摘要:
A multilayer molded article made of a first member having a first core layer and a first skin material laminated on the first core layer, and a second member having a second core layer and a second skin material layer laminated on the second core layer, in which the first member is insert laminated in a part of the surface of the second skin material, and which is beautifully finished at a boundary between the first and second skin materials.
摘要:
A multilayer molded article with good appearance is produced by supplying a skin material and a melt of a thermoplastic resin between unclosed upper and lower molds and simultaneously molding the thermoplastic resin to form a molded article and laminating the skin material on a part of a surface of the molded article by pressing and cooling the thermoplastic resin in the molds, in which the lower mold has a protruding part at a position where an edge of the skin material is located, the upper mold has a depressed part at a position corresponding to the protruding part of the lower mold, and, during molding, the edge of the skin material is fixed to the lower mold by sucking it through a gap which opens at the root of the protruding part.
摘要:
A hollow molded article is produced by supplying a molten resin between a pair of a fixed mold and a movable mold before the fixed mold and the movable mold are closed, inserting at least one gas-supplying pin which is provided on a surface of the fixed mold to form a hollow part in a part of the resin and supplying pressurized gas through said gas-supplying pin before the mold closing is finished, closing the movable mold to fill the resin in a cavity formed by the molds, slightly opening the molds while pressurizing a gas in the resin to expand the hollow part and opening the movable mold to remove a hollow molded article from the molds.
摘要:
A molded article of a thermoplastic resin with good apperance which may have a skin material is produced by providing upper and lower molds having a product part-molding section and a non-product part-molding section, supplying a melt of a thermoplastic resin in a cavity of the molds or a space between the skin material and either one of the upper and lower molds through a resin melt passage which is formed in a wall of one of the molds and has an opening for supplying the melt in the non-product part-molding section when a clearance of the cavity is larger than a thickness of a finally produced article, closing the molds to effect press molding, cooling the molds.
摘要:
A fiber reinforced thermoplastic resin shaped article is prepared by supplying a preheated fiber reinforced thermoplastic resin sheet between upper and lower molds, positioning the upper and lower molds so that a clearance between the upper and lower molds at the time of the completion of mold clamping is larger than a thickness of the unpreheated fiber reinforced thermoplastic resin sheet, and supplying a molten thermoplastic resin in a recess provided in at least one of the upper and lower molds through a resin passage provided in the mold so that a portion formed from the molten thermoplastic resin in the recess is integrated by fusion with a portion formed from the fiber reinforced thermoplastic resin sheet. The article is light-weight and also has a rib, a boss or any other projection.
摘要:
A method for molding a foamed particle of a polypropylene resin. The polypropylene resin includes a homopolymer and copolymer of polypropylene resin, as well as a mixture of a polypropylene resin and another resin.
摘要:
A mold for compression molding a resin article, which mold consists of male and female molds, wherein, at the time of complete mold closing, the length L in a mold closing direction of a mated part formed between the outermost wall of said male mold and the innermost wall of said female mold satisfies the equation: (t1−t0+10)mm≧L≧(t1−t0)mm wherein t1 is a distance (mm) between the male and female molds when the resin melt first reaches the mating outermost edge of the male mold, and t0 is a distance (mm) in the mold closing direction between the same points on the male and female molds as those used for measuring t1 when the mold closing is complete, and the horizontal distance of a mating gap between the outermost wall surface of said male mold and the innermost wall surface of said female mold is from 0.02 to 0.1 mm, with which mold, squeeze-out of a resin melt during molding is prevented.
摘要:
A manufacturing device for multi-layer molded-products, which is provided with: a mold having a pair of upper and lower molds, one of which is a movable mold and the other is a fixed mold; and a movable member that presses a covering material against the molding surface of the upper or lower mold and that is capable of retreating out of the cavity of the mold. The device can be used in a manufacturing method for multi-layer molded-products which comprising the steps of supplying molten thermoplastic resin between the upper mold and the lower mold, and applying pressure to a forming cavity by clamping. With this method and device, it is possible to easily produce a multi-layer molded-product wherein the covering material, such as a woven fabric, is entangledly fused to and integrally formed on the surface of a base plate with at least one hole that is made of thermoplastic resin.
摘要:
A multilayer molded article having good appearance is produced by providing a preheated fiber-reinforced resin sheet between a pair of upper and lower molds, and supplying a thermoplastic resin melt and optionally a foam sheet between the upper mold and the fiber-reinforced resin sheet. The thermoplastic resin melt is supplied through a resin supplying opening provided in the lower mold, and through a hole made in the fiber-reinforced resin sheet and the foam sheet. During the supply of the resin melt or as soon as the resin supply is finished, the molds are closed to further flow, and the resin melt is formed to produce a mu molded article made of the fiber-reinforced resin sheet, a skin layer of the thermoplastic resin and optionally the foam sheet therebetween.
摘要:
A method for molding a foamed particle of a polypropylene resin. The polypropylene resin includes a homopolymer and copolymer of polypropylene resin, as well as a mixture of a polypropylene resin and another resin.