Abstract: The present disclosure relates to a method for teaching a laminating method as well as operating a laminating device, the both being for laminating a film element on a substrate part, in which designated path routes, in particular designated path curves, along which grippers for gripping the film element are subsequently moved to laminate the film element, are determined and taught by way of CAD data of the substrate part as well as the film element.

Abstract: The present invention relates to a method for producing a fiber-reinforced component, comprising the step of providing a fiber material (2) impregnated with resin, having rovings (4) extending alongside one another at least in one direction. The object of the present invention is to provide a method, with which irregularities in the fiber material impregnated with resin can be reduced or even eliminated. The method is characterized by a step of stretching the fiber material (2), so that the rovings (4) align in their longitudinal direction. Furthermore, the invention relates to a device for carrying out the method according to the invention and to a fiber-reinforced component.

Abstract: There is provided a resin-impregnated decorative paper (2) formed by impregnating a decorative paper (4) with an impregnating resin (5). The decorative paper (4) includes: a base paper (6); a picture pattern layer (7) provided on a surface (6a) side of the base paper (6); a filling layer (8) provided on a surface (7a) of the picture pattern layer (7); and a foamed resin layer (9) provided on a surface (8a) of the filling layer (8). The filling layer (8) contains at least one of an epoxy-based resin, an acrylic-based resin, a urethane-based resin, and a casein-based resin.

Abstract: The present disclosure relates to methods for making elastomeric laminates that may be used as components of absorbent articles. In particular, discrete mechanical bonds are applied to a first substrate and a second substrate to secure elastic strands therebetween, wherein the discrete bonds are arranged intermittently along the machine direction. During the bonding process, heat and pressure are applied to the first substrate and the second substrate such that malleable materials of the first and second substrates deform to completely surround an outer perimeter of a discrete length of the stretched elastic strand. After removing the heat and pressure from the first and second substrates, the malleable materials harden to define a bond conforming with a cross sectional shape defined by the outer perimeter of the stretched elastic strand.

Abstract: The present disclosure relates to methods for making elastomeric laminates that may be used as components of absorbent articles. The elastomeric laminates may include a first substrate, a second substrate, and an elastic material located between the first and second substrates. During assembly of an elastomeric laminate, a beam is rotated to unwind the elastic strands from the beam, wherein the strands may include a spin finish. First bonds are applied to bond discrete lengths of the stretched elastic strands with and between the first substrate and the second substrate, wherein the discrete first bonds are arranged intermittently along the machine direction. In addition, second bonds are applied between consecutive first bonds to bond the first and second substrates directly to each other, wherein the second bonds extend in the machine direction and may be separated from each other in a cross direction by at least one elastic strand.

Abstract: The present invention aims to provide a flexible resin foam having excellent shapeability and a resin foam sheet, an adhesive tape, a member for a vehicle, and a member for a building each including the resin foam. Provided is a resin foam having a multitude of cells, the resin foam including: a polyvinyl acetal; and a plasticizer, the resin foam having an elongation strain of 300% or more and a 50% compression stress of 70 kPa or less.

Abstract: A bonder includes a first chuck unit 1A, a second chuck unit 1B, a first base 21A, a second base 21B, and a first floating mechanism 3A. The first chuck unit 1A and the second chuck unit 1B are chuck units in a pair including respective suction surfaces for suction of bonding targets and are arranged while respective suction surfaces 11a and 11b face each other. The first base 21A and the second base 21B support the first chuck unit 1A and the second chuck unit 1B respectively. The first floating mechanism 3A applies gas pressure to a back surface 12a of the first chuck unit 1A to float the first chuck unit 1A from the first base 21A, thereby moving the suction surface 11a of the first chuck unit 1A toward the suction surface 11b of the second chuck unit 1B.

Abstract: A method for manufacturing a core-material-containing garment, the method includes: a feeding step of feeding fabric (2) in a wound state onto a conveyor table (1) without relaxing or substantially relaxing the fabric (2); a core material application step of applying a reactive hot-melt adhesive to the fabric (2) on the conveyor table (1) to form a core material (12); an adhesive application step of applying a bonding hot-melt adhesive (13) configured to bond the fabric (2); and a drying step of drying the applied bonding hot-melt adhesive (13), and in the core material application step, the reactive hot-melt adhesive is mixed with nitrogen gas and foamed, and the reactive hot-melt adhesive is applied using an application device provided with a resin discharge unit that is movable in at least two axial directions of vertical and horizontal directions.

Abstract: A container that includes a microwave interactive web at least partially overlying and joined to a three-dimensional support, wherein the three-dimensional support may be formed prior to having the microwave interactive web mounted thereto. The three-dimensional support may be a preformed container that is sufficiently rigid and dimensionally stable for use in containing food.

Abstract: A prepreg for the manufacture of a fibre-reinforced composite material having fire retardant properties, the prepreg comprising from 42 to 52 wt % of an epoxide resin matrix system and from 48 to 58 wt % fibrous reinforcement, each wt % being based on the total weight of the prepreg, the fibrous reinforcement being at least partially impregnated by the epoxide resin matrix system; wherein the epoxide resin matrix system includes as components: a. a mixture of (i) at least one epoxide-containing resin and (ii) at least one catalyst for curing the at least one epoxide-containing resin; and b. a plurality of solid fillers for providing fire retardant properties to the fibre-reinforced composite material formed after catalytic curing of the at least one epoxide-containing resin, wherein the weight ratio of component a. to component b. is from 1.4:1 to 1.86:1.

Abstract: The present disclosure relates to absorbent articles and methods for assembling absorbent articles with substrates and/or components that include graphics with zones of relatively high print densities and zones of relatively low print densities. In turn, the zones of relatively low print densities may be positioned in regions that are subject to various manufacturing transformations during the assembly process. As such, the graphics may be positioned and/or printed in such a manner so as to reduce noticeable visible results of imprecise and/or inconsistent manufacturing operations performed in areas where the graphics are located.

Abstract: A method for drape forming a laminated composite charge, the method including placing the laminated composite charge on a forming tool and redirecting forming forces applied to the laminated composite charge during drape forming to counteract wrinkle forming movement between plies of the laminated composite charge.

Abstract: Method for the production of a pacifier teat and pacifier teat with a suction section forming a cavity, to which suction section a shaft adjoins, wherein an elastic hollow body having suction section and the shaft is pre-formed in an injection or in a dipping process and opposite wall sections of the pre-formed hollow body are connected with each other in the region of the shaft.

Abstract: A scanning lidar system includes a first lens having a first lens center and characterized by a first optical axis and a first surface of best focus, a second lens having a second lens center and characterized by a second optical axis, a platform separated from the first lens and the second lens along the first optical axis, and an array of laser sources mounted on the platform. Each laser source of the array of laser sources has an emission surface lying substantially at the first surface of best focus of the first lens and positioned at a respective laser position. The scanning lidar system further includes an array of photodetectors mounted on the platform. Each photodetector of the array of photodetectors is positioned at a respective photodetector position that is optically conjugate with a respective laser position of a corresponding laser source.

Abstract: There is disclosed a method of manufacturing a composite component comprising a main body and an integral flange, the method comprising: applying fibre reinforcement material on a tool having a main body portion and a flange-forming portion to provide a pre-form having first, second and third contiguous regions, the first region corresponding to the main body of the component and the second region corresponding to the integral flange of the component; and causing relative movement between the flange-forming portion and the main body portion so that the second region of the pre-form deforms to form the flange; wherein the relative movement of the flange-forming portion and the main body portion causes sliding movement between the second and third regions of the pre-form and the flange-forming, thereby producing a tension force in at least the second region of the pre-form during forming of the flange.

Abstract: A process for forming an article having at least one precision surface is disclosed. The process includes providing a thin sheet in contact with a surface of a mandrel. The process then includes establishing a pressure differential between opposite sides of the thin sheet using a collapsible enclosure so that the thin sheet is drawn onto the mandrel surface, thereby causing the thin sheet to substantially conform to the shape of the mandrel surface. The shaped thin sheet is then secured to a support member to define the article. The article is then removed from the mandrel. The front surface of the thin sheet defines the precision surface of the article. A process for forming a dual-sided precision article is also disclosed, along with an adaptive optical system and method that employs the precision article.

Abstract: A vehicle includes an input apparatus configured to sense pressure through a pressure sensing area and a vibration generator configured to include a first layer and a second layer, in which a plurality of actuators for generating vibration is arranged. The first and second layers are stacked at positions corresponding to pressure sensing positions of a pressure sensing area. The apparatus includes a controller configured to control the vibration generator to generate a first vibration at a position corresponding to a sensing position of the pressure on the pressure sensing area through the first layer, and to generate a second vibration at a position corresponding to a direction of the sensed pressure on the pressure sensing area through the second layer. A method of controlling the vehicle utilizes the input apparatus.

Abstract: A system is presented for monitoring and controlling in a sterilizable environment the peeling of a cover from a tub sealed by the cover. The system employs a platform having a fiducial source locating structure for holding the tub, a cover removal station disposed to engage with the cover and to peel the cover from the tub, a light source disposed to illuminate a portion of the platform proximate the cover removal station, a light sensor sensitive to light from the light source and disposed to preferentially collect and measure light diffusely reflected from the illuminated portion of the platform, and a controller with software to operate the system. An associated method for monitoring and controlling the peeling of the cover involves moving a peeled portion of the cover into a predetermined peeling monitor zone within the illuminated portion of the platform, and measuring an intensity of light from the light source diffusely reflected specifically from the peeling monitor zone.

Abstract: The display device according to an embodiment of the present invention comprises: a display unit (20) emitting visible light (L2) of linearly polarized waves having display information, an infrared light-cutting section (30) transmitting the visible light (L2) from the display unit (20) and reducing an incident quantity of infrared light on the display unit (20), and a reflecting section (40) reflecting visible light (L3) transmitted through the infrared light-cutting section (30); the infrared light-cutting section (30) comprising a first polymer film (31) and a second polymer film (32) disposed on the first polymer film (31), the first polymer film (31) and the second polymer film (32) both having anisotropy of refractive indices and having a first axis (Ax1) having a highest of the refractive indices, the first axis (Ax1) of the first polymer film (31) and the first axis (Ax1) of the second polymer film (32) intersecting in a planar view.

Abstract: The present invention relates to a method of applying a film to a body. In this respect, a film is first applied to and positioned at a transfer mold and the body to be film coated is introduced into the transfer mold to which the film to be attached is applied or the transfer mold to which the film to be attached is applied is introduced into the body to be film coated so that the film is located between the body and the transfer mold. In the further course, a vacuum is applied in a region between the body and the film and/or an excess pressure is applied in a region between the transfer mold and the film so that the film moves from the transfer mold onto the body. A particularly simple method that is fast to be carried out is thereby provided for applying a film to a surface.

Abstract: A method for forming an elastomeric laminate includes the steps of providing a first coverstock material; SELF'ing the first coverstock material to create a pre-SELFed coverstock layer having a primary activation pattern comprising SELF-specific land areas; providing an elastomeric layer; and joining the elastomeric layer to the pre-SELFed layer at zero relative strain, such that the elastomeric layer and pre-SELFed coverstock layer are joined at one or more bonding sites.

Abstract: A multilayer material is disclosed which consists of polyethylene foam sandwiched between two external layers of high-density polyethylene. A two-step manufacturing process for forming such a multilayer material is disclosed, which consists of (1) thermal bonding of a roll stock of PE foam with a roll stock of HDPE/LDPE laminate, followed by cutting into composites, and (2) thermal bonding of two composites to form a multilayer material.

Abstract: Disclosed is a manufacturing method of a gas sensor element. The gas sensor element has a plate shape extending in a direction of an axis thereof and includes: a detection portion arranged on a front end side of the gas sensor element to detect a specific gas component in a gas under measurement; and a porous protective layer formed around the detection portion. The manufacturing method of the gas sensor element is characterized in that the porous protective layer is formed by press forming of a raw material powder.

Abstract: An infrared welding system for joining two parts made of thermoplastic material comprises a pair of infrared heaters for heating the two parts while spaced from each other; and energizing the infrared heaters to emit infrared heat and directing the emitted infrared heat onto selected portions of the opposed surfaces of the parts to melt at least portions of the opposed surfaces, while directing an inert gas onto the selected portions to prevent ignition of the melted thermoplastic material. The two parts are clamped together by moving at least one of the parts toward the other part to press the melted surfaces of the parts into contact with each other. The parts are cooled while they remain clamped together to solidify the molten thermoplastic material and thus weld the two parts together.

Abstract: A method of making a circular ore separation wheel, for concentration critical stategic rare earths, and preciouse metals, such as gold. The method comprising: 1) forming a base section of the circular ore separation wheel using 3D printing; 2) forming a central hole in the base section being centrally located in the circular ore separation wheel; 3) forming a plurality of teeth, using 3D printing, upon the base section, having a inner end proximate to the central hole and extending therefrom in a circularly radiating direction and having an outer end opposite the inner end with different sizes on the same length of tooth, 4) forming a plurality of micro grooves from about 4.5-0.

Abstract: A support structure for vibrating screening machine with either a flat screen deck or a crowned screen deck which use a coped and then capped variation of the same prefabricated rectangular tubular cross-member but in rotated orientations. The machine further providing support for a crowned screen media without using a crowned cross-member by providing stringers with differing vertical heights with the centermost stringer having the most height above a flat top cross-member.

Abstract: Disclosed is a material separation apparatus with a circular ore separation wheel and a number of projected spiral portions, tilted towards a central hole, provided on a concave shaped interior surface. A pair of adjacent projected spiral portions forms less than 90 degree angle to create a negative draft for an upward movement of the heavy materials during rotation of the circular ore separation wheel. The central hole of the circular ore separation wheel is attached with a central hub to rotate the circular ore separation wheel to trap the collected heavy materials in between the adjacent projected spiral portions. The circular ore separation wheel is kept in a tilted position, forming a predetermined tilting angle with the vertical, is rotated at a predetermined speed to help the created negative draft to separate the heavy material(s) from a mixture of heavy and light materials fed into the circular ore separation wheel.

Abstract: The present invention relates to a device for producing a reinforcing structure, which comprises a fiber-reinforced strip having a thermoplastic material, onto a molded body surface. The device is characterized in that emission direction vectors of at least two laser diodes of a laser diode array are aligned in a non-parallel manner to one another and are directed toward one another in the direction of a heating surface of the strip and/or the molded body surface.

Abstract: A method for forming an elastomeric laminate includes the steps of providing a first coverstock material; SELF'ing the first coverstock material to create a pre-SELFed coverstock layer having a primary activation pattern comprising SELF-specific land areas; providing an elastomeric layer; and joining the elastomeric layer to the pre-SELFed layer at zero relative strain, such that the elastomeric layer and pre-SELFed coverstock layer are joined at one or more bonding sites.

Abstract: A method for forming deformation crystal twins in piezoelectric materials is disclosed. The method includes obtaining a crystalline piezoelectric material and deforming the crystalline piezoelectric material using a load. The method also includes heating the deformed crystalline piezoelectric material in an oxidative atmosphere to a predetermined temperature for a predetermined time to form a plurality of deformation crystal twins in the crystalline piezoelectric material. The method also includes allowing the crystalline piezoelectric material to cool to room temperature, and removing the load that induces the deformation of the crystalline piezoelectric material. Additionally, the deformation of the crystalline piezoelectric material is achieved by at least one of the following: compressing, stretching, shearing, torsion, and bending of the crystalline piezoelectric material.

Abstract: An apparatus includes a sub with recesses along an exterior wall to receive inserts, an antenna case including a coil surrounded by a sacrificial wear portion of a material through which signals between the coil and a formation of interest may pass. An eroded outer wall of the sacrificial wear portion is restorable by application of an uncured restorative material to the antenna case. A method includes securing an antenna case having a coil there within onto a sub, surrounding the coil with a metal sleeve shield, and radially receiving and securing a multi-piece sacrificial wear member intermediate the antenna case and a retainer ring having a threaded bore. The multi-piece sacrificial wear member is replaceable after use by unthreading the retainer ring to release the sacrificial wear member for radial removal from the sub.

Abstract: An interposer including stress-engineered nonplanar microsprings may provide interconnection of bonding pads of electronic structures disposed above and below the interposer. The lateral offset between an anchor portion of a microspring disposed for contact at a bottom surface of the interposer and the tip of the microspring located in a free portion of the microspring for contact and deflection over a top surface of the interposer permits the interconnection of devices having different bonding pad pitches. Microspring contacts at the free portion permit temporary interconnection of devices, while solder applied over the free portion permit permanent connection of devices to the interposer.

Abstract: To improve peelability, yield in a peeling step, and yield in manufacturing a flexible device. A peeling method is employed which includes a first step of forming a peeling layer containing tungsten over a support substrate; a second step of forming, over the peeling layer, a layer to be peeled formed of a stack including a first layer containing silicon oxynitride and a second layer containing silicon nitride in this order and forming an oxide layer containing tungsten oxide between the peeling layer and the layer to be peeled; a third step of forming a compound containing tungsten and nitrogen in the oxide layer by heat treatment; and a fourth step of peeling the peeling layer from the layer to be peeled at the oxide layer.

Abstract: The present invention are methods for fabrication of micro- and/or nano-scale adhesive fibers and their use for movement and manipulation of objects. Further disclosed is a method of manipulating a part by providing a manipulation device with a plurality of fibers, where each fiber has a tip with a flat surface that is parallel to a backing layer, contacting the flat surfaces on an object, moving the object to a new location, then disengaging the tips from the object.

Abstract: Aspects of the disclosure relate to systems and techniques for inspecting seals for high altitude balloons. In one example, a system may include a reflective surface, a translucent material on the reflective surface, and a movable light source configured to move along the reflective surface and provide light to the reflective surface. The light is provided such that it is reflected from the reflective surface and through the translucent material in order to backlight a balloon envelope seal for inspection. A method for inspecting a balloon envelope seal may include placing balloon envelope material on a table, forming a seal between portions of the material, moving a light over the seal, shining light onto a reflective portion of the table below the seal to backlight the seal, and inspecting the seal using the backlighting of the seal.

Abstract: A method of making a mechanical fastener. The method includes providing a slit web having mechanical fastening elements, applying tension to the slit web in the machine direction, and spreading the slit web in the cross-machine direction by directing its side edges over two rotating diverging disks to provide a spread mechanical fastening web. The slit web includes a plurality of interrupted slits that are interrupted by intact bridging regions of the web. The two rotating diverging disks are laterally spaced and have a support surface between them that contacts the slit web during the spreading. The spread mechanical fastening web includes multiple strands of the slit web attached to each other at least at some of the intact bridging regions and separated from each other between at least some of the intact bridging regions.

Abstract: Ply wrinkling during hot drape forming of a composite laminate is reduced at corner radii. A tensioning material placed over an uncured composite laminate charge maintains a compressive force on the laminate charge as the charge is formed over a tool.

Abstract: An elastic laminate is made by first coextruding a film having an elastic outer film layer formed of a styrene-block copolymer and an inner film layer of lesser elasticity than the outer layer. An outer fleece web with an outer adhesive layer is then adhered to the outer film layer, and an inner fleece web with an inner adhesive layer is adhered to the inner film layer so as to form between the inner fleece web and the inner film layer a bond that is weaker than a bond formed by the outer adhesive layer between the outer fleece web and the outer film layer. Thereafter the coextruded film bonded by the inner and outer adhesive layers to the outer and inner fleece webs is prestretched such that the weak bond formed by the inner adhesive layer separates only locally from the inner film layer but the bond formed by the outer adhesive layer remains intact.

Abstract: The present disclosure provides methods of manufacturing a body adhering absorbent article oriented in the machine direction wherein the body adhering absorbent articles have reduced or eliminated curl. The articles are manufactured with reduced curl by selectively reducing or eliminating the shell elastic tension in regions where components of the body adhering absorbent article are to be attached to form the composite absorbent article web. In certain aspects the body adhering absorbent articles are manufactured by supplying an elastic web of shell material having a longitudinal and transverse direction, stretching the web of shell material in the longitudinal direction, deadening at least one region of the stretched web of shell material, attaching at least one absorbent article component to at least a portion of the longitudinal deadened zone to form a composite web material, and cutting the composite web material to form a body adhering absorbent article.

Abstract: A method of separating strands of a slit web is disclosed. The method includes providing a slit web having a length in a machine direction and running the slit web in the machine direction onto a stretchable surface. The slit web includes multiple strands provided by a plurality of slits extending in a first direction not parallel to a cross-machine direction. The slit web is in contact with the stretchable surface for a path length in the machine direction, and for at least a portion of the path length, the stretchable surface is stretching in the cross-machine direction. The traction between the slit web and the stretchable surface during the stretching at least partially separates at least some of the multiple strands of the slit web in a second direction transverse to the first direction. A method of increasing a width of a polymeric netting is also disclosed.

Abstract: An apparatus comprising a frame and a pressure sensitive adhesive applied to at least a portion of the frame, where the pressure sensitive adhesive is arranged to bond a pre-strained film to the frame is disclosed. A method of making the apparatus also is disclosed. Also disclosed is a method of preparing a stretch frame for manufacturing electroactive polymer devices thereon.

Abstract: A filament winding method performs a hoop winding step including a first step of fixing an end of a fiber bundle to a liner surface at a starting position of hoop winding, a second step of hoop winding the fiber bundle having the end fixed to the liner surface in the first step, a third step of fixing the fiber bundle hoop wound in the second step to the liner surface at an ending position of hoop winding, and a fourth step of cutting the fiber bundle upstream in a fiber bundle supplying direction of the position where the fiber bundle is fixed in the third step.

Abstract: Methods of manufacture include welding two or more elongate members together to define an elongate weldment, wherein the welding results in a weld region that is in tension and regions adjacent to the weld region that are in compression, and longitudinally stretching the elongate weldment. Tools and systems for manufacturing elongate weldments, as well as apparatuses, such as aircraft, that include elongate weldments, also are disclosed.

Abstract: An adjustable mechanism for a motor vehicle is used to adjust an adjustable element in a motor vehicle, especially a seating part. Said mechanism comprises a spindle nut comprising an axis, said spindle nut co-operating with a thread spindle and comprising external toothing on the external surface thereof which is in contact with an additional drive element. The external toothing of the spindle nut is formed by recesses in the external surface of the spindle nut which are inwardly turned in a radial manner, the teeth depths thereof diminishing in the direction of at least one axial end of the spindle nut.

Abstract: A film treating apparatus includes a film feeder configured to feed a film having first and second surfaces, a film processor configured to process the film fed from the film feeder, a film collector configured to collect the film processed by the film processor, a fixed support unit configured to support at least one of the first or second surface of the film and to guide the movement of the film, and a variable support unit configured to apply tension to the film while moving from the first surface of the film toward the second surface of the film.

Abstract: A method for transfer of a two-dimensional material includes forming a spreading layer of a two-dimensional material on a first substrate. The spreading layer has at least one monolayer. A stressor layer is formed on the spreading layer. The stressor layer is configured to apply stress to a closest monolayer of the spreading layer. The closest monolayer is exfoliated by mechanically splitting the spreading layer wherein at least the closest monolayer remains on the stressor layer. The at least one monolayer is stamped against a second substrate to adhere remnants of the two-dimensional material on the at least one monolayer to the second substrate to provide a single monolayer on the stressor layer. The single monolayer is transferred to a third substrate.

Abstract: A laminated sheet includes a surface layer disposed on an outermost surface, a heat moldable resin layer, and an adhesive layer to be adhered to the substrate, the surface layer containing a (meth)acrylic copolymer obtained by copolymerizing a monomer blend containing an alkyl (meth)acrylate having an alkyl group having 1 to 4 carbon atoms and one or more kind of (meth)acrylic monomer expressed by formula (1): CH2?CR1COR2 (1) wherein R1 is a hydrogen atom or a methyl group, and R2 is selected from a group including an alkoxy group having 5 or more carbon atoms, a cycloalkoxy group having 5 or more carbon atoms, a hydroxyl group, and a nitrogen-containing group.

Abstract: Described herein is a novel method and apparatus for preventing spark propagation from a hydraulic joint to a surrounding medium, such as a fuel source. The hydraulic joint includes a fitting and a tube. A tip seal may be placed about the edge of the hydraulic fitting or a sleeve may be placed about the joint, each resulting in an independent mechanical barrier between the joint and surrounding medium, thereby preventing spark propagation to the surrounding medium.

Abstract: A method is described for forming a lining on an inner surface of a pump casing. The lining can protect the pump casing from corrosive and abrasive fluids. The method disclosed improves the durability and reliability of the lining by introducing a compressive pre-stress to the lining when the casing is not loaded such that during normal operation, the lining can be in a stress state near neutral and avoid failures related to excessive tensile strains. The method includes securing at least a portion of the casing in a stationary position and applying an external load to deform the casing. The method further includes depositing the lining onto the inner surface of the casing, curing the lining, and removing the external load to pre-stress the lining.

Abstract: The invention relates to a method of assembling composite material parts (10, 12). The method makes provision for: mounting (S6) the parts for assembly under stress on a stand (14), which parts have been partially polymerized; heating (S7) these parts so as to polymerize them completely, thereby enabling the stresses in the parts to be relaxed and enabling them to match the shape of the sand; cooling (S8) the parts; and assembling (S9) in conventional manner the parts as cooled in this way.