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As an innovator in the plastics market, your ideas, research and technology development matter not only to your business, but also to the greater plastics industry. It is important to share this knowledge with your peers, and likewise learn about what others are doing with respect to competitive technology in the plastics industry, and beyond.
We hope to promote this technology awareness by sharing some of the types of inventions that have been patented recently in the industry. The following are recent patents relating to plastics, plastics mold processing and injection molding:
Method for fast manufacturing and assembling of hot runner systems
U.S. Patent No. 7,565,221
Mold-Masters Limited (Georgetown, Ontario, CA)
This patent relates to a computer implemented injection molding configuring subsystem which enables a customer to interactively specify and design a system using a mix of parameters that the customer specifies and are manufacturing process determined. The configuring subsystem may be connected to the Internet. The method and apparatus of the present invention further includes a computerized business and processing subsystem which automatically provides a cost and schedule for the system, and processes an order for the system. The processing subsystem automatically processes the customer's inputs and generates drawings for the configured system.
Dual material injection mold and method
U.S. Patent No. 7,559,763
Crest Mold Technology Inc. (CA)
This patent concerns a two-shot injection molding assembly such that the tooling that creates the mold for the first material can be retracted and the tooling that creates the mold for the second material can be inserted. The first material tool blocks the mold area that is intended for the second material to be injected. After the first material is injected into the mold, the first material tool can be retracted and replaced with the second material tool. The second material tool creates a side for the mold that is used to form the second material injected into the mold, and a spring based wedge forms the other side of the mold.
Fluoroplastic silicone vulcanizates
U.S. Patent No. 7,547,742
Dow Corning Corporation (Midland, MI)
The patent covers fluoroplastics containing fluorocarbon resins and silicones that are prepared by mixing a fluorocarbon resin with a compatibilizer, then adding a curable organopolysiloxane with a radical initiator, and vulcanizing the organopolysiloxane in the mixture. The fluoroplastics can be processed by various techniques, such as extrusion, vacuum forming, injection molding, blow molding or compression molding, to fabricate plastic parts. The resulting fabricated parts can be re-processed (recycled) with little or no degradation of mechanical properties.
Method for modifying existing mold systems to utilize an in-mold apparatus
U.S. Patent No. 7,547,404
OMNOVA Solutions Inc. (Fairlawn, OH)
The patent discloses a method of modifying an existing injection molding system so that the system can coat the surface of an article while it remains in the mold. The method includes modifying an injection molding system to communicate with the dispensing system. The modification can include a nozzle to inject and direct the coating composition onto the surface(s) of the molded article.
Polycarbonate copolymer and process for producing the same
U.S. Patent No. 7,541,416
Mitsubishi Gas Chemical Company, Inc. (Tokyo, JP)
This patent covers a polycarbonate copolymer which comprises 30 to 70 mol % of a structural unit comprising a bisphenyl fluorene structure and 70 to 30 mol % of a structural unit comprising tricyclo [5.2.1.0.sup.2.6] decanedimethanol and causes little occurrence of a birefringence even when extruded, injection molded or stretch processed.
Method of indicating an open/close state of a check valve of an injection molding machine
U.S. Patent No. 7,556,753
Fanuc Ltd (Yamanashi, JP)
Inventors: Uchiyama; Tatsuhiro (Minamitsuru-gun, Yamanashi, JP), Takatsugi; Satoshi (Minamitsuru-gun, Yamanashi, JP), Saito; Osamu (Minamitsuru-gun, Yamanashi, JP), Maruyama; Junpei (Minamitsuru-gun, Yamanashi, JP)
This patent relates to a method of indicating an open/close state of a check valve of an injection molding machine simply and more accurately. The method detects screw rotational force during injection and displays changes in detected rotational force in wave form. The open/close state of the check valve can be indicated based on the waveform pattern because the screw rotational force waveform pattern changes when the check valve closes.
To learn more about these and other patents, and for more information about SZD’s patent services and capabilities, please contact:
Roger A. Gilcrest | Intellectual Property | Gray Matter Matters®
Schottenstein Zox & Dunn Co., LPA
250 West Street
Columbus, Ohio 43215
p 614.462.1055
f 614.222.3437
rgilcrest@szd.com
www.szd.com
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