Radiation crosslinked polyethylene hinge
a technology of cross-linked polyethylene and hinges, which is applied in the direction of liquid dispensing, containers, structural/machine measurement, etc., can solve the problems of radiation cross-linking, radiation cross-linking, radiation cross-linking,
Inactive Publication Date: 2019-11-07
NOVA CHEM (INT) SA
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The crosslinked polyethylene hinges significantly increase the number of opening and closing cycles to break, achieving durability of over 800 cycles, while maintaining flexibility and functionality, and are suitable for various dispensing containers.
Problems solved by technology
Further there is no suggestion to use radiation crosslinking to improve the properties of the hinge.
Further there is no suggestion to use radiation crosslinking to improve the properties of the hinge.
Further there is no suggestion to use radiation crosslinking to improve the properties of the hinge.
Further there is no suggestion to use radiation crosslinking to improve the properties of the hinge.
Interestingly the 813 patent does not teach or suggest using the crosslinked polyethylene in snap tops or living hinges.
Method used
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[0046]Other than in the operating examples or where otherwise indicated, all numbers or expressions referring to quantities of ingredients, reaction conditions, etc. used in the specification and claims are to be understood as modified in all instances by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that can vary depending upon the properties that the present invention desires to obtain. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.
[0047]Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as p...
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Abstract
Polyethylene living hinges used in “snap top” lids for condiments and the like may be electron bean irradiated to partially crosslink the polyethylene to produce a hinge having an improvement in the number of opening and closing cycles until failure of not less than 30%. The irradiated lids may be used in place of polypropylene lids for condiment containers.
Description
REFERENCE TO RELATED APPLICATION[0001]This application is a divisional of U.S. patent application Ser. No. 15 / 123,386 filed Sep. 2, 2016 entitled “RADIATION CROSSLINKED POLYETHYLENE HINGE”, which is a national phase filing of PCT / IB2015 / 050664, filed on Jan. 29, 2015, entitled “RADIATION CROSSLINKED POLYETHYLENE HINGE”, which claims priority to Canadian Patent Application 2844886, filed Mar. 6, 2014, entitled “RADIATION CROSSLINKED POLYETHYLENE HINGE” which are herein incorporated by reference in their entirety.TECHNICAL FIELD[0002]The present invention relates to electron beam cross linked polyethylene hinges for lids for dispensing containers such as condiments, spices, soaps, shampoos, oils and pills. Such hinges need to have a life cycle of at least about 300 openings and closing before failure (e.g. the hinge breaks). In some embodiments the lid snaps shut when gently pushed towards the closed position and stay open when pushed towards the fully opened position. These lids cont...
Claims
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IPC IPC(8): B65D47/08B32B1/02C08L23/08B65D83/20B65D51/04B65D47/06G01M5/00G01N3/36C08J3/24C08J7/12B32B1/00
CPCG01N2203/0044B65D83/206G01N2203/0464B65D47/0809G01N2203/0282B65D47/065B65D47/08B65D51/04C08L2205/025C08L23/0815B32B1/02C08J7/123C08L2312/06C08J2423/08G01N3/36G01N2203/0298C08J2323/08B65D47/0857G01M5/0058G01N2203/0005G01M5/0033C08J3/24G01N2203/0023B65D3/16B32B1/00
InventorRYCROFT, JASONARNOULD, GILBERTBOTROS, MATTHEWMCGRORY, WILLIAM
OwnerNOVA CHEM (INT) SA