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A kind of non-milk heat-sealing film and preparation method thereof

A technology of heat sealing and heat sealing layer, which is applied in the direction of chemical instruments and methods, flexible coverings, coatings, etc., can solve the problems of poor heat sealing performance and non-stick milk effect, and achieve enhanced heat sealing effect and sealing effect , tightly combined, to avoid the effect of milk sticking to the cover film

Active Publication Date: 2018-08-28
ZHEJIANG GOLDSTONE PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is the defect of poor heat-sealing performance and non-stick milk effect existing in the non-milk heat-sealing film in the prior art, and then provides a film with good heat-sealing performance and non-stick milk effect. Remarkable milk-free heat-sealing film and preparation method thereof

Method used

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  • A kind of non-milk heat-sealing film and preparation method thereof
  • A kind of non-milk heat-sealing film and preparation method thereof
  • A kind of non-milk heat-sealing film and preparation method thereof

Examples

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Embodiment 1

[0041]This embodiment provides a milk-free heat-sealing film and a preparation method thereof. The milk-free heat-sealing film consists of a varnish layer, an ink layer, a paper layer, a VM-PET layer, a heat-sealing layer and a hydrophobic coating from the outside to the inside;

[0042] Among them, the paper weight is 50g / m 2 ; The thickness of the VM-PET layer is 12 μm; the heat-sealing layer is an acrylic resin layer with a thickness of 8 μm, a surface roughness of 5 μm, and an acrylic resin molecular weight of 75 000 to 120 000, with a weight of 5 g / m 2 ; The hydrophobic coating is a nano-silicon coating with a thickness of 5 μm and a nano-silicon particle size of 1-5 nm.

[0043] The preparation method of the milk-free heat-sealing film provided in this embodiment comprises the following steps:

[0044] S1. Use a gravure printing machine to print on the paper layer to form an ink layer. The printing speed is controlled at 150m / min, and the drying temperature is 60°C to ...

Embodiment 2

[0051] This embodiment provides a milk-free heat-sealing film and a preparation method thereof. The milk-free heat-sealing film consists of a varnish layer, an ink layer, a paper layer, a VM-PET layer, a heat-sealing layer and a hydrophobic coating from the outside to the inside;

[0052] Among them, the paper weight is 40g / m 2 ; The thickness of the VM-PET layer is 12 μm; the heat-sealing layer is an acrylic resin layer with a thickness of 2 μm, a surface roughness of 1 μm, and an acrylic resin molecular weight of 75 000 to 120 000, with a weight of 5 g / m 2 ; The hydrophobic coating is a nano-silicon coating with a thickness of 1 μm and a nano-silicon particle size of 5-10 nm.

[0053] The preparation method of the milk-free heat-sealing film provided in this embodiment comprises the following steps:

[0054] S1. Use a gravure printing machine to print on the paper layer to form an ink layer. The printing speed is controlled at 100m / min, and the drying temperature is 80°C t...

Embodiment 3

[0061] This embodiment provides a milk-free heat-sealing film and a preparation method thereof. The milk-free heat-sealing film consists of a varnish layer, an ink layer, a paper layer, a VM-PET layer, a heat-sealing layer and a hydrophobic coating from the outside to the inside;

[0062] Among them, the paper weight is 80g / m 2 ; The thickness of the VM-PET layer is 12 μm; the heat-sealing layer is an acrylic resin layer with a thickness of 10 μm, a surface roughness of 6 μm, and an acrylic resin molecular weight of 75 000 to 120 000, with a weight of 5 g / m 2 The hydrophobic coating is a nano-silicon coating with a thickness of 10 μm and a nano-silicon particle size of 10-15nm.

[0063] The preparation method of the milk-free heat-sealing film provided in this embodiment comprises the following steps:

[0064] S1. Use a gravure printing machine to print on the paper layer to form an ink layer. The printing speed is controlled to 220m / min, and the drying temperature is 40°C t...

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Abstract

The invention discloses a milk-proof heat sealing film and a preparation method thereof. The non-sticking heat sealing film comprises a barrier layer, a heat sealing layer and a hydrophobic layer which are arranged in sequence from outside to inside, wherein the heat sealing layer is made from acrylic resin or ethylene vinyl acetate copolymer resin; the hydrophobic layer is a nano silicon layer; the heat sealing film is obtained by coating or dry-type compounding of acrylic resin or ethylene vinyl acetate copolymer resin on the inner surface of the barrier layer; the heat sealing film is coated with the nano silicon layer , so that the milk-proof heat sealing film is obtained. The milk-proof heat sealing film has excellent hydrophobicity, is milk-proof, and has excellent heat sealing performance and sealing performance.

Description

technical field [0001] The invention belongs to the technical field of packaging, and in particular relates to a non-milk heat-sealing film and a preparation method thereof. Background technique [0002] The milk product cover film is used for the sealing of milk drinks, and plays the role of freshness preservation and sealing. Commonly used bottled milk or cup milk cover film is mostly made of aluminum-plastic composite film or aluminum-plated composite film, which is often obtained by laminating multiple layers of materials. For example, use two-component polyurethane glue to glue the barrier layer to the printing layer and the heat-sealing layer. The material of the heat-sealing layer can be polyethylene, polypropylene, heat-sealing adhesive or hot-melt adhesive and other materials. , or materials modified on the basis of polyethylene, polypropylene, etc. In the process of preparing the heat-sealing layer, polyethylene, polypropylene and their modified materials can be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/36B32B27/32B32B27/06B32B15/20B32B15/04B32B29/00B32B33/00B65D65/40
CPCB32B15/04B32B15/20B32B27/06B32B27/32B32B27/36B32B29/00B32B33/00B32B2255/26B32B2307/31B65D65/40
Inventor 曾文明陈灿孙国锦
Owner ZHEJIANG GOLDSTONE PACKING
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