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Biaxially-oriented polypropylene (BOPP) coated film

A coating film and functional layer technology, applied in the field of packaging materials, can solve the problems of poor wipe resistance and low surface tension (generally no more than 32 dynes, corona value can only reach 38 dynes, etc., to achieve printing Enhanced durability and good scratch resistance

Inactive 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, and the wiping resistance is poor

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 1 As shown, the BOPP coating film includes a functional layer 1, a core layer 2 and a sub-functional layer 3, the core layer 2 is located between the functional layer 1 and the sub-functional layer 3, and the functional layer 1, the core layer 2 and the sub-functional layer 3 It is integrated by biaxial stretching after co-extrusion; the mass percentages of functional layer 1, core layer 2, and sub-functional layer 3 are: functional layer 1%, core layer 98%, and sub-functional layer 1%;

[0016] 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 mass percentages are: 55% ethyl acetate, 10% C9 hydrogenated petroleum resin, 18% polypropylene, 13% polyvinyl alcohol, 2% sodium hydroxide, 1% antioxidant, and 1% dispersant.

[0017] The material of the c...

Embodiment 2

[0024] Such as figure 1 As shown, the BOPP coating film includes a functional layer 1, a core layer 2 and a sub-functional layer 3, the core layer 2 is located between the functional layer 1 and the sub-functional layer 3, and the functional layer 1, the core layer 2 and the sub-functional layer 3 It is integrated by biaxial stretching after co-extrusion; the mass percentages of functional layer 1, core layer 2, and sub-functional layer 3 are: functional layer 5%, core layer 92%, and sub-functional layer 3%;

[0025] 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%;

[0026] The material of the core...

Embodiment 3

[0033] Such as figure 1 As shown, the BOPP coating film includes a functional layer 1, a core layer 2 and a sub-functional layer 3, the core layer 2 is located between the functional layer 1 and the sub-functional layer 3, and the functional layer 1, the core layer 2 and the sub-functional layer 3 It is integrated by biaxial stretching after co-extrusion; the mass percentages of functional layer 1, core layer 2, and sub-functional layer 3 are: functional layer 8%, core layer 91%, and sub-functional layer 1%;

[0034] 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%;

[0035] The material of the core...

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Abstract

The invention belongs to the technical field of packing materials, and particularly relates to a biaxially-oriented polypropylene (BOPP) coated film. The BOPP coated film is characterized by comprising 1 to 9 mass percent of functional layer, 91 to 98 mass percent of sandwich layer and 1 to 5 mass percent of secondary functional layer, wherein the sandwich layer is positioned between the functional layer and the secondary functional layer; the functional layer, the sandwich layer and the secondary functional layer are co-extruded and biaxially stretched to form a whole; the functional layer consists of the following raw materials in percentage by mass: 55 percent of ethyl acetate, 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 sandwich layer is made from polypropylene; and the secondary functional layer comprises the following components in percentage by mass: 1 to 10 percent of SiO2 and 90 to 99 percent of polypropylene. The BOPP coated film has the characteristic of high wiping resistance property.

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, and the wiping resistance is poor. Contents of the invention [0003] The purpose of the present invention is to provide a BOPP coating film with good scratch resistance. [0004] In order to achieve the above...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/18B32B27/32C08L57/02C08L23/12C08L29/04C08K3/22C08K3/36
Inventor 褚峰林江四华
Owner HUBEI FIRSTA MATERIALS SCI & TECH GRP
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