CN104070757A

CN104070757A - CPP (casting polypropylene) matt film and preparation method thereof

Info

Publication number: CN104070757A
Application number: CN201410275117.0A
Authority: CN
Inventors: 陈思红; 汤亮; 罗斌
Original assignee: JINJIANG XINHEFA PLASTIC PRINTING CO Ltd
Current assignee: JINJIANG XINHEFA PLASTIC PRINTING CO Ltd
Priority date: 2014-06-19
Filing date: 2014-06-19
Publication date: 2014-10-01

Abstract

The invention relates to a CPP (casting polypropylene) matt film and a preparation method thereof. The CPP matt film consists of a matt PP layer A, a homo-polymer PP layer B and a matt PP layer C, wherein the thickness ratio of formula layers of the matt PP layer A, the homo-polymer PP layer B and the matt PP layer C is 1 to 3 to1; the matt PP layer A consists of 80% of PGR2446 and 20% of binary CF800E; the homo-polymer PP layer B consists of 95% of T30S and 5% of an auxiliary agent; the matt PP layer C consists of 80% of PGR2446 and 20% of ternary C7632. The CPP matt film has a matt effect and a hazy sense of beauty in appearance and is high in grade; the surface of the CPP matt film has a dull polish hand feel and is tender and excellent in texture; compared with an OPP (oriented polypropylene) matt film in the market, the CPP matt film has excellent heat-seal performance on two surfaces and can be directly thermally sealed into a bag without being compounded; the CPP matt film does not need to be compounded and glued, so that the softness is preferable, the cost is lowered, and the solvent pollution is reduced; the process is high in automation degree and efficiency and good in benefit.

Description

A kind of delustring CPP film and preparation method thereof

Technical field

The invention belongs to matt film technical field, what be specifically related to is a kind of delustring CPP film, and preparation method thereof.

Background technology

Along with people's living standard progressively improves, paper for daily use not only in amount demand increasing, and also improve constantly in matter, paper handkerchief packaging is on the market almost transparent entirely at present, fraction is milky white, there is no difference, there is no class, also there is fraction to beadopt BOPP matt film, BOPP matt film is by add the poor material of several compatibilities in the one side of BOPP film, when stretched, and the countless micropores of incompatible generation of interfaces, these micropores make to be irradiated to this surperficial light and produce diffusion or scattering many times, thereby reach the object of delustring.

Because BOPP matt film is the incompatible generation of interfaces pore between macromolecular compound and silica or calcium carbonate fine powder and reach the object of delustring while stretching through high multiple, therefore BOPP matt film has also been caused to a lot of infringements, as the scratch of delustring layer, sticky wound, melt body the break abatjour, the silver point etc. that produce, cause BOPP film impact strength poor, resistance to tearing is poor, has limited its extensive utilization at many packaging fields.

Summary of the invention

The object of this invention is to provide a kind of flexible, delustring CPP film resistance toly pierce through, tear-resistant performance being good and preparation method thereof.

The present invention is achieved by the following technical solutions: delustring CPP film, formed by tri-layers of A layer delustring PP, B layer homopolymerization PP and C layer delustring PP, and the formula bed thickness of A layer delustring PP, B layer homopolymerization PP and C layer delustring PP is than being 1:3:1.

Described A layer delustring PP is made up of 80%PGR2446 and 20% binary the third F800E.

Described B layer homopolymerization PP is made up of 95%T30S and 5% auxiliary agent.

Described C layer delustring PP is made up of 80%PGR2446 and 20% ternary third 7632.

Another object of the present invention is to provide the preparation method of delustring CPP film: in the feed proportioning system of extruder, carry out automatic blending, raw material through preparing compares and passes through filter screen and extrude by certain bed thickness in extruder, and its extruder extruded material merges into three layers and goes out through die head lip curtain coating at die head conductance face place; The high temperature melt going out from die head lip curtain coating is fallen cold roller traction and is cast film; And carry out sided corona treatment at film surface, its corona value is not less than 44 dyne, casts film laggard gap in the ranks rolling and cuts.

Beneficial effect of the present invention embodies and is: compared with prior art, matt film outward appearance of the present invention is dumb light effect, has obscuration aesthetic sense, aobvious high-grade; Surface frosted feel, and quality is soft, and texture is splendid; Compared with delustring OPP on the market, delustring CPP has two-sided splendid heat sealability, can directly seal into bag without compound; Without compound, pliability is better, and without gluing, both cost-saving, reduce again solvent contamination; Process automation degree of the present invention is strong, and efficiency is high, profitable.

Brief description of the drawings

Below in conjunction with accompanying drawing, the present invention will be described in detail.

Fig. 1 is structural representation of the present invention.

Fig. 2 is flow diagram of the present invention.

Detailed description of the invention

As shown in Figure 1, delustring CPP film, be made up of, and the formula bed thickness of A layer delustring PP 1, B layer homopolymerization PP 2 and C layer delustring PP 3 is than being 1:3:1 3 three layers of A layer delustring PP 1, B layer homopolymerization PP 2 and C layer delustring PP.

Described A layer delustring PP 1 is made up of 80%PGR2446 and 20% binary the third F800E.

Described B layer homopolymerization PP 2 is made up of 95%T30S and 5% auxiliary agent.

Described C layer delustring PP 3 is made up of 80%PGR2446 and 20% ternary third 7632.

As shown in Figure 2, the preparation method of delustring CPP film: carry out automatic blending in the feed proportioning system of extruder, raw material through preparing compares and passes through filter screen and extrude by certain bed thickness in extruder, and its extruder extruded material merges into three layers and goes out through die head lip curtain coating at die head conductance face place; The high temperature melt going out from die head lip curtain coating is fallen cold roller traction and is cast film; And carry out sided corona treatment at film surface, its corona value is not less than 44 dyne, casts film laggard gap in the ranks rolling and cuts; Film appearance surface has not allowed cut, greasy dirt, impurity, wrinkle extremely, abnormal precipitate, obviously water wave, impression and mosquito.

The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.

Claims

1. delustring CPP film, is characterized in that: be made up of tri-layers of A layer delustring PP, B layer homopolymerization PP and C layer delustring PP, and the formula bed thickness of A layer delustring PP, B layer homopolymerization PP and C layer delustring PP is than being 1:3:1.

2. delustring CPP film according to claim 1, is characterized in that: A layer delustring PP is made up of 80%PGR2446 and 20% binary the third F800E.

3. delustring CPP film according to claim 1, is characterized in that: B layer homopolymerization PP is made up of 95%T30S and 5% auxiliary agent.

4. delustring CPP film according to claim 1, is characterized in that: C layer delustring PP is made up of 80%PGR2446 and 20% ternary third 7632.

5. the preparation method of delustring CPP film according to claim 1: it is characterized in that: carry out automatic blending in the feed proportioning system of extruder, raw material through preparing compares and passes through filter screen and extrude by certain bed thickness in extruder, and its extruder extruded material merges into three layers and goes out through die head lip curtain coating at die head conductance face place; The high temperature melt going out from die head lip curtain coating is fallen cold roller traction and is cast film; And carry out sided corona treatment at film surface, its corona value is not less than 44 dyne, casts film laggard gap in the ranks rolling and cuts.