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Articles which include a hinged starch-bound cellular matrix    

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United States Patent5843544   
Link to this pagehttp://www.wikipatents.com/5843544.html
Inventor(s)Andersen; Per Just (Santa Barbara, CA); Hodson; Simon K. (Santa Barbara, CA)
AbstractMethods and systems for forming hinged starch-bound matrices. Starch-based compositions are molded between heated molds in order to form a cellular matrix and also to remove the water from the starch-based compositions in order to form a binding matrix of solidified starch. The molding apparatus is configured to form one or more creases within the hinge area in order to define one or more lines upon which the hinge will bend. The molding apparatus is also configured such that the region of the mold corresponding to the inner surface of the hinge area will transfer heat more slowly to the inner hinge surface, resulting in reduced thickness of the skin of the inner hinge. This increases the collapsibility, or ability of the inner surface of the hinge to fold or buckle, during the bending action. This in turn reduces the bending radius of hinge such that the hinging action exerts less strain on the outer surface of the hinge. The inner surface of the hinge may optionally be treated with glycerin or other polyols soften the inner surface. The outer surface of the hinge may optionally be coated with an elastomeric material, such as polyvinyl alcohol, in order to strengthen the outer surface and reduce its tendency to fracture during the hinging action.
   














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Patent Text Patent PDF Print Page Summary File History
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Inventor     Andersen; Per Just (Santa Barbara, CA); Hodson; Simon K. (Santa Barbara, CA)
Owner/Assignee     E. Khashoggi Industries (Santa Barbara, CA)
Patent assignment
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Company News
Publication Date     December 1, 1998
Application Number     08/661,223
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     June 10, 1996
US Classification     428/36.5 16/221 16/277 16/385 206/524.7 206/562 428/36.4 428/158 428/213 428/317.9 428/318.8
Int'l Classification     B32B 005/16 B32B 019/02 B32B 025/02 E05F 001/08
Examiner     McCamish; Marion E.
Assistant Examiner     Copenheaver; Blaine R.
Attorney/Law Firm     Workman, Nydegger & Seeley
Address
Parent Case     RELATED APPLICATIONS The present application is a continuation-in-part of U.S. application Ser. No. 08/192,965, entitled "Hinges for Inorganically Filled Compositions," and filed Feb. 7, 1994 in the names of Per Just Andersen, Ph.D. and Simon K. Hodson now abandoned; and also a continuation-in-part of U.S. application Ser. No. 08/218,967, entitled "Articles of Manufacture Molded from Inorganically Filled Compositions," and filed Mar. 25, 1994 in the names of Per Just Andersen, Ph.D. and Simon K. Hodson which issued as U.S. Pat. No. 5,545,450; and also a continuation-in-part of U.S. application Ser. No. 08/288,664, entitled "Inorganically Filled, Starch-Based Compositions for Manufacturing Containers and Other Articles Having a Thermodynamically Controlled Cellular Matrix," and filed Aug. 9, 1994 in the names of Per Just Andersen, Ph.D. and Simon K. Hodson now allowed; and also a continuation-in-part of U.S. application Ser. No. 08/353,543, entitled "Articles Having a Starch-Bound Cellular Matrix Reinforced With Uniformly Dispersed Fibers," and filed Dec. 9, 1994 in the names of Per Just Andersen, Ph.D. and Simon K. Hodson now allowed; and also a continuation-in-part of U.S. application Ser. No. 08/577,123, entitled "Compositions and Methods for Controlling Operational Windows in the Manufacture of Starch-Bound Cellular Articles," and filed Dec. 22, 1995 in the names of Per Just Andersen, Ph.D., Amitabha Kumar, Ph.D., and Simon K. Hodson still pending. For purposes of disclosure of the present invention, each of the foregoing applications is incorporated herein by specific reference.
Priority Data    
USPTO Field of Search     16/221 16/277 16/385 206/524.7 206/562 428/158 428/108 428/182 428/213 428/317.9 428/339 428/532 428/36.4 428/36.5 428/35.7 428/35.8 428/318.8
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