, G) an optionally sealable and/or peelable surface layer, whereby the total thickness of layers A) and B) ranges from 0.5 to 2 mm and the thickness of layer B) ranges from ? to ½ of the thickness of layer A).

Abstract: A resin composition having a high adhesion between a resin layer and a metallic layer as well as an excellent durability, a process for producing the same, and an electrophotographic fixing member are provided. In the resin composition, a metallic layer is provided on a surface of a resin layer having a porous structure at least on the surface.

Abstract: A method for forming a molded panel comprising a rigid substrate, a cover material, and a localized composite pad. The method comprises providing a molding tool having a first mold and a second mold, the first mold having a cavity; inserting a cover material between the first mold and the second mold; placing a composite pad comprising an impregnable layer and a non-impregnable layer in the cavity of the first mold, wherein the non-impregnable layer is facing the second mold and the impregnable layer is abutting the first mold; introducing resin into the molding tool; and solidifying the resin to form the molded panel whereby the non-impregnable layer of the composite pad is located adjacent the cover material.

Abstract: A moldable article that can be custom-fitted to a particular user. Such an article comprises a thermoplastic material such as ethylene vinyl acetate modified by an antistatic agent selected from the group consisting of polyol amines such as ethoxylated amines, ethoxylated fatty alcohols, phosphoric acid esters, quaternary ammonium salts, and amphoteric compounds such as betaine. The article is heated until the thermoplastic material softens, then pressed against a user's body part. The article is allowed to cool, resulting in a custom-fitted article. Such articles may be repeatedly re-heated and re-molded and may include, e.g., moldable footbeds, racquet handles, shin guards, helmets, and seats.

Abstract: The invention relates to a multi-layered biaxially orientated polyolefin film comprising a base layer and at least one protective coating. Said protective coating contains, as the main component, one copolymer or terpolymer I, which seals against PVDC and acrylate lacquers and coatings and consists of an olefin and unsaturated carboxylate acids or the esters thereof, and small quantities of wax. The film is provided on one side with a PVDC or acrylate coating so that it can be used as roll-wrap packaging.

Abstract: A vehicle bumper (20) integrates rigid and flexible components into a single co-injection molded structure. In a preferred embodiment, a flexible fascia (58) is provided with integrated rigid fastener brackets (62, 66, 70, 71), energy absorption structure and head lamp brackets and housings (62). A method for manufacturing such a bumper provides for the injection of two different plastic materials during the same molding process. The flexible plastic material first injected into the mold. Then, the rigid plastic material is injected at gates located where the rigid material is desired. In one embodiment, the rigid material is completely contained within the flexible material. The rigid material may be either a higher stiffness plastic or a fiber reinforced plastic.

Abstract: The present invention relates to a sheet or board like multiple layers laminated polyolefin foam having a plurality of polyolefin layers laminated on at least one side of a polyolefin foam by a coextrusion method. More specifically, the present invention relates to said multiple layers laminated polyolefin foam, wherein the thickness of the outermost layer constituting the plurality of polyolefin layers is 5 to 80 ?m, and the density d (g/L) of the polyolefin foam, the melt flow rate X (g/10 min) of the polyolefin constituting the innermost layer among the plurality of polyolefin layers, and the thickness Y (?m) of the innermost layer of the multiple polyolefin layers satisfy the following relationships (1) to (4). Y?0.

Abstract: A multi-layer sheet of the present invention comprises a thermoplastic resin foam sheet, a reinforcing sheet layered on integrated with at least one side of the thermoplastic resin foam sheet; the reinforcing sheet being formed by a non-woven fabric which comprises non-meltable fibers which are interwound with one another and which are bound together with a thermoplastic resin, the thermoplastic resin foam sheet having an aspect ratio Dz/Dxy of bubbles of 1.2 or more, and an expansion ratio of 5˜50 cc/g, and therefore the sheet is excellent in bending strength, compressive strength, thermo-forming property and dimensional stability as well as lightweight property, and so can ideally be used for an upholstery material for vehicles, a heat-insulation material, a buffer material and the like.

Abstract: A multilayer synthetic wood component comprised of a layer of a first synthetic wood composition that is secured to a layer of a second synthetic wood composition. As a result, the present invention may provide a component that utilizes the beneficial characteristics of each of the compositions. For instance, the component can have an improved combination of appearance, strength, durability, weight, weatherability, and other characteristics. Moreover, the present invention enables the ingredients of each layer to be tailored to the particular application. Consequently, certain ingredients can be conserved, thereby reducing the cost and/or the weight of the component.

Abstract: This invention relates to polymer film useful as a skin layer for synthetic paper or label comprising (A) a filler (B) a carrier polymer and (C) a minor amount of an ink adhesion improving polymer. The film is printable by thermal transfer printing. The invention relates to multilayer articles, which are useful as a synthetic paper or label.

Abstract: An object of the present invention is to provide a foamed polyolefin resin sheet which exhibits a high adhesive strength when laminated with a layer formed of a saponified ethylene-vinyl ester copolymer and which still exhibits a high adhesive strength even when laminated with a layer of a thermoplastic resin having relatively low polarity such as a polyolefin resin. This object is attained by a foamed polyolefin resin sheet including a foamed polyolefin resin layer and a non-foamed surface layer formed of a thermoplastic resin composition having an A1/A2 ratio falling within a range between 1×10?8 and 1×10?1, wherein A1 is a maximum absorbance of the infrared absorption spectrum of the thermoplastic resin composition within an infrared ray wave number region of from 1700 to 1750 cm?1 and A2 is a maximum absorbance of the infrared absorption spectrum of the thermoplastic resin composition within an infrared ray wave number region of from 1455 to 1465 cm?1.

Abstract: An automobile trim has a trim body (a base layer) formed of a rubber composition and having a design surface, a decorating layer formed of a thermoplastic elastomer composition and thermally bonded integrally with the design surface of the trim body. A thermal bonding layer is formed of a thermoplastic resin composition and interposed between the decorating layer and the trim body so that the decorating layer is thermally bonded integrally with the trim body through the thermal bonding layer. The thermal bonding layer has a thickness to an extent not to prevent bending flexibility when the trim is attached to a vehicle body. In another example, a cushion layer is laminated on the trim body and formed of sponge rubber of EPDM, a decorating layer is laminated on the cushion layer and formed by foaming olefin thermoplastic elastomer, and an olefin bonding layer for bonding the cushion layer and the decorating layer.

Abstract: The present invention relates to a high-whiteness, biaxially oriented polyester film with at least a base layer made from polyester. The base layer of the polyester film of the invention also comprises from 2 to 60% by weight of a cycloolefin copolymer (COC), from 0.1 to 25% by weight of a white pigment, and, if desired, from 0 to 5% by weight of an optical brightener, based on the weight of the base layer. The glass transition temperature of the COC here is to be within the range from 70 to 270° C. The film is particularly suitable for packing foods or other consumable items which are sensitive to light and/or to air, or for use in industry, e.g. for producing hot-stamping foils or as a label film, or for image-recording papers, printed sheets, or magnetic recording cards, or for processing on high-speed machinery for winding, metallizing, printing or laminating.

Abstract: A thermoplastic multi-layer composite structure is disclosed and in a first embodiment as a co-extruded acrylic polypropylene outer skin and high melt strength polypropylene substrate which is attracted to a first surface of a polypropylene foam core. An inner polypropylene skin is attached to a second surface of the foamed core, which can either be constructed from an expanded polypropylene or an extruded polypropylene and is attached to the outer and inner skin through the use of an adhesive. Where an extruded polypropylene foam core is provided, the skins can be attached to the foam core by adhesives or through a welding or bonding process in lieu of adhesives. Additionally, the extruded foam core can vary in density to provide a composite foam core. An all acrylic composite multi-layered structure is also provided.

Abstract: A laminate and insulation board containing such laminate and a method of making the board are disclosed. The products are useful for residences and light commercial buildings. Such boards possess high strength, excellent structural integrity, and excellent oxygen and water vapor barrier properties.

Abstract: A rigid closed cell polyisocyanate-based foams is created by reacting at least one organic polyisocyanate with compounds having at least two active hydrogen atoms in the presence of an n-pentane blowing agent. When the foam is formed into a laminated board with facers, the foam formulation includes a sufficient amount of a common blend of cleaning solvent chemicals to cause a noticeable improvement in facer adhesion. The chemicals used to improve facer adhesion are a standard blend of industrial cleaning solvents called “Di-Basic Esters” or DBE. The actual chemical compounds in one mode of this mixture are the methyl esters of about 59% glutaric acid, about 20% succinic acid, and about 21% adipic acid. The minimum rate of addition of the Di-Basic Esters”[DBE] thought to be effective may be less than about 0.5 parts per hundred parts of polyol (pphpp). The currently preferred embodiments use add-on rates within the range of about 0.5 to about 5.

Abstract: Reinforced, laminated, impregnated, and materials with composite properties as cross linked polyvinyl alcohol hydrogel structures in bulk or cellular matrix forms that can take essentially any physical shape, or can have essentially any size, degree of porosity and surface texture. They have a wide range of physical properties, unusual and unique combinations of physical properties and unique responses to stress fields, which allows for their use in many end use applications.

Abstract: A thermoplastic multi-layer composite structure is disclosed and consist in a first embodiment of a co-extruded acrylic polypropylene outer skin and high melt strength polypropylene Substrate which is attached to a first surface of a polypropylene foam core. An inner polypropylene skin can be provided and is attached to a second surface of the foam core. The foam core can either be constructed from an expanded polypropylene or an extruded polypropylene. Where an expanded polypropylene foam core is provided, the foam core is attached to the outer and inner skin through the use of a polypropylene adhesive. Where the extruded polypropylene foam core is provided, the skins can be attached to the foam core through a welding or bonding process in lieu of adhesives. The polypropylene adhesives can also be utilized for attaching the skins to the extruded foam core. Additionally, the extruded foam core can vary in density to provide a composite foam core.

Abstract: Composite fence and decking components, for example, rails, posts and planks, are provided which generally include a weatherable outer layer, a core layer made of a thermoplastic polymeric composition and a wood component in an amount effective as a filler, and an inner layer made of a thermoplastic material. The layers are configured so as to form a generally central hollow space. The components are light weight and inexpensive to manufacture. The components can be manufactured by using a single coextrusion process to produce a cylindrical form. The cylindrical form is passed through a reshaping die to form a composite having a desired cross sectional form, for example, a composite with a substantially square or rectangular cross section.

Abstract: A foam layer can be formed at a temperature at which the surface quality of a surface layer is not deteriorated, and a molding technique that is excellent in adhesiveness of a foam layer and a surface layer or/and a base member is developed. For the purpose of obtaining a resin molding composite, the present invention is characterized by a polyolefin resin molding composite comprising a surface layer and a foam layer, or a surface layer, a foam layer, and a base member, wherein the foam layer comprises a foam layer produced by fusion bonding thermoplastic expanded resin particles one another by molding, where the thermoplastic expanded resin particles comprises a core that is made of a crystalline thermoplastic resin and is in an expanded state and a polyethylene resin coat covering the core, and the surface layer comprises a thermoplastic synthetic resin having a melting point of 5° C. or more higher than a melting point of polyethylene resin constituting the coat of the particles.

Abstract: A multilayer polyolefin foamed sheet comprises a foamed layer and a non-foamed layer. The foamed layer is composed of polyolefin and the non-foamed layer is composed of one of the polyolefins, a polypropylene with a long-chain branch and a polyolefin-based adhesive resin with a long-chain branch. In another aspect, a multilayer polyolefin foamed sheet comprises a foamed sheet having at least one polyolefin foamed layer and a gas barrier resin sheet having at least one barrier resin layer laminated thereon, wherein the gas barrier resin sheet has a thickness of from 10 to 300 &mgr;m and has a thickness distribution, Tmax/Tmin, of from 1 to 1.2 in an area of at least 25 cm2.

Abstract: A resin composition comprising 3 to 80 parts by weight of a resol type phenolic resin or 3 to 150 parts by weight of a polyhydric phenol, based on 100 parts by weight of a copolymer (Å) of an epoxy group-containing monomer and an &agr;-olefin, a powder of the resin composition, a laminate having a layer containing the resin composition, and producing method of the laminate.

Abstract: The present invention provides a vibration dampening laminate that is lightweight and has superior sound insulation and vibration dampening properties. The vibration dampening laminate comprises a constraining layer, a viscoelastic adhesive layer, a foam spacing layer and a pressure sensitive adhesive layer including a release layer. The pressure sensitive adhesive layer and release layer are contoured to fit a profile of the article being soundproofed and vibration dampened.

Abstract: A thermoplastic elastomer composition for powder molding comprising 100 parts by weight of a polyolefin-based resin(A) and 10 to 1000 parts by weight of a specific hydrogenated vinyl aromatic compound-conjugated diene-based block copolymer(B), a powder of the thermoplastic elastomer composition, a method for powder molding the same, a molded article obtained by the method for powder molding, and a multi-layer molded article containing the molded article as one layer.

Abstract: A door weather strip having an extruded member and a molded corner for connecting ends of the extruded member. The extruded member is composed of a foamed thermoplastic olefin elastomer which has an average cell diameter of 30 to 70 &mgr;m and an expansion ratio of 150 to 250%.

Abstract: A method and apparatus for making a densified skin polymer foam plank comprising providing a polymer foam having a plurality of cells and heating an outer surface of the foam at a heating station. The heating step collapses and melts the cells adjacent the outer surface to form the densified skin having a density greater than a density of the foam before the heating step. Additionally, the method and apparatus may further include extruding the polymer foam from an extruder.

Abstract: A thermoformable, multilayer, co-extruded sheet comprising at least two separate foam polypropylene layers obtained by chemical foaming of two polyproplene resins having different flexural modulus, a “high modulus” polypropylene and a “low modulus” polypropylene. The presence of two different foam layers of polypropylene of different modulus allows obtaining a thermoformable sheet with the desired balance between thermoformability and stiffness.