Extinction polypropylene aluminized film and preparation method thereof

Abstract

The invention relates to the technical field of plastic films, in particular to an extinction polypropylene aluminized film and a preparation method thereof.The polypropylene aluminized film comprises an aluminized layer A, a corona layer B, a supporting layer C, a supporting layer D and an extinction layer E from inside to outside; the mass ratio of the aluminized layer A to the corona layer B to the supporting layer C to the supporting layer D to the extinction layer E is (0.1-0.4): (15-20): (30-35): (30-35): (12-22); according to the prepared extinction polypropylene aluminum-plated film, a traditional four-layer structure is improved to a five-layer structure, and the special composite appearance of extinction and aluminum plating is achieved; the extinction polypropylene aluminum-plated film can be directly applied to a single layer, so that the matte oil printing process of downstream color printing enterprises can be saved, the process is simplified, and the cost is saved; and meanwhile, the problem of solvent residue in the printing process is thoroughly solved, and more environment friendliness is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic films, and more particularly to a matte polypropylene aluminum-plated film and a preparation method thereof. Background Art

[0002] Matting and aluminized effects are special forms of propylene film, which have significantly different appearances from ordinary polypropylene glossy film. In some application fields, both matting and aluminized effects are required. The current mainstream technical solution is as follows: a layer of matte ink with matte effect is printed on the surface of aluminized polypropylene film as a printing material. However, in the final hot-cutting bag-making process, the matte ink easily falls off, causing appearance defects.

[0003] Therefore, the present invention aims at the above problems and provides a matte polypropylene aluminum-plated film and a preparation method thereof. Summary of the invention

[0004] The purpose of the present invention is to provide a matte polypropylene aluminum-plated film and a preparation method thereof to solve the above-mentioned problems. The matte polypropylene aluminum-plated film provided by the present invention upgrades the traditional four-layer structure to a five-layer structure, and realizes a special composite appearance of matte and aluminum plating; the matte polypropylene aluminum-plated film can be directly applied in a single layer, which can save the matte oil printing process of downstream color printing companies, simplify the process, and save costs; at the same time, it completely solves the problem of solvent residues in the printing process, which is more environmentally friendly.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] The first aspect of the present invention provides a matte polypropylene aluminum-coated film, which comprises, from the inside to the outside, an aluminum-coated layer A, a corona layer B, a support layer C, a support layer D, and a matte layer E; the mass ratio of the aluminum-coated layer A, the corona layer B, the support layer C, the support layer D, and the matte layer E is (0.1-0.4): (15-20): (30-35): (30-35): (12-22).

[0007] Furthermore, the raw material for preparing the aluminum-plated layer A includes metallic aluminum; the thickness of the aluminum-plated layer A is 30nm to 50nm.

[0008] Furthermore, the raw materials for preparing the corona layer B include ternary copolymer polypropylene FL7540L8 (Singapore TPC) and open masterbatch AB6089 (Suzhou Constant); the mass ratio of the ternary copolymer polypropylene to the open masterbatch is 100:(2-3).

[0009] Furthermore, the raw material for preparing the support layer C includes homopolypropylene HP510M (CNOOC Shell).

[0010] Furthermore, the raw materials for preparing the support layer D include homopolypropylene HP510M (CNOOC Shell) and / or homopolypropylene HD601CF (Borouge Chemicals).

[0011] Furthermore, the raw materials for preparing the matt layer E include ternary copolymer polypropylene F6908 (Lihe Zhixin) and matt masterbatch XG001 (Xin Yilong Materials), and / or the raw materials for preparing the matt layer E include ternary copolymer polypropylene C5908 (Yanshan Petrochemical) and matt masterbatch XG001 (Xin Yilong Materials); the mass ratio of the ternary copolymer polypropylene and the matt masterbatch is 100:(30-50).

[0012] Furthermore, the thickness of the polypropylene film is 20 μm to 50 μm.

[0013] The second aspect of the present invention provides a method for preparing the above-mentioned matte polypropylene aluminum-coated film, comprising: extruding the raw materials for preparing the corona layer B, the support layer C, the support layer D, and the matte layer E to obtain the matte polypropylene film, and then vacuum evaporating the raw materials for preparing the aluminum-coated layer A.

[0014] Furthermore, the extrusion temperature is 190°C to 235°C.

[0015] In the present invention, the preparation method of the matt polypropylene aluminum-plated film is not particularly limited, and the method is a conventional technical means known to those skilled in the art.

[0016] The method for preparing the above-mentioned matt polypropylene aluminum-plated film of the present invention specifically comprises the following steps:

[0017] Step 1, preparing materials: prepare raw materials for the aluminum plating layer A, the corona layer B, the support layer C, the support layer D, and the matte layer E respectively according to the mass ratio and set aside;

[0018] Step 2, loading: the raw materials of corona layer B, support layer C, support layer D, and matt layer E prepared in step 1 are respectively loaded into the hoppers of extruder I, extruder II, extruder III, and extruder IV;

[0019] Step 3, preparation of matt polypropylene film: the extruders are set to increase the temperature in a gradient manner to 190°C, 200°C, 200°C, 200°C, 210°C, 210°C, 210°C, 220°C, 220°C, 230°C, 230°C, 230°C, 235°C, 235°C, 235°C, and the raw materials of each layer in the hoppers of extruder I, extruder II, extruder III and extruder IV are extruded through a T-die under a pressure of 12MPa to 18MPa, and the matt polypropylene film is obtained by traction, cooling, corona treatment and winding;

[0020] Step 4: Preparation of matt polypropylene aluminum-plated film: The raw material for preparing the matt layer A is plated on the inner side of the matt polypropylene film by a vacuum evaporation process to obtain the matt polypropylene aluminum-plated film.

[0021] Beneficial effects:

[0022] The matte polypropylene aluminum-plated film prepared by the present invention upgrades the traditional four-layer structure to a five-layer structure, and realizes a special composite appearance of matte and aluminum plating; the matte polypropylene aluminum-plated film can be directly applied in a single layer, which can save the matte oil printing process of downstream color printing companies, simplify the process, and save costs; at the same time, it completely solves the problem of solvent residues in the printing process, which is more environmentally friendly.

[0023] The matt polypropylene aluminum-plated film prepared by the invention has a simple preparation method, abundant raw material sources, low price, low production cost and is suitable for large-scale industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the matte polypropylene aluminum-plated film of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be further explained below in conjunction with the embodiments.

[0027] Example 1

[0028] A kind of matte polypropylene aluminum-plated film

[0029] It includes an aluminum coating layer A, a corona layer B, a support layer C, a support layer D, and a matte layer E;

[0030] Among them, the mass ratio of the aluminum plating layer A, the corona layer B, the support layer C, the support layer D, and the matte layer E is 0.25:18:30:35:17;

[0031] Among them, the raw materials for preparing the aluminum-plated layer A include metallic aluminum; the raw materials for preparing the corona layer B include ternary copolymer polypropylene FL7540L (Singapore TPC) and open masterbatch AB6089 (Suzhou Constant); the mass ratio of the ternary copolymer polypropylene to the open masterbatch is 100:3; the raw materials for preparing the supporting layer C include homopolymer polypropylene HP510M (CNOOC Shell); the raw materials for preparing the supporting layer D include homopolymer polypropylene HP510M (CNOOC Shell); the raw materials for preparing the matte layer E include ternary copolymer polypropylene F6908 (Lihe Zhixin) and matte masterbatch XG001 (Xinyilong Materials); the mass ratio of the ternary copolymer polypropylene to the matte masterbatch is 100:50.

[0032] The preparation steps are as follows:

[0033] Step 1, preparing materials: prepare raw materials for the aluminum plating layer A, the corona layer B, the support layer C, the support layer D, and the matte layer E respectively according to the mass ratio and set aside;

[0034] Step 2, loading: the raw materials of corona layer B, support layer C, support layer D, and matt layer E prepared in step 1 are respectively loaded into the hoppers of extruder I, extruder II, extruder III, and extruder IV;

[0035] Step 3, preparation of matt polypropylene film: the extruders are set to increase the temperature in a gradient manner to 190°C, 200°C, 200°C, 200°C, 210°C, 210°C, 210°C, 220°C, 220°C, 230°C, 230°C, 230°C, 235°C, 235°C, 235°C, and the raw materials of each layer in the hoppers of extruder I, extruder II, extruder III and extruder IV are extruded through a T-die under a pressure of 12MPa to 18MPa, and the matt polypropylene film is obtained by traction, cooling, corona treatment and winding;

[0036] Step 4, preparation of matt polypropylene aluminum-plated film: the raw material for preparing matt layer A is plated on the inner side of the matt polypropylene film by vacuum aluminum plating process to obtain the matt polypropylene aluminum-plated film with a thickness of 35 μm, and the thickness of the aluminum-plated layer A is 40 nm.

[0037] Example 2

[0038] A kind of matte polypropylene aluminum-plated film

[0039] It includes an aluminum coating layer A, a corona layer B, a support layer C, a support layer D, and a matte layer E;

[0040] Among them, the mass ratio of the aluminum coating layer A, the corona layer B, the support layer C, the support layer D, and the matte layer E is 0.4:18:33:33:16;

[0041] Among them, the raw materials for preparing the aluminum-plated layer A include metallic aluminum; the raw materials for preparing the corona layer B include ternary copolymer polypropylene FL7540L (Singapore TPC) and open masterbatch AB6089 (Suzhou Constant); the mass ratio of the ternary copolymer polypropylene to the open masterbatch is 100:2; the raw materials for preparing the supporting layer C include homopolymer polypropylene HP510M (CNOOC Shell); the raw materials for preparing the supporting layer D include homopolymer polypropylene HD601CF (Borouge Chemical); the raw materials for preparing the matte layer E include ternary copolymer polypropylene C5908 (Yanshan Petrochemical) and matte masterbatch XG001 (Xinyilong Materials); the mass ratio of the ternary copolymer polypropylene to the matte masterbatch is 100:30.

[0042] The preparation steps are as follows:

[0043] Step 1, preparing materials: prepare raw materials for the aluminum plating layer A, the corona layer B, the support layer C, the support layer D, and the matte layer E respectively according to the mass ratio and set aside;

[0044] Step 2, loading: the raw materials of corona layer B, support layer C, support layer D, and matt layer E prepared in step 1 are respectively loaded into the hoppers of extruder I, extruder II, extruder III, and extruder IV;

[0045] Step 3, preparation of matt polypropylene film: the extruders are set to increase the temperature in a gradient manner to 190°C, 200°C, 200°C, 200°C, 210°C, 210°C, 210°C, 220°C, 220°C, 230°C, 230°C, 230°C, 235°C, 235°C, 235°C, and the raw materials of each layer in the hoppers of extruder I, extruder II, extruder III and extruder IV are extruded through a T-die under a pressure of 12MPa to 18MPa, and the matt polypropylene film is obtained by traction, cooling, corona treatment and winding;

[0046] Step 4, preparation of matt polypropylene aluminum-plated film: the raw material for preparing matt layer A is plated on the inner side of the matt polypropylene film by vacuum aluminum plating process to obtain the matt polypropylene aluminum-plated film with a thickness of 35 μm, and the thickness of the aluminum-plated layer A is 40 nm.

[0047] Example 3

[0048] A kind of matte polypropylene aluminum-plated film

[0049] It includes an aluminum coating layer A, a corona layer B, a support layer C, a support layer D, and a matte layer E;

[0050] Among them, the mass ratio of the aluminum plating layer A, the corona layer B, the support layer C, the support layer D, and the matte layer E is 0.35:20:30:30:20;

[0051] Among them, the raw materials for preparing the aluminum-plated layer A include metallic aluminum; the raw materials for preparing the corona layer B include ternary copolymer polypropylene FL7540L (Singapore TPC) and open masterbatch AB6089 (Suzhou Constant); the mass ratio of the ternary copolymer polypropylene to the open masterbatch is 100:2.5; the raw materials for preparing the supporting layer C include homopolymer polypropylene HP510M (CNOOC Shell); the raw materials for preparing the supporting layer D include homopolymer polypropylene HD601CF (Borouge Chemical); the raw materials for preparing the matte layer E include ternary copolymer polypropylene C5908 (Yanshan Petrochemical) and matte masterbatch XG001 (Xinyilong Materials); the mass ratio of the ternary copolymer polypropylene to the matte masterbatch is 100:40.

[0052] The preparation steps are as follows:

[0053] Step 1, preparing materials: prepare raw materials for the aluminum plating layer A, the corona layer B, the support layer C, the support layer D, and the matte layer E respectively according to the mass ratio and set aside;

[0054] Step 2, loading: the raw materials of corona layer B, support layer C, support layer D, and matt layer E prepared in step 1 are respectively loaded into the hoppers of extruder I, extruder II, extruder III, and extruder IV;

[0055] Step 3, preparation of matt polypropylene film: the extruders are set to increase the temperature in a gradient manner to 190°C, 200°C, 200°C, 200°C, 210°C, 210°C, 210°C, 220°C, 220°C, 230°C, 230°C, 230°C, 235°C, 235°C, 235°C, and the raw materials of each layer in the hoppers of extruder I, extruder II, extruder III and extruder IV are extruded through a T-die under a pressure of 12MPa to 18MPa, and the matt polypropylene film is obtained by traction, cooling, corona treatment and winding;

[0056] Step 4, preparation of matt polypropylene aluminum-plated film: the raw material for preparing matt layer A is plated on the inner side of the matt polypropylene film by vacuum aluminum plating process to obtain the matt polypropylene aluminum-plated film with a thickness of 35 μm, and the thickness of the aluminum-plated layer A is 40 nm.

[0057] The structure of the traditional matte polypropylene aluminum-plated film is: BOPP / matte ink / glue / CPP. It requires two processes, printing and ink, and both processes will produce waste gas. The matte polypropylene aluminum-plated film prepared by the present invention is a single multifunctional composite material. The single material can achieve an alternative product with equivalent appearance effect, which is more energy-saving and environmentally friendly. In addition, by comparing the haze and heat sealing performance, the matte polypropylene aluminum-plated film prepared by the present invention has reached a level comparable to that of the traditional matte polypropylene aluminum-plated film (composite structure), see Table 1 for details.

[0058] Table 1

[0059]

[0060] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the description of the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention shall be equivalent replacement methods and shall be included in the protection scope of the present invention.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A matte polypropylene aluminized film, characterized in that: The polypropylene aluminum-plated film includes an aluminum-plated layer A, a corona layer B, a support layer C, a support layer D, and an extinction layer E from the inside to the outside; the mass ratio of the aluminum-plated layer A, the corona layer B, the support layer C, the support layer D, and the extinction layer E is (0.1-0.4): (15-20): (30-35): (30-35): (12-22).

2. The polypropylene aluminum-plated film according to claim 1, characterized in that: The raw material for preparing the aluminum-plated layer A includes metal aluminum; the thickness of the aluminum-plated layer A is 30nm-50nm.

3. The polypropylene aluminum-plated film according to claim 1, characterized in that: The raw materials for preparing the corona layer B include ternary copolymer polypropylene FL7540L8 and open masterbatch AB6089; the mass ratio of the ternary copolymer polypropylene to the open masterbatch is 100:(2-3).

4. The polypropylene aluminum-plated film according to claim 1, characterized in that: The raw material for preparing the support layer C includes homopolypropylene HP510M.

5. The polypropylene aluminum-plated film according to claim 1, characterized in that: The raw materials for preparing the support layer D include homopolypropylene HP510M and / or homopolypropylene HD601CF.

6. The polypropylene aluminum-plated film according to claim 1, characterized in that: The raw materials for preparing the matt layer E include ternary copolymer polypropylene F6908 and matt masterbatch XG001, and / or the raw materials for preparing the matt layer E include ternary copolymer polypropylene C5908 and matt masterbatch XG001; the mass ratio of the ternary copolymer polypropylene to the matt masterbatch is 100:(30-50).

7. The aluminum-plated polypropylene film according to claim 1, characterized in that: The thickness of the aluminum-plated polypropylene film is 20 μm to 50 μm.

8. A method for preparing the aluminum-plated polypropylene film according to any one of claims 1 to 7, characterized in that: The preparation method comprises: extruding raw materials for preparing corona layer B, support layer C, support layer D and matt layer E to obtain matt polypropylene film, and then vacuum evaporating raw materials for preparing aluminum plating layer A.

9. The preparation method according to claim 8, characterized in that: The extrusion temperature is 190°C to 235°C.

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