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Biaxially-oriented polypropylene (BOPP) coated heat sealable film

A heat-sealing film and coating technology, applied in the field of packaging materials, can solve the problems of high heat-sealing temperature, poor printing performance, and difficult UV ink adhesion, and achieve the effect of low heat-sealing temperature and enhanced printability.

Active Publication Date: 2012-07-11
HUBEI FIRSTA MATERIALS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the label industry (BOPP coating film is the upper film for making label materials), since the surface of BOPP coating film is non-polar, and the surface tension itself is not high (generally no more than 32 dyne) and falls very fast, making UV The adhesion of ink on the surface of BOPP is extremely difficult
The existing BOPP coating film has the following disadvantages: the corona value can only reach 38 dynes in one month, the printing performance is poor, and the heat sealing temperature is high

Method used

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  • Biaxially-oriented polypropylene (BOPP) coated heat sealable film
  • Biaxially-oriented polypropylene (BOPP) coated heat sealable film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 As shown, the BOPP coated heat-sealing film includes functional layer 1, core layer 2 and sub-functional layer 3, the core layer is located between the functional layer and the sub-functional layer, and the functional layer, core layer and sub-functional layer are co-extruded Afterwards, it is integrated by two-way stretching; the mass percentages of functional layer, core layer, and sub-functional layer are: functional layer 1%, core layer 98%, and sub-functional layer 1%;

[0019] The material of the functional layer is composed of ethyl acetate, C9 hydrogenated petroleum resin (or called C9 hydrogenated petroleum resin, hydrogenated C9 petroleum resin), polypropylene, polyvinyl alcohol, sodium hydroxide, antioxidant and dispersant. The percentage by mass is: ethyl acetate 55%, C9 hydrogenated petroleum resin 10%, polypropylene 18%, polyvinyl alcohol 13%, sodium hydroxide 2%, antioxidant 1%, dispersant 1%;

[0020] The material of the core layer is c...

Embodiment 2

[0030] Such as figure 1 As shown, the BOPP coated heat-sealing film includes a functional layer, a core layer and a sub-functional layer. The core layer is located between the functional layer and the sub-functional layer. The functional layer, the core layer and the sub-functional layer are bidirectionally Stretched and integrated; the mass percentage of functional layer, core layer and sub-functional layer is: 8% of functional layer, 91% of core layer, and 1% of sub-functional layer;

[0031] The material of the functional layer is composed of ethyl acetate, C9 hydrogenated petroleum resin (or called C9 hydrogenated petroleum resin, hydrogenated C9 petroleum resin), polypropylene, polyvinyl alcohol, sodium hydroxide, antioxidant and dispersant. The percentage by mass is: ethyl acetate 55%, C9 hydrogenated petroleum resin 10%, polypropylene 18%, polyvinyl alcohol 13%, sodium hydroxide 2%, antioxidant 1%, dispersant 1%;

[0032] The material of the core layer is composed of p...

Embodiment 3

[0042] Such as figure 1 As shown, the BOPP coated heat-sealing film includes a functional layer, a core layer and a sub-functional layer. The core layer is located between the functional layer and the sub-functional layer. The functional layer, the core layer and the sub-functional layer are bidirectionally Stretched and integrated; the mass percentage of functional layer, core layer and secondary functional layer is: functional layer 3%, core layer 92%, secondary functional layer 5%;

[0043] The material of the functional layer is composed of ethyl acetate, C9 hydrogenated petroleum resin (or called C9 hydrogenated petroleum resin, hydrogenated C9 petroleum resin), polypropylene, polyvinyl alcohol, sodium hydroxide, antioxidant and dispersant. The percentage by mass is: ethyl acetate 55%, C9 hydrogenated petroleum resin 10%, polypropylene 18%, polyvinyl alcohol 13%, sodium hydroxide 2%, antioxidant 1%, dispersant 1%;

[0044] The material of the core layer is composed of poly...

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Abstract

The invention belongs to the technical field of packaging materials and relates to a biaxially-oriented polypropylene (BOPP) coated heat sealable film, which is characterized by comprising a function layer, a core layer and a sub function layer, wherein the core layer is positioned between the function layer and the sub function layer, and the function layer, the core layer and the sub function layer are subjected to co-extrusion and biaxial tension to form a whole; the BOPP coated heat sealable film comprises 1 to 8 mass percent of function layer, 91 to 98 mass percent of core layer and 1 to 5 mass percent of sub function layer; the function layer is prepared from the following raw materials in percentage by mass: 55 percent of acetic ether, 10 percent of C9 hydrogenated petroleum resin, 18 percent of polypropylene, 13 percent of polyvinyl alcohol, 2 percent of sodium hydroxide, 1 percent of antioxidant and 1 percent of dispersing agent; the core layer is prepared from the following raw materials in percentage by mass: 73 to 82 percent of polypropylene, 10 to 15 percent of stiffening agent and 8 to 12 percent of anti-static slipping agent; and the sub function layer is prepared from the following raw materials in percentage by mass: 1 percent of SiO2 and 99 percent of propylene copolymer. The BOPP coated heat sealable film has the characteristics of good printing performance and low heat sealing temperature.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a BOPP coating film. Background technique [0002] Some characteristics of BOPP coating film itself make it widely used in flexible packaging industry, such as cigarette labels, laser, food packaging and so on. However, in the label industry (BOPP coating film is the upper film for making label materials), since the surface of BOPP coating film is non-polar, and the surface tension itself is not high (generally no more than 32 dyne) and falls very fast, making UV The adhesion of ink on the surface of BOPP is extremely difficult. The existing BOPP coating film has the following disadvantages: the corona value can only reach 38 dynes in one month, the printing performance is poor, and the heat sealing temperature is high. Contents of the invention [0003] The purpose of the present invention is to provide a BOPP coated heat-sealing film with good printi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/18B32B27/32C08L23/12C08L23/14C08L29/04C08L57/02C08K3/22C08K3/36C08K5/20C08K5/10
Inventor 褚峰林江四华
Owner HUBEI FIRSTA MATERIALS SCI & TECH GRP
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