摘要:
A microtitration plate, having a frame made of a plastic which has a plate with a multiplicity of holes, and a multiplicity of receptacles made of the same plastic which are fixedly connected to the plate at the holes by directly molding them thereto, have a receiving portion protruding from the underside of the plate, and are accessible from the upper surface of the plate through apertures.
摘要:
Method and apparatus for making multilayer injection molded plastic articles. In one embodiment, a relatively thin inner sleeve layer is molded in a first mold cavity on a core, the first mold cavity being heated to maintain an outer surface of the inner sleeve layer at an elevated temperature, and the core and sleeve layer are transferred to a second mold cavity to mold a relatively thick outer layer over the sleeve layer while the outer surface is at the elevated temperature, where the elevated temperature is selected to provide melt adhesion between the inner sleeve and the outer layer during the second molding step. In another embodiment, a method of injection molding is provided in which a first thermoplastic material is used to form a first preform portion having an average percent crystallinity of at least about 30%, and a second thermoplastic material is injection molded to form a second preform portion which remains substantially amorphous.
摘要:
A molded plastic garment hanger constituted from two materials which are fused and mechanically bonded to form a composite hanger. Also disclosed is a method and apparatus for the two-step or co-injection molding of plastic materials for the formation of the plastic garment hanger construction. The plastic garment hanger incorporates an insert consisting of a second plastic material adapted to have indicia, logo or on-slip means molded therein, and which insert may be fused to the hanger structure so as to form a mechanical bond with the first plastic material constituting the basic garment hanger.
摘要:
This invention relates to a process for making a toothbrush comprising making a toothbrush head having at its basal end a first engagement part, then making a toothbrush grip handle from a plastics material by a handle molding process, during the handle molding process forming a second engagement part at the head end of the handle in engagement with the first engagement part, such that the engagement between the first and second engagement parts retains the head and grip handle together, and toothbrushes made by this process.
摘要:
A valve head includes an annular valving plate made of a resilient material and a valve guide including projecting legs with elongated slots designed to couple with fins located on the valve body to provide valve guidance between open and closed positions. The valving plate and valve guide are assembled together by heating them to a sufficient temperature to permit a thin layer of the guide to melt and fuse with the valving plate.
摘要:
A trim component for a vehicle interior configured to provide an opening for deployment of an airbag is disclosed. The component may comprise a weakened substrate and insert to direct deployment of the airbag. The insert may comprise a film formed from a polypropylene composition and may be secured between an airbag chute and the substrate. The film may be bonded to the substrate. The chute may be welded to the film and the substrate. The polypropylene composition may comprise polypropylene, an elastomer and polyethylene. The chute may be formed from a thermoplastic polyolefin material. A weakened portion of the insert and a weakened portion of the substrate may be formed concurrently. Thermoplastic polypropylene material may be injected into a mold at a temperature to form the substrate and melt the film in order to bond the film to the substrate.
摘要:
A method for making a toothbrush including a handle, a head including at least one cleaning element extending therefrom, and a hinge arranged between the head and the handle, said hinge including a joint between the handle and the head of a harder thermoplastic component covered by a softer thermoplastic component is provided, the method including: forming a base body by injection molding of a first thermoplastic material forming one of the handle or the head, and injection molding of a second thermoplastic material for forming the other of the handle or the head to thereby fuse the second thermoplastic material against the first thermoplastic material; placing the base body into a further mold; and injection molding the softer thermoplastic component for covering the joint.
摘要:
An insulated drinking vessel, e.g., a tumbler, and method of making the same is disclosed. The vessel basically comprises a pre-molded inner vessel formed of a plastic material having a sidewall is disposed within a pre-molded outer vessel formed of a plastic material having a sidewall to form a subassembly having an insulating air space between the sidewalls. A ring of plastic material is molded in-situ on top portions of the inner and outer vessels of the subassembly to cause portions of the plastic material of the inner and outer vessels to melt and intermingle with the plastic material of the ring to form a non-superficial homogenous joint. The ring forms the rim or lip of the insulated drinking vessel.
摘要:
The present disclosure is related to a method for producing a cellular panel which includes a cellular structure sandwiched between first and second stiff skins. The method includes the following steps: preparing at least two blocks of cellular material; disposing the two blocks on a base ply of dry fabric, while maintaining a space between the two blocks; folding the base ply around the two blocks so as to envelop the two blocks; filling in the space with a reinforcing ply; covering the base ply with a covering ply, on a side where the reinforcing ply has been introduced; injecting resin to an assembly obtained in the previous step; and curing the assembly.
摘要:
A method for making a toothbrush including a handle, a head including at least one cleaning element extending therefrom, and a hinge arranged between the head and the handle, said hinge including a joint between the handle and the head of a harder thermoplastic component covered by a softer thermoplastic component is provided, the method including: forming a base body by injection molding of a first thermoplastic material forming one of the handle or the head, and injection molding of a second thermoplastic material for forming the other of the handle or the head to thereby fuse the second thermoplastic material against the first thermoplastic material; placing the base body into a further mold; and injection molding the softer thermoplastic component for covering the joint.