US 10,105,873 B2 · Mold for manufacturing a food packaging material having uniform coating of oil

Abstract

The present invention relates to a food packaging material for packing food, more particularly to a food packaging material having a uniform coating of oil, a method of manufacturing the same, and a mold for manufacturing the same. The food packaging material includes a plurality of grooves formed on one surface of the food packaging material; and an oil layer uniformly applied to the one surface of the food packaging material, being put into the grooves. According to the present invention, there are provided a food packaging material which continuously maintains a uniform coating of oil and thus minimizes sticking of contents to a surface of the packaging material, a method of manufacturing the same, and a mold for manufacturing the same.

Claims9

Dependent claims

A mold for manufacturing a food packaging material having a uniform coating of oil, the mold comprising:

a first metal layer;
a photoresist layer formed on the first metal layer and including a plurality of photoresist holes disposed at predetermined intervals;
and
a plurality of prism bodies formed on the first metal layer, each including a first portion disposed in the photoresist holes and a second portion protruding from an upper surface of the photoresist layer,
wherein the first portion and the second portion have substantially the same width.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/384,733Filed 20 Dec 2016 · division

Priority

KR 10-2011-009517021 Sep 2011

Published

US 2017/0101257 A113 Apr 2017

Granted

23 Oct 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

B29C 33/424
Characterised by the shape of the moulding surface, e.g. ribs or grooves: moulding surfaces provided with means for marking or patterning
B05D 1/26
Processes for applying liquids or other fluent materials: performed by applying the liquid or other fluent material from an outlet device in…
B29C 33/38
Moulds or cores; Details thereof or accessories therefor: characterised by the material or the manufacturing process
B29C 33/56
Moulds or cores; Details thereof or accessories therefor: coatings , e.g. enameled or galvanised; Releasing, lubricating or separating agents

Family

PCT/KR2011/008064Parent of this division · filed 27 Oct 2011

US 2017/0101257 A1Pre-grant publication · published 13 Apr 2017

Application14/344,215Parent of this division

US 9,555,956 B2Parent of this division

US 2014/0234585 A1Published application

US 10,105,873 B2This patent

From the US filing history. Foreign family members aren’t listed.

Mold for manufacturing a food packaging material having uniform coating of oil

Life of this patent

Mold for manufacturing a food packaging material having uniform coating of oil

Life of this patent

Abstract

Claims9