Abstract: In a metal-fiber reinforced plastic (FRP) composite, the FRP and the metal member are bonded together, so internal stress (thermal stress) is generated due to the misfit of coefficients of thermal expansion of the metal member and the FRP. Not only does the binder layer peel off and the mechanical properties of the FRP cannot be obtained, but also defects in appearance (surface strain) occur. Therefore, the technical problem is to secure the mechanical properties as a composite while easing the internal stress and keeping surface strain from being generated. The metal-fiber reinforced plastic (FRP) composite according to the present invention solves the technical problem by sandwiching an FRP between two metal members and not having at least one of the metal members joined (bonded) with the FRP. Further, it is possible to arrange an intermediate member between the other metal member and the FRP and sandwich the FRP between the two metal members through the intermediate member.

Abstract: A composite preform including a preform and a plastic member in close contact with the outer surface of the preform is made by preparing the preform made of plastic material and arranging the plastic member to surround the outer surface of the preform. Subsequently, the composite preform is heated and inserted in a blow molding die and undergoes blow molding in the blow molding die, by which the preform and the plastic member of the composite preform are inflated integrally and a composite container is obtained.

Abstract: A delaminated container has a main body portion and an opening portion. An accommodation space of the delaminated container is formed by a body inner surface of the main body portion and an opening inner surface of the opening portion. The delaminated container includes a first layer and a second layer. The first layer includes a first tightly-attached section. At the main body portion, the first layer is located closer to the body inner surface than the second layer located thereto and is exposed on the body inner surface. The second layer includes a second tightly-attached section. The first tightly-attached section and the second tightly-attached section are tightly attached to each other. The first tightly-attached section and the second tightly-attached section are both located at the opening portion of the delaminated container.

Abstract: Provided is a PET bottle preform in which delamination is suppressed and a method for the production of the preform. An anchor layer containing a polyester-based urethane resin is formed on an outer surface of the preform.

Abstract: A system for manufacturing a family of intake manifolds includes first and second intake molds. One of the first and second intake molds includes an outlet insert. A first intake manifold includes: a plenum chamber, a plenum chamber air inlet; a first number of intake runner passages; and the first number of outlets. Each of the outlets is fluidly connected to a corresponding one of the first number of intake runner passages. The second intake manifold includes: the plenum chamber; the plenum chamber air inlet; the first number of intake runner passages; and a second number of outlets. Each of the second number of outlets is fluidly connected to a corresponding one of the first number of intake runner passages. At least one of the first number of intake runner passages is not fluidly connected to any one of the second number of outlets of the second intake manifold.

Abstract: The part under the neck ring (9) of a preform for blowing a PET bottle of predetermined capacity not larger than 75 cl and with a max. material weight of 15 g, is inclined by an angle ? less accentuated than normal, max. 17°, which allows to make a preform with a thickness t2 of the wall thinner than 1.9 mm and a thinner inner diameter of the preform body in order to allow a lower stretch ratio starting from a larger preform to obtain the final bottle of predetermined capacity.

Abstract: A process includes: supplying a main resin from outer and inner flow channel, to a joined flow channel at a predetermined supply velocity for a predetermined time; supplying a second resin from a middle flow channel to the joined flow channel simultaneously with the main resin at a predetermined supply velocity for a certain time within the predetermined time; and sliding a shut-off pin to bring the pin forefront to a predetermined position near an outlet of the inner flow channel, open to the joined flow channel, before the second resin is supplied, or during a time starting after a time from the start of the second resin supply and ending with the termination of the supply, so that the velocity of main resin supply from the inner flow channel to the joined flow channel is reduced to a predetermined level by adjusting the degree of aperture for the outlet.

Abstract: There is disclosed an in-mould labelling process for the manufacture of a labelled article comprising the steps of: feeding a labelstock web into a mould; forming an article in the mould such that the formed article contacts and effectively adheres to a label of the labelstock web; detaching the adhered label from the labelstock web; and removing the formed and labelled article from the mould.

Abstract: A method and a preform for blow molding to form a plastic container are disclosed, the preform having a coating formed on an inner surface thereof. The coating reduces a loss of heat energy from the heated preform during expansion thereof to ensure the preform maintains a temperature at or above the phase change/solidification temperature of the material forming the preform.

Abstract: A system and method for hydraulic blow molding a plastic preform into a container. The system includes a nozzle having a nozzle body with a main bore extending therethrough and an outlet for ejecting molding medium into a preform positioned within a mold. A minimum internal diameter is defined within the body of the preform, which is bound on opposing ends between an open end and a closed end. To form the container, a liquid stream is injected into the preform. The liquid stream is defined by the outlet so as to have an external diameter that is less than the minimum inner diameter of the preform, allowing the stream to impinge upon the close end of the preform without impinging upon a transition of the preform, where the minimum inner diameter of the preform is reduced from the diameter of the finish.

Abstract: A method of making a structural part having a thermal protection barrier is provided. The method includes: making a fiber structure; introducing the fiber structure into an injection mold having first and second chambers, the fiber structure being placed in the second chamber; placing a movable separator partition between the first and second chambers; injecting a first resin into the first chamber; solidifying the resin injected into the first chamber; withdrawing the movable separator partition; injecting a second resin into the second chamber containing the fiber texture; and hardening the resins present in the first and second chambers of the injection mold in such a manner as to obtain a part having a structural core made of composite material constituted by fiber reinforcement densified by an organic matrix, and a thermal barrier constituted by a layer of hardened resin.

Abstract: Provided is a footwear last, being of a structure where its interior is hollow. The method includes steps of installing a parison for manufacturing a plastic vessel between left/right molds for manufacturing the footwear last, with the left/right molds opened; injecting a last manufacturing material into a tube of the parison; blowing air while closing the left/right molds; molding the material in a temperature of about 400 C to 70° C. and under an injection pressure of about 600 kg/cm2 to 1400 kg/cm2; and completing the last whose interior is hollow.

Abstract: The invention relates to a method for producing a structural element comprising a fiber-reinforced plastic. According to the invention, a flexible hose is provided with a tubular woven fabric and shaped into the desired form. A plastic that is preferably in liquid form is applied to the tubular woven fabric and is subsequently cured.

Abstract: The invention provides a method of manufacturing a hollow fiber reinforced structural member, in particular for air vehicles, comprising the steps of providing a first circular braiding layer, positioning a flat strengthening body comprising at least one fabric layer having warp fibers and a woof fiber against a part of the surface of the first braiding layer, providing a second braiding layer around the first braiding layer and the strengthening body, positioning the combination of the first braiding layer, the strengthening body and the second braiding layer in a mold, impregnating the combination with resin, removing the combination as impregnated with a resin from the mold.

Abstract: A method of manufacturing a wind turbine blade shell part comprising fiber material impregnated with cured resin is described. The method comprises the steps of: a) providing a first mold part having a first forming surface with a contour that defines at least a part of an outer surface of turbine blade shell part, b) arranging fiber material in the first mold part, the fiber material comprising fibers of a magnetizable material, c) providing a resin in the first mold part simultaneous with and/or subsequent to step b), and d) curing the resin in order to form the wind turbine blade shell part or wind turbine blade. The fiber material is retained against the first forming surface by use of magnet means during step b) and/or step c).

Abstract: A method facilitates fabricating a cellular cushion. The method comprises injecting material into a mold in an injection molding process to form a cushion first layer that includes a plurality of hollow cells that extend outward from the base and are each coupled together in flow communication, coupling a second layer to the first layer, and coupling an injection stem in flow communication to the plurality of hollow cells to enable an operating pressure within the cells to be changed.

Abstract: An air intake hose for a vehicle may include a blow molding portion formed in a hollow hose shape by blow molding, an injection molding portion formed in a hollow hose shape by injection molding, and a coupling portion formed at one end of the blow molding portion, wherein the blow molding portion and the injection molding portion may be coupled with each other by injecting a material forming the injection molding portion into an injection mold in a state in which the coupling portion may be inserted in the injection mold.

Abstract: Disclosed is a polystyrene based polymer/layered compound nanocomposite for injection blow molding or injection stretch blow molding of articles. The nanocomposite can reduce shrinkage and warpage to the preform during the reheating process compared to neat polystyrene. The incorporation of layered compounds can increase the processability of PS preforms, help improve heating efficiency, and improve bottle mechanical properties. The layered compound can be treated with chemicals or compounds having an affinity with the styrene monomer or polystyrene, thus producing a treated layered compound having an affinity with the styrene monomer or polystyrene. The monomer and the layered compound can be combined prior to polymerization. The polymer and layered compound can be combined by solution mixing in a solvent.

Abstract: A load bearing panel member having a first portion, a second portion, and an appearance surface portion is formed by injection molding such that the first portion includes a plurality of rib members forming a grid pattern on the first portion and another plurality of rib members extending toward the periphery of the first portion which may be non-orthogonal to each other and to the rib members forming the grid pattern. A tubular cavity may be formed within each of the non-orthogonal rib members by injecting a gas into the rib member during the molding process forming the panel. An appearance surface portion attached to the first portion and second portion of the panel member forms an integral hinge between the first and second portions of the panel member. The panel member may be configured as a floor panel of a vehicle.

Abstract: An endoscope flexible tube comprises: a tubular structure having flexibility; and a shell layer on an outer peripheral surface of the tubular structure, wherein the shell layer has a two-layer structure including a rigid resin layer of a rigid resin and a soft resin layer of a soft resin, and wherein the two-layer structure is maintained over the entire flexible tube in its length direction.

Abstract: Disclosed is an injection molding device and process for a test tube shaped preform, that can laminate a colored layer at certain positions with a certain thickness accurately. Included is a nozzle section, in which a molten main resin and second resin are joined together to form a joined resin mass, the nozzle section including: an outer flow channel through which the main resin flows, an inner flow channel through which the second resin flows, a cylindrical column-shaped flow channel where the second resin joins the main resin, a first confluence where the main resin flows into the joined flow channel, a second confluence where the second resin flows into the joined flow channel wherein the first confluence is downstream of the second confluence, and a cylindrical shutoff pin inserted in the joined flow channel to open or close one or both the first and second confluences.

Abstract: Method to improve the barrier properties of composite gas cylinders and high pressure gas cylinder having enhanced barrier properties. The instant invention pertains to a new method for improving the barrier properties of composite gas cylinders for the storage of gas, by wrapping the outer surface of a composite gas cylinder with a plastic film comprising a barrier material in a winding process. The composite gas cylinder comprises an inner liner made of polyolefin and an outer fibre-reinforced, pressure supporting layer. The barrier material may comprise polyamide, polyester, halogen substituted polymer, EVOH or a metallization. The invention pertains also to a high pressure composite gas cylinder having enhanced barrier properties and its use as a fuel tank in gas driven automotive vehicles equipped with a combustion engine.

Abstract: The technical problem to be solved by the invention is to change the thickness of the colored resin layer of the preform gradually in the upward or downward direction, by utilizing a tendency of gradual decrease in the thickness of the colored resin layer caused by the flow of the main resin inside the preform mold when the main resin and the colored resin are injected into the mold. The objects of this invention is to provide a biaxially drawn, blow molded bottle having new decorativeness created in which sophisticated color gradations associated with color density are created in the body of this bottle.

Abstract: A dual interface separable insulated connector comprising a faraday cage molded over a bus bar for use in an electric power system and a method of manufacturing the same are provided. The faraday cage can be disposed within a semi-conductive shell. The configuration of the separable insulated connector can provide for easier bonding between the faraday cage and insulating material. Additionally, the configuration can eliminate or reduce the need to coat the bus bar with an adhesive agent and to smooth the metal bus bar to remove burrs, other irregularities, and sharp corners from the bar. Manufacturing the dual interface separable insulated connector can include molding a semi-conductive rubber faraday cage over a conductive bus bar, inserting the faraday cage into a shell, and injecting insulating material between the faraday cage and shell.

Abstract: The preform of the biaxially drawn, blow-molded bottle comprises polyethylene terephthalate layers 2 and at least a gas barrier layer 3 laminated with the polyethylene terephthalate layers. The gas barrier layer 3 extends downward from a level halfway to the height of the neck 4 including the neck ring 5, or at least from above the neck ring 5, down virtually to the lower end of body 6. The gas barrier layer 3 inside the wall of the neck 4 has an average thickness corresponding to a third (?) or less of the maximum thickness of the gas barrier layer 3 inside the wall of the body 6, allowing most of the gas barrier material to be located in the wall of the body 6. Thus, the gas barrier material is effectively utilized, and in the case of the heat-resistant bottle, the neck has the predetermined dimensions without fail after the whitening treatment.

Abstract: The technical problem to be solved is to change the thickness of the colored resin layer of the preform gradually in the upward or downward direction, by utilizing a tendency of gradual decrease in the thickness of the colored resin layer caused by the flow of the main resin inside the preform mold when the main resin and the colored resin are injected into the mold. This involves adjusting the injection pattern including the time of starting and ending the supply of the main resin and the colored resin, and pressure or velocity profiles, reducing the thickness of the colored resin layer gradually upstream or downstream, injection-molding the preform in which a color-gradated portion associated with the thickness of the colored resin layer has been formed, and biaxially drawing and blow molding this preform into a bottle having a color-gradated portion.

Abstract: A manufacturing process for a bicycle hub includes steps of preparing dry carbon fiber fabric, covering around inner tube, placing in upper and lower molds, injecting adhesive into the upper and lower molds, and forming by heating and pressurizing. Because the manufacturing process uses tubular dry carbon fiber fabric to form a hub shell, the manufacturing process is simple and the produced hub has few defects. Thus, the production rate and product stability are enhanced.

Abstract: An apparatus for forming a container generally comprises a first mold part having an injection mold portion and a blow mold portion and a second mold part having a core pin. The core pin is configured to cooperate with the injection mold portion in a first position to define an injection mold cavity for forming a preform and an integral cap. The core pin is also configured to cooperate with the blow mold portion in a second position to define a blow mold cavity for forming a receptacle from the preform. The cap may be closed at the blow mold portion to seal the receptacle. One or more threads may be formed on a neck of the container.

Abstract: A method for producing a display member that can restrain lights from leaking from a remainder chip of a runner and a portion around the remainder chip. The method includes laminating a transparent layer on a light-diffusing layer; forming slant surfaces each having an slant angle of more than 45 degrees with respect to an extending direction D of a runner, the slant surfaces being provided around a portion on the rear surface of the transparent layer to which the runner is connected and being inclined cutting out the runner at a position along and near the slant surfaces; and forming a shielding layer on a remainder chip of the runner and on a rear surface of the display member main body inside the remainder chip by spraying a light-shielding material onto a front surface of the display member main body and a side part of the remainder chip.

Abstract: Provided is a multi-layer container excellent in delamination resistance and gas barrier property, which can be manufactured without employing any molding method involving a special apparatus, which increases a production cost, and a complicated step. Specifically, the multi-layer container includes a laminate structure of three or more layers having at least a gas barrier layer between an innermost layer and an outermost layer, in which the gas barrier layer in a site formed of the laminate structure has a portion having a thickness 0.01 to 0.9 times as large as the maximum thickness of the gas barrier layer. Further, provided are a mold suitable for manufacturing the multi-layer container, and a manufacturing method for a multi-layer container using the mold.

Abstract: A method of forming an essentially tubular blowable plastics parison comprises injection moulding an essentially tubular parison around a mould surface. Means for injecting flowable plastics material to said injection mould at an injection station to form a parison within said mould surface are used. These comprise a plurality of individual injectors, with at least a secondary injector being capable of injecting a different composition from the remaining primary injectors.

Abstract: A medicament source has a container and a crimped closure. The closure sealingly holds to the container a metered-dose release valve, of which the spout only is visible externally. The container has a neck and a protruding rim at which the crimp locates. The container is of molded polymer and has an outer, perforate sleeve of aluminum, providing mechanical strength for pressure retention. The neck has a relatively thicker wall thickness and the end is domed inwards, both for pressure retention. The polymer is of three layers or laminations. The innermost layer is of polytetrafluoroethylene (PTFE) material to provide an inert layer with which the medicament and its propellant will not react or combine in any way. The middle polymer layer is of nylon material to provide a propellant tight layer, to contain the propellant, whose molecules may be able to pass through the PTFE layer. The outer polymer layer is of polypropylene (PP) to provide both water tightness and mechanical integrity of the container.

Abstract: In a method for manufacturing a socket for connecting a fluid conduit to a container made from thermoplastic synthetic material, wherein the socket has a first socket-shaped material arrangement of at least one layer and a second socket-shaped material arrangement of at least one layer, wherein the first material arrangement is thinner than the second material arrangement and the first and second material arrangements are both made of thermoplastic material at least predominantly and fuse with one another to form a fused joint, the first material arrangement is molded by extrusion or injection molding to a plane film or plate or to a hose. The film or plate is deepdrawn or the hose is blowmolded to a first preform with a socket contour. The second material arrangement is applied onto one side of the first preform in a socket contour by injection molding, coinjection or a monosandwich process.

Abstract: The technical problem to be solved is to change the thickness of the colored resin layer of the preform gradually in the upward or downward direction, by utilizing a tendency of gradual decrease in the thickness of the colored resin layer caused by the flow of the main resin inside the preform mold when the main resin and the colored resin are injected into the mold. This involves adjusting the injection pattern including the time of starting and ending the supply of the main resin and the colored resin, and pressure or velocity profiles, reducing the thickness of the colored resin layer gradually upstream or downstream, injection-molding the preform in which a color-gradated portion associated with the thickness of the colored resin layer has been formed, and biaxially drawing and blow molding this preform into a bottle having a color-gradated portion.

Abstract: An air intake duct 8 is fixed to a rear of a cab 3 of a transport vehicle to extend vertically, air intakes 6a, 6b, 6c, 6d, 6e and 6f being opened on an upper portion of the air intake duct for suction of fresh air through the intakes as engine intake air. The air intake duct 8 is constituted by a blow-molded duct body 9 and an internal partition component 10 enclosed in the duct body in blow molding of the duct body 9 to partition an interior of the duct body 9 into a plurality of channels A, B, C, D, E and F reaching the air intakes.

Abstract: A container that includes a substantially rigid body having a neck defining an opening providing access to the body cavity, and a bag positioned in the interior of the body. The bag is formed of thermoplastic material and has a neck from which there radially extends a flange which rests on the body and which defines a hole for providing access to the cavity of the bag and for sealedly housing the body of a hermetic pump (P) operable manually to withdraw the fluid substance (F) from the bag and feed it to the outside through its dispensing stem (S). The bag is formed by hot blow-moulding a preform positioned directly on the inside of the container. The preform surface presents at least externally a plurality of microspheres which roughen its surface.

Abstract: In a method and apparatus for producing a composite component, a tubular hollow section blank is placed into a die cavity of a combination tool comprising an inner high-pressure shaping tool and an injection-molding tool. The combination tool is filled with a fluid in such a way that the blank is wetted from the inside by the fluid, and the ends of the combination tool are sealed by two axial molding plugs. The filled blank is then expanded under pressure . The finished hollow section is plastic-coated in the same tool. The hollow section is emptied after shaping in the sealed state, at least until it is no longer dripping, the pressurized fluid being expelled under pressure from the hollow section through at least one discharge channel formed in the axial molding plugs.

Abstract: A method of stretch-blow-molding a beverage container for containing a carbonized beverage which method comprises providing a preform (11) having a neck part and a body part. The preform includes an inner layer (24) of a first polymeric composition, an outer layer (12) of a second polymeric composition, and an intermediate layer (22) of a third polymeric composition. The third polymeric composition has adhesive surface properties relative to the first and second polymeric compositions, and the adhesive surface properties are permanently degraded by exposure to irradiation of a certain wavelength or certain wavelengths and intensity. The method further comprises mounting the preform onto a stretch-blow-molding device and blow molding the preform into the beverage container by irradiating the body part with radiation at least including the certain wavelength or certain wavelengths and intensity while protecting the neck part from any substantial radiation.

Abstract: The present invention uses a high-gain observer which contains the discrete-time arithmetic expressions derived from a mathematical model of an injection and pressure application mechanism in an electric-motor driven injection molding machine consisting of state equations and outputs an estimate of injection pressure, which is one of the state variables of the above state equations, by using a screw position signal and a servomotor current demand signal or actual motor current signal as inputs. The high-gain observer obtains the exact injection pressure estimate with very small time-lag without using a pressure detector. Thus the estimate of injection pressure fed by the high-gain observer can be adopted as a feedback signal of actual injection pressure for controlling injection pressure.

Abstract: The present invention provides a method for producing an injection molded panel member having a first portion, a second portion, and an appearance surface portion. The method includes placing the appearance surface portion of the panel member into a mold cavity. The mold cavity preferably includes a first chamber adapted to form the first portion of the panel member, and a second chamber adapted to form the second portion of the panel member. After the appearance surface portion of the panel member is inserted into the mold, molten plastic material and pressurized gas are injected into the first chamber of the mold cavity. After the molten plastic material is injected into the first chamber of the mold, molten plastic material is injected into the second chamber of the mold cavity. The molten plastic is then cooled until it solidifies. After the molten plastic is sufficiently cooled, the pressurized gas is vented and the panel member is removed from the mold.

Abstract: The technical problem to be solved by the invention is to change the thickness of the colored resin layer of the preform gradually in the upward or downward direction, by utilizing a tendency of gradual decrease in the thickness of the colored resin layer caused by the flow of the main resin inside the preform mold when the main resin and the colored resin are injected into the mold. The objects of this invention is to provide a biaxially drawn, blow molded bottle having new decorativeness created in which sophisticated color gradations associated with color density are created in the body of this bottle.

Abstract: A method and apparatus for blow molding an article wherein a parison is positioned between substantially opposed mold closures. The opposed mold closures and at least one other mold closure are advanced, wherein the at least one other mold closure is advanced into abutment with at least one of another of the substantially opposed mold closures, and another of the at least one other mold closure. Thereafter, a gas may be injected within the interior of the parison to form a molded article, the mold closures retracted along their respective axes, and the molded article removed.

Abstract: Overmolded containers and methods of manufacture thereof are disclosed, which may provide enhanced visual and tactile characteristics, enabling innovative packaging designs, improved grippability and thermal insulation. The containers can be made cost effectively manner, with minimal impact on polymer recycling streams. The methods of making the container include the steps of providing a container preform which comprises a thermoplastic polymer, such as a PET copolymer; overmolding an elastomeric material over at least a portion of the preform to form an overmolded preform; and blow-molding the overmolded preform to form an overmolded container. In one embodiment, the overmolded container is a beverage container.

Abstract: A method of manufacturing a multilayer or a monolayer plastic container is disclosed. The container has a barrier layer manufactured from (i) a polyester resin, preferably an aromatic polyester resin such as a polyethylene terephthalate, (ii) a polyamide material, preferably an aromatic polyamide material, and (iii) an oxygen scavenging material, preferably a transition method. The present invention also provides containers having a multilayer or a monolayer body. In the preparation of the barrier layer. a preform first is prepared by an injection-molding process wherein a preblend containing a diluent polyester, polyamide material, and an oxygen scavenging material is added to a base polyester during the injection molding process. The preform then is expanded to form a container.

Abstract: A housing for an electronic device includes a decorative film being tubular and including a substrate and a shading layer attached on a portion of an exterior surface of the substrate, an area of the decorative film which is not shielded by the shading layer defining a displaying section. A tubular main body is formed surrounding an outer surface of the decorative film by insert molding process.

Abstract: A method for forming an overmolded container by covering a hollow inner bottle made of resin with an injection of a molten resin which forms an outer. The method comprises steps of setting the inner bottle in a mold with a space therebetween for forming the outer and circulating a pressurized gas into and out of a hollow space of the inner bottle through an upper opening thereof. The pressurized gas is supplied through a first path which opens toward an inner wall of the inner bottle and discharged out of the inner bottle through a second path. The pressurized gas supplied into and discharged out of the inner bottle is adjusted in pressure while the molten resin is being injected to the mold.

Abstract: An acrylic resin film material comprising at least a multilayer structure polymer with a particular structure prevent a molded item from being whitened during insert- or in-mold molding and meet the requirement for surface hardness, heat resistance, and transparency or matting performance for vehicle applications. It is also possible to use an acrylic resin film material exhibiting a difference of 30% or less between haze values as determined in accordance with the testing method of JIS K7136 (haze measurement method) after and before a tensile test where a test piece with a width of 20 mm is pulled under the conditions of an initial inter-chuck distance of 25 mm, a rate of 50 mm/min and a temperature of 23° C. until an end-point inter-chuck distance becomes 33 mm as well as having a pencil hardness of 2 B or higher as determined in accordance with JIS K5400.

Abstract: A reinforcement insert includes superposed laps of fiber which are coupled to each other by a coupling fiber which passes through the laps in order to form fiber sections wherein at least certain sections thereof are rectilinear. The fiber sections and laps are immersed in a cured resin. The total density of the fibers that make up the insert ranges from 50% to 60% of the volume of the insert and the fiber sections take up 3%-10% of the volume of the insert. A method for creating a sandwich structure includes at least one such insert.

Abstract: The invention is directed to a process for reducing the gas permeability of a plastic material by applying a barrier coating on the plastic material comprising the steps a) pre-treatment of at least a part of the plastic material; b) applying at least one coating layer of polyvinyl alcohol on the pre-treated surface and c) applying at least on top coating layer of polyvinyl acetal on the polyvinyl alcohol layer.

Abstract: The present invention relates to a radome which has excellent transmission loss of radio waves and structural strength, which can be easily produced, and which has favorable workability, and a method of producing the same. The radome includes an olefin woven material and a glass cloth, in which the olefin woven material and the glass cloth are impregnated with a matrix resin to be integrated with each other, and the glass cloth is disposed closer to an inner side of the radome than the olefin woven material. As the olefin woven material, a woven material formed of an ultrahigh molecular weight polyethylene fiber can be used. As the matrix resin, an epoxy resin, a vinyl ester resin, an unsaturated polyester resin, or a silicone resin can be used.