摘要:
A connection between two parts (1, 2) of laminar, elastic, plastic foam comprises a gluing (5) in the region of the butt joint (6) between the narrow surfaces (3, 4) of the parts (1, 2) and longitudinal, elastic covering strips (7), which are fixed on one or both of the large surfaces (9) of the parts (1, 2) and, in particular, are fastened by gluing (8) and which cover the butt joint (6).
摘要:
An article having an integrated structure comprising a first portion (2, 11, 21, 31, 41, 52, 61, 81, 101, 111, 122) made of composite material to which is coupled at least one second portion (3, 14, 22, 23, 32, 42, 43, 53, 64, 82, 102, 112, 123) made of thermoplastic or elastomer material injection moulded or cast onto the first portion. Between the first and the second portion there is placed a polymer film (4, 14, 24, 34, 44, 54, 68, 83, 104, 113, 125), compatible with the materials of the said first and second portions to improve the bond between the said portions. The process for the production of such an article is also described.
摘要:
A patterned roller (120) including one or more patterned rings (114) forming an overall cylindrical pattern. The patterned roller (120) may also include one or more spacer rings (214) to form grooves or channels into a surface. The patterned roller may be included in a roller stack (104) as part of a manufacturing system for patterned film (102). The patterned roller (120) can include a pattern to form full corner cubes of many different sizes and/or geometries in a continuous manner across the width and along the length of a reflective sheet without seams. Methods of manufacture include rolling the cylindrical pattern of the patterned roller (120) into a surface of an extruded sheet (102). Articles are manufactured utilizing the methods of manufacture including license plates, shoes, highway signs, articles of clothing, pavement markers, automobile reflectors, and bicycle reflectors.
摘要:
A machine for injection-molding of soles, technical articles and the like, of the type that comprises a footing (11) that supports a plurality of presses with a vertical closure motion (12) provided with mold holders (13) for supporting corresponding molds (14) that are fed by at least one injection assembly (15). The injection assembly (15) is arranged in an upper region in order to inject substantially in a vertical direction, elements (16, 30) for mutual relative motion between the injection assembly (15) and at least portions of the molds (14) being provided.
摘要:
A method for the production of a toe cap (2) for a safety shoe comprises placing a fibrous pellet material of a long fiber-reinforced thermoplastic resin in a pseudo-forming mold (11a), compressing the fibrous pellet material therein under application of heat to primarily form a pseudo-toe cap (1), setting the resultant pseudo-toe cap in position in a mold (11b) for forming a toe cap for a safety shoe, and applying pressure and heat to the pseudo-toe cap to compression mold a toe cap for a safety shoe. By this method, there is obtained the toe cap (2) made of a long fiber-reinforced thermoplastic resin in which the proportion of the content of reinforcing fibers in a skirt part (4) to that in a main body part is in the range of 70 to 100%.
摘要:
Um bei hohen Produktionsgeschwindigkeiten ein mehrlagiges, gewebeartiges Produkt mit hoher Qualität der Verbindungsstellen herzustellen, schlägt die Erfindung ein Verfahren zum Herstellen mehrlagiger Produkte vor, wobei mindestens zwei Stofflagen (16), von welchen mindestens eine Stofflage einen thermoplastischen Materialanteil aufweist, fortlaufend einer Ultraschall-Arbeitsstation (6) zugeführt werden, an welcher ein Ambosselement (22) rotierend gegenüber einer Ultraschall-Sonotrode (7) angetrieben wird, und die Stofflagen (16) in einem Arbeitsschritt gleichzeitig durch Ultraschallschweißen miteinander verbunden werden und die Schweißstelle zu einer Solltrennstelle (33) geschwächt wird. Ferner wird eine entsprechende Vorrichtung vorgeschlagen. Erfindungsgemäß kann ein mehrlagiges Produkt aus mindestens zwei Stofflagen (16) hergestellt werden, von den wenigstens eine Stofflage einen thermoplastischen Materialanteil aufweist, wobei die Stofflagen an wenigstens einer Stelle des Produkts über eine Ultraschall-Schweißstelle stoffschlüssig miteinander verbunden sind und die Ultraschall-Schweißstelle gleichzeitig als Teil einer durch Ultraschallschweißen erzeugte Solltrennstelle (33) ausgebildet ist, welche in Folge ihres anschließenden Durchtrennens eine Seitenkante des mehrlagigen Produkts bildet.
摘要:
A molding material comprising a reinforcing fiber 1 bundle evenly sheathed by a resin layer 2 and having an oblong shape with at least two lengthwise faces that are flat faces 3; and a method involving thermal preforming of a given amount of the molding material and placing the preformed material into a mold for molding through application of heat and pressure, affording lightweight high-strength molded articles, such as safety shoe toe caps, in high yield.
摘要:
A process for the recovery of polyurethane (1) intended to make up for the loss of the product in plants or installations which employ polyurethane as raw material, which comprises selecting the material for separation of colours, removing foreign elements, washing said material, cutting it up and having it mixed with unused material in a proportion of 10% to 25% by weight of the cut material, and compressing and heating it to between 140 and 160°C.