Abstract: A multilayer molded article having improved appearance and feeling is produced by wetting a skin material including a fabric or a thermoplastic resin sheet as an outermost layer with at least one liquid material which is water, an aqueous solution, a volatile material which is liquid in an ordinary state, or a solution including the volatile material as a medium, supplying the wet skin material between male and female molds, supplying a thermoplastic resin melt between the molds and closing the molds to form the multilayer molded article including the integrally adhered skin material and the thermoplastic resin.

Abstract: A process for producing 2 press molded laminate including at least two theromplastic resin layers and an ink pattern layer, wherein inner unevenness is provided on the interface of the thermoplastic resin layers tuned with the ink pattern, wherein the unevenness can be viewed through at least one of the surfaces of the press molded laminate. The molded product visually provides stereoscopic appearance due to tuning the inner unevenness with the ink pattern.

Abstract: A method for repairing a hook hole in a piece of plastic bait. The method including the steps of heating a tip, inserting the heated tip into the hook hole in a piece of plastic bait, holding the heated tip in the hook hole for sufficient time to melt the plastic in the marginal edges of the hole, removing the heated tip from the hole, and compressing the plastic bait in the region of the hole to close the hole. The apparatus for repairing the hook hole in a piece of plastic bait including a handle, a tip extending from the handle, the tip sized to be insertable into the hook hole in a piece of plastic bait; and means for heating the tip to a sufficient temperature so that when the tip is inserted in the hook hole in the plastic bait, it melts enough plastic in the marginal regions around the hook hole that the hole can be closed when the tip is removed.

Abstract: A method for making fluid seals with a mold which includes an outside diameter surface on a fixed part and a seal flange support surface on another portion of the fixed part. A seal casing with a shouldered mounting flange having major and minor out side diameters and a radial flange is positioned in the fixed mold part. A movable mold member includes an upper, outer cylindrical surface for engaging the inside surface of the casing major diameter to form a flash barrier which moves during mold closure. Both the fixed mold part and the movable mold part include inwardly directed surfaces defining the mold cavity; the flange support is apertured for the elastomer to flow from the seal body-forming part of the cavity to the gasket-forming part of the cavity. The heel-forming cavity part lies between the lower part of the insides surface of the mold and the outer surface of the casing minor diameter.

Abstract: A climbing step and its manufacturing method. The climbing step which is installed on wall surfaces of a manhole, pier or the like for ascent and descent is arranged such that a part of the step is coated with a layer of synthetic resin, and a reflection plate including protruding portions for preventing slippage are formed in the synthetic resinous surface. The reflection plate is embedded in the resinous surface over the tread portion while causing the surface to be exposed.

Abstract: A method for forming a solid state semiconductor pressure sensor in which the pressure sensor element is protected from the ambient whose pressure is being measured by a combination of a pressure transfer medium and a thin covering membrane. The method includes applying the thin covering membrane so as to substantially avoid entrapment of air or formation of voids in the pressure transfer medium which would degrade the performance of the sensor. The pressure transfer medium is a gel-like material such as a silastic. The membrane is chosen to be substantially impermeable to the ambients being measured and sufficiently flexible to avoid attenuation of the input pressure signal. The membrane is cast in place by applying a thin liquid coating or a heat deformable film over the pressure transfer medium and then coverting it into a thin solid membrane stuck to the pressure transfer medium and the pressure sensor body.

Abstract: A climbing rung for anchoring to the wall of a manhole shaft. The climbing rung has a generally U-shaped core of two parallel legs spaced apart by a central tread. Each leg is sheathed in a pre-formed protective sleeve, closed at one end, by inserting the leg into the mouth of the sleeve. An injection moulded protective coating is bonded to the core of the tread and the core of each leg, extending to proximate the mouth of each pre-formed sleeve when a leg is sheathed therein, forming a sealing interface proximate the annular lip circumferentially defining the mouth of each sleeve. A method includes gripping the climbing rung only proximate the pre-formed protective sleeves when both legs are sheathed therein, so as to permit positioning the core of the tread and legs, extending only to proximate the mouth of each pre-formed protective sleeve, in an injection moulded cavity radially spaced equidistant the surface of the mould cavity.

Abstract: A method of manufacturing a magnetic tape cassette by using a molding die having a fixed part and a second part including a submarine gate and a plurality of movable cores. The method includes the steps of defining an initial opening in the molding die between the fixed part and the movable cores, filling a molten plastic for molding the body of the cassette into the initial opening in the molding die, selectively moving the plurality of cores to change the size of the initial opening to define a new opening connected to the submarine gate, and filling the new opening through the submarine gate with a molten plastic different from the plastic already filled into the initially formed opening in order to mold the body in a plurality of colors.

Abstract: A method for making an end connection for a shaft made of composite material, which accommodates for differences in stiffness, thermal expansion, and chemical resistance between the shaft and the member connected thereto and operates under oscillating torque, thrust, and bending loads, and also provides for manufacturing flexibility in enabling the shaft and connection to be produced as separate parts which are formed when final assembly is to occur. The connection has a male insert which is inserted into the end of the composite shaft. Axial and circumferential grooves are cut in the surfaces of the male insert and the shaft. These grooves are aligned to form circumferential and axial keyways which intersect each other. Material is injected into the keyway and polymerizes to form structural keys which transmit the thrust and torque, while locking the insert member and the shaft permanently together.

Abstract: A flexible link belt is made by injection molding link portions into and through a flexible carrier webbing, whereby the link portions are also bonded to each other through holes in the webbing. The injection mold used for making the links has two mold sections each with a cavity portion corresponding to the respective link portion. The carrier webbing is held in place between the two mold sections. An injection nozzle reaches into one mold portion and a movable core reaches into the other mold portion preferably in such a position that the injection nozzle and the movable core face each other across the flexible webbing. The core distributes the injected plastics material into both mold portions and so that the plastics material must move primarily through the holes or interstices in the webbing.