Patent
Method of coinjection molding of thermoplastic and thermoplastic elastomer
TLDR
Vibration isolators are manufactured by a co-injection molding process as mentioned in this paper, where the outer and inner parts of the isolator are molded first from a rigid or stiff thermoplastic material such as polystyrene and intermediate spring-like parts are made of a thermopolymer such as copolymer of butadiene and styrene formed and bonded to the inner parts in a subsequent molding step.Abstract:
Vibration isolators are manufactured by a co-injection molding process. Outer and inner parts of the isolators are molded first from a rigid or stiff thermoplastic material such as polystyrene and intermediate spring-like parts of the isolators are made of a thermoplastic elastomer such as copolymer of butadiene and styrene formed and bonded to the outer and inner parts in a subsequent molding step.read more
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Patent
Two material frame having dissimilar properties for thermal ink-jet cartridge
TL;DR: In this paper, a thermal ink-jet pen cartridge has a rigid external frame member fabricated of a rigid engineering plastic, and an interior frame structure attached to the external structure, formed of a softer, more ductile plastic material than an engineering plastic.
Patent
Process for producing optical element
Noriyuki Nose,Nakajima Toshiyuki,Eigo Kawakami,Takeshi Baba,Kushibiki Nobuo,Masakazu Matsugu,Niwa Yukichi +6 more
TL;DR: In this article, a process for producing an optical element is described, where an optical molding is formed by using a mold and thereafter released from the mold by supplying a gas to the boundary between the mold surface and the optical mold.
Patent
Composite hypodermic syringe piston
TL;DR: In this article, a composite piston of at least two materials, preferably a rigid material and an elastic material, the materials being chemically fused in a modular mold, and the plunger formed thereby.
Patent
Method and apparatus for molding a closure cap
Charles S Ochs,Carl E Koontz +1 more
TL;DR: In this paper, an improved molded closure cap is described which has a softer sealing portion and a relatively hard closure engaging portion, where the container engaging portion is made of a softer seal-forming plastic and the remaining portion or shell is molded of a harder plastic.
Patent
Article gripping means and method of making same
TL;DR: In this paper, a method of manufacturing a molded plastic garment hanger having a pair of hingedly connected jaws is described, which includes a thin pad of resilient thermoplastic rubber molded to the inner surface of one or both of the garment-gripping jaws.
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Patent
Process for manufacturing a resilient mounting element
TL;DR: In this paper, the outer bushing is made of a resilient plastic having a relatively high tensile strength and modulus of elasticity and has a diameter somewhat smaller than the diameter of the mold cavity.