A method of joining overlapping thermoplastic roofing membrane components in which a first thermoplastic roofing membrane component and a second roofing membrane component are positioned in overlapping relationship between a pair of complementary molding surfaces. Heat is generated in a metal substrate and transferred by thermal conduction from the metal substrate to overlapping portions of the first and second thermoplastic roofing membrane components to locally melt and coalesce a portion or more of the thermoplastic material of the first thermoplastic roofing membrane component and a portion or more of the thermoplastic material of the second thermoplastic roofing membrane component. The molten thermoplastic material of the first and second thermoplastic roofing membrane components forms a zone of coalesced thermoplastic material that, upon cooling, forms a solid weld joint.

A plastic container includes a hollow body portion including a lower supporting base portion; a sidewall portion extending upwardly from the base portion; and a neck portion extending upwardly from the sidewall portion. The neck portion includes a support flange having an upper and lower surface, at least one thread, and a dispensing opening at the top of the neck portion. In embodiments, a closure may be provided to form an assembly. A preform and method for making a container are also disclosed.

A method for manufacturing a closure constructed to be inserted and securely retained in a neck of a product-retaining container includes intimately combining a plurality of coated particles (each comprising a cork material core and a first plastic material) with a second plastic material, and other optional constituents; heating the composition to form a melt; extruding or molding a closure precursor from the melt; and optionally cutting and/or finishing the closure precursor. A composition for use in manufacturing a closure includes a plurality of coated particles (each comprising a cork material core and a first plastic material) with a second plastic material, and one or more blowing agents. Methods for producing particulate material, cork composite material, and additional method for producing closures are also provided.

Provided is a multilayer container including a polyester layer containing a polyester resin (X), and a polyamide layer containing a polyamide resin (Y), a yellowing inhibitor (A), and an oxidation accelerator (B). The content of the polyamide resin (Y) is from 0.05 to 7.0 mass% relative to the total amount of all polyamide layers and all polyester layers. The yellowing inhibitor (A) is a dye, and the content of the yellowing inhibitor (A) is from 1 to 30 ppm relative to the total amount of all polyamide layers and all polyester layers.

High-frequency welding method for welding an accessory to a substrate by high-frequency welding machinery which includes a female mold, having a cavity formed by a profile having substantially the same shape and dimensions as the accessory, and a male mold, having a relief formed by a profile having substantially the same shape and dimensions as the accessory. The method includes: mounting the female mold on a movable upper plate of the machinery and the male mold on a fixed lower plate of the machinery, or vice versa, such that the profile of the cavity is aligned in a closure direction of the molds with the profile of the relief. The method further includes: positioning the accessory on the relief or in the cavity; positioning the substrate above the accessory; moving the upper plate towards the lower plate; supplying high-frequency welding energy to the upper plate and/or to the lower plate.

High-frequency welding method for welding an accessory to a substrate by high-frequency welding machinery which includes a female mold, having a cavity formed by a profile having substantially the same shape and dimensions as the accessory, and a male mold, having a relief formed by a profile having substantially the same shape and dimensions as the accessory. The method includes: mounting the female mold on a movable upper plate of the machinery and the male mold on a fixed lower plate of the machinery, or vice versa, such that the profile of the cavity is aligned in a closure direction of the molds with the profile of the relief. The method further includes: positioning the accessory on the relief or in the cavity; positioning the substrate above the accessory; moving the upper plate towards the lower plate; supplying high-frequency welding energy to the upper plate and/or to the lower plate.

Described is a kit for moulding containers made of polymeric material, including a fixing base, having a plate-like shape, and a plurality of modules, which can be fixed to the fixing base and configured for defining, together with each other, a mould of a container to be moulded, where the mould has a containment space. The fixing base and the plurality of modules have reciprocal fixing elements for determining a stable and reversible coupling between the fixing base and the plurality of modules. Moreover, the base and/or the modules are designed to be connected to each other according to a plurality of different configurations and combinations in such a way that the mould can adopt a plurality of different shapes and dimensions.

A high modulus composite part is disclosed comprising a polymer resin; and a plurality of high-performance unidirectional glass fibers. The high-performance unidirectional glass fibers have an elastic modulus of at least 89 GPa and a tensile strength of at least 4,000 MPa, according to ASTM D2343-09. The composite part comprises a fiber weight fraction (FWF) of no more than 88% and an elastic modulus of at least 60 GPa, according to ASTM D7205.

Parts made by additive manufacturing are often structural in nature, rather than having functional properties conveyed by a polymer or other component present therein. Printed parts having piezoelectric properties may be formed using compositions comprising a plurality of piezoelectric particles located in a polymer matrix comprising a first polymer material and a sacrificial material that are immiscible with each other. The sacrificial material, which may comprise a second polymer material, may be removable from the first polymer material under specified conditions. The piezoelectric particles may remain substantially non-agglomerated when combined with the polymer matrix. The polymer matrix may be treated to remove the sacrificial material to introduce a plurality of pores. The compositions may have a form factor such as a composite filament, a composite pellet, a composite powder, or a composite paste. Additive manufacturing processes may comprise forming a printed part by depositing the compositions layer-by-layer.

A liquid crystal polyester resin comprising 42 to 80 mol % of structural unit (I) relative to 100 mol % of the total structural unit of the liquid crystal polyester resin, and ΔS (entropy of melting) defined by equation [1] is 0.01×10.sup.−3 to 2.7×10.sup.−3 J/g.Math.K:

ΔS(J/g.Math.K)=ΔHm(J/g)/Tm(K)  [1]

wherein Tm is an endothermic peak temperature determined by: after observation of an endothermic peak temperature (Tm.sub.1) observed when heating a liquid crystal polyester under temperature rising conditions of 20° C./minute from room temperature in differential scanning calorimetry, the liquid crystal polyester was maintained at a temperature of Tm.sub.1+20° C. for 5 minutes, followed by observation of the endothermic peak temperature observed when the temperature has fallen to room temperature under temperature falling conditions of 20° C./minute and then raised under temperature rising conditions of 20° C./minute, and ΔHm is an endothermic peak area of Tm:

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