Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Reexamination Certificate
2005-07-19
2005-07-19
Miggins, Michael C. (Department: 1772)
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
C428S411100, C428S413000, C428S464000, C428S535000, C428S537500
Reexamination Certificate
active
06919135
ABSTRACT:
A paper container is produced that has gas barrier properties, by employing a laminate having at least a (I) paper layer101,a (II) gas barrier layer103,and an (III) epoxy-group-containing resin composition layer104.The (III) epoxy-group-containing resin composition layer consists of a resin composition that contains a polyolefin (a) having a melt flow rate of 0.1˜100 g/min and an epoxy-compound (b) which has two or more epoxy groups in the molecule and has a molecular weight of 3000 or less, epoxy-compound (b) being added in an amount of 0.01˜5 parts by weight with respect to 100 parts by weight of polyolefin (a). This (III) epoxy-group-containing resin composition layer has good adhesion with the (II) gas barrier layer, thus a laminate can be produced without employing a dry laminate adhesive agent or an extrusion laminate anchor agent. Accordingly, it is possible to avoid a deterioration in the work environment or an odor remaining in the final product from the use of organic solvents. As a result, a paper container having a good adhesive strength between the layers and superior gas barrier properties can be obtained.
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Japan Polyolefins Co., Ltd.
Miggins Michael C.
Sughrue & Mion, PLLC
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