B29K2105/0094

PREPREG CONTINUOUS PRODUCTION DEVICE AND METHOD THEREFOR

Produce prepreg with a matrix resin adhering to the cloth. Arranging a release sheet on each surface of the cloth; passing the cloth and a pair of the release sheets through a gap portion positioned in a clearance of a pair of heating rollers to be overlaid on each other and supplying the matrix resin to be accumulated above the gap portion of the heating rollers and between the pair of release sheets; and adjusting an interval of the pair of heating rollers to thereby control an adhesion amount of the matrix resin.

MULTILAYER TUBULAR MOLDED BODY AND METHOD FOR PRODUCING MULTILAYER TUBULAR MOLDED BODY
20230250900 · 2023-08-10 ·

To provide a multilayer tubular molded body, which has high chemical resistance and heat resistance and excellent adhesive strength, and a method for producing the same, a multilayer tubular molded body 1 has an inner layer 2 containing a polyolefin as a main component, an outer layer 3 containing polyvinyl chloride as a main component, and an interlayer 4, which is provided between the inner layer 2 and the outer layer 3, has a function to attach the inner layer 2 and the outer layer 3, and contains a first polyolefin having an aromatic ring on a side chain and a second polyolefin having an ester containing group on a side chain.

POLYESTER FILM AND PREPARATION METHOD THEREFOR
20220119637 · 2022-04-21 ·

The present disclosure relates to a polyester film and a preparation method of the same. Since the polyester film includes a resin layer formed from a polyester resin including a first diol moiety derived from isosorbide and a second diol moiety derived from cyclohexanedimethanol in a controlled ratio on at least one surface of a base layer, it is possible to exhibit excellent heat resistance and adhesion.

MANUFACTURE OF THREE DIMENSIONAL OBJECTS FROM THERMOSETS
20230302733 · 2023-09-28 ·

Provided herein is a method for creating a three dimensional (3D) object from reactive components that form a thermoset product. In one embodiment, a method includes providing first and second reactive components that are effective to form the thermoset product. In one embodiment, the thermoset product includes a urethane and/or urea-containing polymer. In one embodiment, the first reactive component includes an isocyanate and the second reactive component includes a polyol having at least one terminal hydroxyl group, a polyamine having at least one amine that includes an isocyanate reactive hydrogen, or a combination of the polyol and the polyamine. In one embodiment, the first reactive component includes a prepolymer, and optionally the ratio of viscosity of the first and second reactive components is from 1:3 to 3:1. Also provided is a 3D object that includes a completely reacted thermoset product, and a thermoset system that includes a first and a second reactive component.

METHOD TO PRODUCE FUNCTIONALIZED ETHYLENE-BASED POLYMERS
20210363281 · 2021-11-25 ·

A process to form a “functionalized ethylene-based polymer” from a first composition comprising an ethylene-based polymer and at least one polar compound, and at least one peroxide, said process comprising at least the following: a) thermally treating the first composition, in at least one extruder comprising at least one barrel, to form the functionalized ethylene-based polymer; b) extruding the functionalized ethylene-based polymer, in melt form, to form an extrudate; c) cooling the extrudate; and d) pelletizing the extrudate; and wherein the “efficiency of the peroxide consumption, after the thermal treatment, is ≥91 wt % within the at least one extruder; and wherein the “normalized feed rate” at which the process is nm is ≥0.0018 (lbs/hr)/(mm).sup.3; and wherein, for step c), after the extrudate exits the extruder, and before the extrudate is pelletized, the extrudate is cooled in a cooling medium to a pelletization temperature, T.sub.pel in ° C.), ≤ the crystallization temperature T.sub.c (in ° C.) of the functionalized ethylene-based polymer.

MULTILAYER POLYPROYLENE FILM

Multilayer film comprising at least a skin layer, a core layer and an inner layer, the skin layer comprising a homo polypropylene or a random propylene ethylene copolymer including up to 2.5 wt.-% units derived from ethylene, the homopolypropylene or the random propylene ethylene copolymer having a MFR2 (ISO1 133, 230° C.) of 2.0 to 20 g/10 min and a melting temperature (Tm) of above 148° C. measured by DSC according to ISO 11357-3:1999 and a scan rate of 10° C./min; the core layer comprising a mixture obtainable by melt blending 20 to 100 wt.-% of a random heterophasic copolymer and 0 to 80 wt.-% of styrene based TPE, whereby the random heterophasic copolymer has a melting temperature (Tm) of 134° C.-148° C. measured by DSC according to ISO 11357-3:1999 and a scan rate of 10° C./min and includes a propylene ethylene copolymer rubber; and whereby the styrene based TPE has a styrene content of from 5 to 20 wt.-%, and the inner layer comprising a random propylene ethylene copolymer having a melting temperature (Tm) from 132° C. to 144° C. measured by DSC according to ISO 11357-3:1999 and a scan rate of 10° C./min, wherein the multilayer film is free of phthalic acid esters as well as decomposition products thereof.

Additive processing of fluoropolymers

Provided are methods for making shaped fluoropolymer by additive processing using a polymerizable binder. Also are 3D printable compositions for making shaped fluoropolymer articles and articles comprising a shaped fluoropolymer.

Methacrylic resin composition for non-contact hot plate welding, molded article, and method for producing same

The present invention provides a methacrylic resin composition for non-contact hot plate welding comprising a methacrylic resin comprising 80 to 99.9% by mass of a methacrylic acid ester monomer unit and 0.1 to 20% by mass of a unit of at least one additional vinyl monomer copolymerizable with the methacrylic acid ester monomer, wherein the methacrylic resin composition has a melt flow rate (MFR) of 2.5 g/10 min or lower at 230° C. at a load of 3.8 kg.

Additive processing of fluoropolymers

Provided are method of producing a shaped fluoropolymer articles. The methods include subjecting a composition comprising a fluoropolymer to additive processing in an additive processing device. Also provided are articles obtained with the methods and 3D-printable compositions.

POLYOLEFIN COMPOSITION WITH IMPROVED BALANCE OF PROPERTIES
20210355308 · 2021-11-18 ·

The present invention is directed to a polyolefin composition comprising a blend of a heterophasic polypropylene composition and 5.0 to 30.0 wt % of an ethylene homo- or copolymer, the ethylene homo- or copolymer having a density of at least 941 kg/m.sup.3 and a melt flow rate MFR.sub.21 of 1 to 10 g/10 min. The heterophasic polypropylene composition comprises a propylene homopolymer or a propylene ethylene random copolymer and an elastomeric ethylene propylene rubber, and is characterized by 75.0 to 95.0 wt % of a crystalline fraction having an ethylene content of up to 4.0 wt % and an MFR.sub.2 of 0.1 to 100 g/10 min, and 5.0 to 25.0 wt % of a soluble fraction having an ethylene content of 10.0 to 70.0 wt % and an intrinsic viscosity of 1.0 to 4.0 dl/kg, wherein the crystalline fraction and the soluble fraction are determined in 1,2,4-trichlorobenzene at 40° C.