A metal-resin joined body having a high joining strength is obtained. The metal-resin joined body of the invention is a metal-resin joined body 10 including a metal member 30 made of a metal and a resin member 20 made of a thermoplastic resin, in which a resin joint surface 22 of the resin member 20 is joined to a metal joint surface 32 of the metal member 30. The metal member 30 includes an anchor portion 34 protruding from the metal joint surface 32. The anchor portion 34 includes an aggregate 38 of a plurality of metal particles 36, and a plurality of voids 40 formed between the plurality of metal particles 36. The plurality of voids 40 are connected inside the anchor portion 34 and are connected from a surface of the anchor portion 34 to the inside of the anchor portion 34.

A method of manufacturing a mixture of synthetic resin and weight body material added to increase the weight of the mixture is disclosed. The method includes a first step of introducing synthetic resin and weight body material into the mixer, a second step of mixing the synthetic resin and the weight body material in the mixer, a third step of discharging a fixed amount of the mixture of synthetic resin and weight body material, mixed in the mixer, a fourth step of melting the synthetic resin discharged from the mixer, a fifth step of molding the molten synthetic resin and the weight body material into a finished product using the injector, in which the mold is mounted, and a sixth step of cooling the finished product. The method is configured to perform injection molding using environmentally friendly materials and regenerated energy resources, whereby production time is reduced compared to a conventional mortar injection and extrusion type injection method while improving productivity. In addition, the manufacturing process is simplified, thereby reducing labor costs. Furthermore, the defect rate is reduced, thereby improving quality. Moreover, poorly processed materials are pulverized for reuse, thereby reducing waste treatment costs and the consumption of raw materials and thus improving price competitiveness.

A method and a device for admixing additives into a polymer melt made of non-extracted polyamide 6 are disclosed. The polymer melt is combined in a highly concentrated form with an additional melt flow without additives and mixed therewith. Additionally, a part of the melt is branched off from a main melt flow (3), wherein the sub-melt flow (4) is transported into a dispersing device (5) and is supplied and mixed with one or more additives (12). The side-melt flow (4) with additives is then returned into the main melt flow (3), mixed with the main melt flow, and subsequently supplied for further processing.

A method and a device for admixing additives into a polymer melt made of non-extracted polyamide 6 are disclosed. The polymer melt is combined in a highly concentrated form with an additional melt flow without additives and mixed therewith. Additionally, a part of the melt is branched off from a main melt flow (3), wherein the sub-melt flow (4) is transported into a dispersing device (5) and is supplied and mixed with one or more additives (12). The side-melt flow (4) with additives is then returned into the main melt flow (3), mixed with the main melt flow, and subsequently supplied for further processing.

The present invention relates to articles comprising a plurality of molded hollow parts (11) having different central axis (14, 15) through the hollow elements, further having passages in walls of the hollow parts transverse to the central axis of the hollow parts. The present invention also relates to methods applying two part curable materials to substrates using the molded parts of the invention as mixing elements.

The present invention relates to articles comprising a plurality of molded hollow parts (11) having different central axis (14, 15) through the hollow elements, further having passages in walls of the hollow parts transverse to the central axis of the hollow parts. The present invention also relates to methods applying two part curable materials to substrates using the molded parts of the invention as mixing elements.

The present invention relates to articles comprising a plurality of molded hollow parts (11) having different central axis (14, 15) through the hollow elements, further having passages in walls of the hollow parts transverse to the central axis of the hollow parts. The present invention also relates to methods applying two part curable materials to substrates using the molded parts of the invention as mixing elements.

The present invention relates to articles comprising a plurality of molded hollow parts (11) having different central axis (14, 15) through the hollow elements, further having passages in walls of the hollow parts transverse to the central axis of the hollow parts. The present invention also relates to methods applying two part curable materials to substrates using the molded parts of the invention as mixing elements.

Provided is a polyamide molding composition comprising a) at least one semi-aromatic, semi-crystalline polyamide, at least flat glass fiber as reinforcing filler, c) at least one aliphatic polyamide comprising recurring units complying with the formula NHR.sup.2NHCOR.sup.3CO, wherein R.sup.2 and R.sup.3, equal to or different from each other at each occurrence, are divalent aliphatic hydrocarbon groups, and d) at least one additive.

Provided is a polyamide molding composition comprising a) at least one semi-aromatic, semi-crystalline polyamide, at least flat glass fiber as reinforcing filler, c) at least one aliphatic polyamide comprising recurring units complying with the formula NHR.sup.2NHCOR.sup.3CO, wherein R.sup.2 and R.sup.3, equal to or different from each other at each occurrence, are divalent aliphatic hydrocarbon groups, and d) at least one additive.