A hollow extrusion-molded body includes a resin composition that contains a base resin composed of an ethylene-ethyl acrylate copolymer or an ethylene-ethyl acrylate copolymer and a linear low-density polyethylene, a brominated flame retardant, antimony trioxide, and magnesium hydroxide having an average particle size of 0.5 m to 3.0 m. In the hollow extrusion-molded body, a composition ratio of the ethylene-ethyl acrylate copolymer to the linear low-density polyethylene, a content of the brominated flame retardant, a content of the antimony trioxide, and a content of the magnesium hydroxide are within specific ranges.

A vehicle headrest includes an electro-acoustic transducer and an acoustic enclosure that supports the electro-acoustic transducer. A unitary foam member is coupled to the acoustic enclosure. The foam member has regions of contrasting firmness including a first region having a first firmness and a second region having a second firmness that is greater than the first firmness. The second region defines a speaker grille that is configured to overlie the electro-acoustic transducer.

The invention relates to a process for producing rigid polyurethane (PUR) and polyurethane/polyisocyanurate (PUR/PIR) foams, comprising the steps of i) producing a reaction mixture containing the components A) an isocyanate-reactive component, B) a polyisocyanate component, and C) a blowing agent, and ii) applying the reaction mixture by using a system comprising at least one casting device. The casting device (100) having: a supply port (12) for feeding the reaction mixture (10), at least one discharge gap (13) extending in a transverse direction (Q) for the discharge of the reaction mixture (10), two gap-forming plates (14) arranged opposite one another, a gap space (15) extending between the gap-forming plates (14) above the discharge gap (13) in a height direction (H), wherein the reaction mixture can be introduced into the gap space (15), distributed over the length of the supply duct (16).

Disclosed is a flame-retardant HIPS material and a preparation method thereof, comprising the following components: 90 parts to 67 parts of a HIPS resin; 8 parts to 15 parts of a brominated flame retardant; and 3 parts to 7 parts of an auxiliary flame retardant; wherein the auxiliary flame retardant is a 1,3,5-triazine compound. In the present invention, a synergistic compounding of the brominated flame retardant and the auxiliary flame retardant effectively reduces an amount of the brominated flame retardant, and a stable UL 94 (1.5 mm) V-0 flame-retardant class can be achieved. Compared with the existing brominated flame-retardant HIPS, the present invention has a low halogen content, low gas, and high cost performance ratio, which avoids excessive acid gas from forming air lines on the surface of parts, has a good appearance.

This invention relates to a fireproofing article and the method of manufacturing the same. The fireproofing article comprises an external portion and an inner portion. The external portion defines external surfaces of the fireproofing article that are exposed to the environment. The inner portion is formed inside of the external portion. The external portion and the inner portion are both porous and made of a fireproofing material. The external portion has a first material density and the inner portion has a second material density. The first material density is less than the second material density. The method of manufacturing a fireproofing article comprises forming the fireproofing article with a fireproofing material through 3D printing; wherein the fireproofing article formed is porous.

A covering material includes: a resin component containing at least one of a crosslinkable resin having photo crosslinkability and thermal crosslinkability and a crosslinkable monomer having photo crosslinkability and thermal crosslinkability; a photoinitiator; and a thermal initiator. A cable includes a core and the covering material that covers the core. A method of manufacturing a cable includes covering a core with a covering material and crosslinking the covering material, wherein the covering material includes: a resin component containing at least one of a crosslinkable resin having photo crosslinkability and thermal crosslinkability and a crosslinkable monomer having photo crosslinkability and thermal crosslinkability; a photoinitiator; and a thermal initiator.

To provide a resin composition having large light transmittance and capable of providing a molded article which is highly laser-weldable to an absorbing resin member, as well as a kit, a method for manufacturing the resin composition, a method for manufacturing a formed article, and a formed article. The resin composition contains a polyamide resin, a maleic anhydride-modified polyphenylene ether-based resin, a phosphazene-based flame retardant, a zinc metal oxide, and a light transmitting dye.

A foamable, insulating-layer-forming multi-component composition contains alkoxysilane-functional polymer, insulating-layer-forming fire-protection additive, blowing-agent mixture, cross-linking agent, and a flame-protection agent that is miscible in water or another compound that is miscible in water. The individual ingredients of the blowing-agent mixture are separated from one another to ensure inhibition of reaction prior to use of the composition, and the cross-linking agent is separated from the alkoxysilane-functional polymer to ensure inhibition of reaction prior to use of the composition. The foamable, insulating-layer-forming multi-component composition can be used as a foam-in-place foam or for production of molded blocks.

A process for making an article by additive manufacture having resistance to dripping when burned comprising (1) depositing a multitude of thermoplastic monofilament strands using a fused deposition modeling apparatus in a pattern and (2) fusing the multitude of strands together to make an article of manufacture having voids therein; wherein the article of additive manufacture has (a) at least 50% of the monofilament strands oriented within 45 degrees of the long part of the axis; (b) the multitude of strands is greater than 10; (c) having a specific micro structure; and (d) is made from a thermoplastic polymer composition that is either the combination of a thermoplastic polymer with a flame retardant compound, a thermoplastic resin having flame resistant properties, or a combination of a thermoplastic resin having flame resistant properties with a flame retardant compound.

A core for a fire rated door includes a fire resistant center panel and an extruded fire resistant border. The fire resistant center panel has a bottom, a top, a first side, a second side, a first end and a second end. The fire resistant center panel is made of a first fire resistant material. The extruded fire resistant border is attached to the first side, the second side, the first end and the second end of the fire resistant center panel. The extruded fire resistant border is made of a second fire resistant material having a higher density than the first fire resistant material.