High-temperature steaming and boiling resistant easily-uncovering substrate film, easily-uncovering film containing substrate film and preparation method thereof

A film substrate, melt temperature technology, applied in chemical instruments and methods, packaging, household packaging, etc., can solve the problems of large order volume, difficult to change formula, cover film can not be opened, etc., to achieve heat sealing stability Good, safe, excellent temperature resistance effect

Pending Publication Date: 2019-08-16
惠州德昉高分子膜材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Or heat seal with HDPE TYVEK. The heat seal strength of the commonly used sealing film on the market increases with the increase of heat sealing temperature. When the container is sealed firmly, the cover film can no longer be opened.
There are also high-temperature cooking and easy-to-remove films made by casting method on the market, which require a large order quantity and it is not easy to change the formula

Method used

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  • High-temperature steaming and boiling resistant easily-uncovering substrate film, easily-uncovering film containing substrate film and preparation method thereof
  • High-temperature steaming and boiling resistant easily-uncovering substrate film, easily-uncovering film containing substrate film and preparation method thereof

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Effect test

Embodiment 1

[0018] An easy-to-peel film substrate film with constant heat-sealing strength and firm sealing sealing, which includes a co-extruded corona layer, an intermediate layer, and a heat-sealing layer in sequence from the outside to the inside, wherein the corona layer material is PP and The blend of metallocene HDPE, the weight ratio of PP and metallocene HDPE is 20:100, and the melt temperature is 200℃. The material of the middle layer is metallocene HDPE with a melt index of 0.5g / 10min and a melt temperature of 200°C. The material of the heat-sealing layer is ethylene propylene butene terpolymer with a melt temperature of 200°C.

[0019] The total thickness of the substrate film in this embodiment is 70 μm, and the thickness ratios of the corona layer, intermediate layer, and heat-sealing layer are: 35%, 55%, and 10%.

[0020] The preparation method of above-mentioned substrate film is:

[0021] Using a three-layer co-extrusion process, the raw material resins corresponding to ...

Embodiment 2

[0024] An easy-to-peel film substrate film with constant heat-sealing strength and firm sealing sealing, which includes a co-extruded corona layer, an intermediate layer, and a heat-sealing layer in sequence from the outside to the inside, wherein the corona layer material is PP and The blend of metallocene HDPE, the weight ratio of PP and metallocene HDPE is 50:100, and the melt temperature is 240℃. The material of the middle layer is metallocene HDPE with a melt index of 1g / 10min and a melt temperature of 240°C. The material of the heat-sealing layer is ethylene propylene butene terpolymer with a melt temperature of 240°C.

[0025] The total thickness of the substrate film in this embodiment is 70 μm, and the thickness ratios of the corona layer, intermediate layer, and heat-sealing layer are: 35%, 50%, and 15%, respectively.

[0026] The preparation method of above-mentioned substrate film is:

[0027] Using a three-layer co-extrusion process, the raw material resins corre...

Embodiment 3

[0029] An easy-to-peel film substrate film with constant heat-sealing strength and firm sealing sealing, which includes a co-extruded corona layer, an intermediate layer, and a heat-sealing layer in sequence from the outside to the inside, wherein the corona layer material is PP and The blend of metallocene HDPE, the weight ratio of PP and metallocene HDPE is 30:100, and the melt temperature is 210℃. The material of the middle layer is metallocene HDPE with a melt index of 0.8g / 10min and a melt temperature of 210°C. The material of the heat-sealing layer is ethylene propylene butene terpolymer with a melt temperature of 210°C.

[0030] The total thickness of the substrate film in this embodiment is 70 μm, and the thicknesses of the corona layer, intermediate layer, and heat-sealing layer are respectively: 35%, 53%, and 12%.

[0031] The preparation method of above-mentioned substrate film is:

[0032] Using a three-layer co-extrusion process, the raw material resins correspon...

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Abstract

The invention belongs to the technical field of packaging materials and specifically relates to an easily-uncovering film. An easily-uncovering substrate film with constant heat sealing strength and with a seal firmly sealed successively comprises a corona layer, an intermediate layer and a heat sealing layer from the outside to the inside that are co-extruded. The material of the corona layer isa blend of PP and metallocene HDPE. The weight ratio of PP to metallocene HDPE is 20-50: 100. The material of the intermediate layer is metallocene HDPE, and the melt index is 0.5-1 g/10 min. The material of the heat sealing layer is an ethylene-propylene-butylene ternary copolymer. When the film of the invention is heat-sealed with a pp cup material, heat sealing strength is 15-29 N/15 MM under the precondition of satisfying food safety, it is convenient for consumers to uncover the film and use, and the film can resist steaming and boiling of 121 DEG C.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to an easy-to-remove film. Background technique [0002] The easy release film material has been widely used in various packaging, and is used for the lid film of bowls, cups, barrels and boxes made of PP-based materials. Or heat seal with HDPE TYVEK. The heat seal strength of the commonly used sealing film on the market increases with the increase of heat sealing temperature. When the container is sealed firmly, the cover film can no longer be opened. There are also high-temperature cooking and easy-to-remove films made by cast casting on the market, which require a large order quantity and it is difficult to change the formula. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an easy-to-peel film substrate film that is easy to prepare, can seal packaging containers, has constant heat-sealing str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/30B32B27/32B32B33/00B29D7/01
CPCB29D7/01B29D2009/00B32B27/08B32B27/30B32B27/32B32B27/327B32B33/00B32B2250/03B32B2250/24B32B2270/00B32B2307/306B32B2307/308B32B2307/31B32B2439/70
Inventor 徐国柱何伟
Owner 惠州德昉高分子膜材料有限公司
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