An embodiment of the present invention provides an air injection valve-integrated spray for spraying and applying polyurethane foam to a desired portion of a tire. The spray includes a polyurethane foam chamber disposed at an end of a coupling portion and keeping polyurethane foam under pressure and an air delivery chamber delivering air injected from an air injection valve to a breaking portion of the polyurethane foam chamber, in which the breaking portion of the polyurethane foam chamber is broken by air coming out of the air delivery chamber, so the polyurethane foam is sprayed.

Disclosed are various embodiments of an extruded expandable barrier, and various processes and systems for manufacturing the same. Using various extrusion processes to form an extruded expandable barrier allows for a reduction in tooling costs while also allowing more flexible barrier designs. Such designs can be specifically tailored for a particular cavity or cavities to ensure that the barrier fills the cavity after expansion. In addition, design changes can occur with little to no tooling changes.

Systems and methods for improving adhesion of an insulating foam to a molded polymeric insulating structure through use of ozone gas for functionalization of molded polymeric surfaces of an internal cavity of the insulating structure.

A baffle or reinforcer includes a carrier configured to be disposed in a cavity and a fixation mechanism disposed on the carrier and configured to at least partially support the carrier in the cavity. The fixation mechanism defines an opening for receiving an expandable material. The fixation mechanism has an anti-return device configured to prevent at least a portion of the expandable material from escaping through the opening during expansion. A method includes inserting the carrier into the cavity, injecting the expandable material into the cavity via the opening in the fixation mechanism, expanding the expandable material within the cavity, and preventing at least a portion of the expandable material from escaping through the opening during expansion.

A thermally expandable preparation pumpable at application temperatures in the range of 50 to 120° C., is provided containing: at least one polymer selected from binary copolymers containing at least one monomer unit selected from vinyl acetate, (meth)acrylic acids, styrene and derivatives thereof, and terpolymers based on at least one first monomer selected from the monounsaturated or polyunsaturated hydrocarbons, and at least one second monomer selected from (meth)acrylic acids and derivatives thereof, and at least one third monomer selected from epoxy-functionalized (meth)acrylates, as well as combinations of the first two; at least one liquid polymer selected from liquid hydrocarbon resins, liquid polyolefins and liquid polymers based on one or more diene monomers; at least one peroxide; at least one thermally activatable blowing agent; and at least one adhesion promoter; as well as methods to stiffen/reinforce or seal structural components by application of the preparation.

A composite article having an elastomeric composition with a blowing agent having an activation temperature and providing at least one structural member defining a fixed gap. The composition is formed below the blowing agent's activation temperature into a solid elastomeric member approximately the thickness of or larger than the gap. The elastomeric member is assembled into the gap, which may place the elastomeric member in a state of compression in the gap. The elastomeric member is then expanded by heating it above the activation temperature. During expansion, the escape of the gas produced is limited to increase the state of compression of the elastomer in the gap by means of confining any free surfaces or by including a platy filler such as nanoclay in the composition.

A structural reinforcement for an article including a carrier (10) that includes: (i) a mass of polymeric material (12) having an outer surface; and (ii) at least one fibrous composite Insert (14) or overlay (980) having an outer surface and including at least one elongated fiber arrangement (e.g., having a plurality of ordered fibers). The fibrous Insert (14) or overlay (980) is envisioned to adjoin the mass of the polymeric material in a predetermined location for carrying a predetermined load that Is subjected upon the predetermined location (thereby effectively providing localized reinforcement to that predetermined location). The fibrous insert (14) or overlay (980) and the mass of polymeric material (12) are of compatible materials, structures or both, for allowing the fibrous insert or overlay to be at least partially joined to the mass of the polymeric material. Disposed upon at least a portion of the carrier (10) may be a mass of activatable material (126). The fibrous insert (14) or overlay (980) may include a polymeric matrix that includes a thermoplastic epoxy.

An article comprising: (a) a carrier having a predetermined shape to guide one or more expansion directions of an injection molded expandable material; (b) the injection molded expandable material on the carrier; wherein the expandable material is formed on the carrier at one or more angles perpendicular to the one or more expansion directions; and wherein the expandable material is capable of being activated to expand under an activation condition to come into contact with, and adhere to one or more walls defining a cavity in order to at least partially fill the cavity.

The invention relates to a method for foaming chipboard with tubes including a board body interspersed by tubes and having an upper and a lower face includes the steps of providing a corresponding chipboard with tubes, defining one or more machining regions on the upper and/or lower face of the chipboard with tubes, machining the machining regions.

In order to provide a method for foaming chipboard with tubes and a chipboard with tubes having foamed tubes that can be used in a simple, flexible, and cost-effective manner while also being highly robust, a foam-forming material is introduced at least in portions of at least one of the above-mentioned tubes in the machining region in order to locally reduce the difference in density between the tubes and the board body. The invention further relates to the use of a device for foaming tubes of a chipboard with tubes.

The present invention contemplates a method of forming a member comprising injection molding a first layer into a first tool cavity, overmolding a second layer into a second tool cavity selected from the group consisting of an expandable layer, a sealing layer, an acoustic layer, and adhesive layer, a reinforcement layer, a fastening layer, a second carrier layer, and any combination thereof, overmolding a third layer into the second tool cavity selected from the group consisting of an expandable layer, a sealing layer, an acoustic layer, an adhesive layer, a reinforcement layer, a fastening layer, a second carrier layer, and any combination thereof. The first layer, the second layer, and the third layer may be molded in one injection molding tool and the second and third layer may be segregated from one another prior to any overmolding steps.