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Heat-resistant food container, and manufacturing method for same

A food container, heat-resistant technology, used in containers, thermal insulation containers, flexible containers, etc., can solve the problem of not having heat resistance, and achieve the effects of improving crystallinity, reducing manufacturing costs, and improving heat resistance

Active Publication Date: 2014-05-28
NAKAMOTO PAKKUSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, a method of producing a food container sheet using undried recycled PET flakes and the like has been proposed (see Patent Document 4), but this food container sheet does not have heat resistance.

Method used

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  • Heat-resistant food container, and manufacturing method for same
  • Heat-resistant food container, and manufacturing method for same
  • Heat-resistant food container, and manufacturing method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] [Preparation of PET resin material]

[0094] 83 parts by weight of PET resin (manufactured by Unitika "MA-2101M": intrinsic viscosity 0.62dl / g, water content 2,900ppm) and 10 parts by weight of talc MB (Tokyo Ink Co., Ltd. "PEX1470" manufactured by the company: 30% by weight of LPDE + 70% by weight of talc), 1 part by weight of chain extender MB (prototype product of Meisai Chemical Co., Ltd.: 70% by weight of PETG + 30% by weight of ADR4368S manufactured by BASF Japan Co., Ltd.), 4 parts by weight of white pigment MB ("L-9583" manufactured by Dainippon Ink Co., Ltd.: PET50% by weight + 50% by weight of white pigment), 2 parts by weight of compatibilizer ("LOTADER AX8840" manufactured by ARKEMA Co., Ltd., use The mixer mixes well.

[0095] [Manufacturing of laminated sheets]

[0096] Put the PET resin material (for the main layer) into the main extruder ("TEX105α" manufactured by Japan Steel Works Co., Ltd.: L / D=31.5, twin-screw, two vent holes), at an extrusion tempe...

Embodiment 2

[0134] [Manufacturing of laminated sheets]

[0135] As the resin material for the main extruder, 84 parts by weight of PET resin (manufactured by Unitika "MA-2101M"), 1 part by weight of chain extender MB (manufactured by Mingcai Chemical Co., Ltd.), talc MB (Tokyo "PEX1470" manufactured by Ink Co., Ltd.) 10 parts by weight, compatibilizer ("LOTADER AX8840" manufactured by ARKEMA Co., Ltd. 2 parts by weight), black pigment MB (Dainippon Ink Co., Ltd. "BK-250DCT": PET70% + black pigment 30 %) 3 parts by weight of the PET resin material, as the resin material for the sub-extruder, what used was PET resin ("MA-2101M" manufactured by Unitika Corporation), except that, in the same device as in Example 1 A laminated sheet with a total thickness of 330 μm of the main layer (300 μm) / inner layer (30 μm) was produced under the same conditions. In addition, the printed film was not bonded.

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Abstract

Provided is a heat-resistant food container that exhibits high heat resistance up to 250 DEG C and that can be manufactured inexpensively using low-cost standard PET resin, lower-cost PET resin for fibers and recycled PET flakes. The container is obtained by: adding a chain extender, a compatibilizer and talc to PET resin; introducing the same into an extruder (30) having at least 2 vent holes; suctioning / degassing the heated / molten PET resin using a high vacuum of at least -99.99kPa from the vent holes (33, 34), after which a sheet is formed by extrusion; vacuum / pressure forming the sheet using a thermoforming machine; and forming the container by retaining the formed product in a mold at 100-220 DEG C. The combined amount of the crystalline portion and the talc content of the container is at least 25%.

Description

technical field [0001] The present invention relates to a heat-resistant food container, and more specifically, to a heat-resistant food container capable of withstanding a temperature conditioned by heating in a microwave oven, that is, a conditioned temperature of 180 to 250°C. Background technique [0002] In food stores such as convenience stores, department stores, and supermarkets, various foods such as home-cooked dishes, fried foods, noodles, and salads are sold in food containers such as plates, cups, and bowls. For the heat resistance required for these food containers, it is required to be able to withstand the temperature (90 ℃) of microwave oven heating of food with less oil content, and the temperature (150 ℃) of microwave oven heating of food with more oil content, until milk Heat resistance to burnt temperature (180-250°C) such as gratin and doria. As a food container having a heat resistance of 90 to 150°C, a four-layer structure consisting of A, B, C, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D30/00B29C51/10C08K3/34C08L23/08C08L63/00C08L67/02B29K67/00B29L22/00B29C48/21B29C48/28B29C48/49B29C48/76B29C48/92
CPCB29C51/10C08L67/02B29K2867/003B29C51/002B29C51/02B29K2067/003B65D1/22B29K2105/26C08K3/346C08L23/0884C08L25/14B29C48/08B29C48/0017B29C48/21B29C48/0021B29C48/022B29C48/49B29C48/91B29C48/914B29C48/07B29C48/0018B29C48/28B29C48/268B29C48/286B29C48/288B29C48/767B29C48/9135B29C2791/006B29K2105/0005B29K2105/0047B29K2105/0085B29K2105/0088B29L2031/712B65D81/38B29C51/14B29C65/02
Inventor 笹内克郎高冈滋
Owner NAKAMOTO PAKKUSU
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