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Manufacturing process of three-layer co-extrusion nano-modified BOPP matt film

A nano-modification and manufacturing process technology, applied in the direction of lamination, layered products, lamination devices, etc., can solve the problems of low extinction performance, low yield, poor product quality, etc., and improve the roughness of the matte surface. , Improve wear resistance, achieve the effect of surface roughness and scattering properties

Inactive Publication Date: 2016-04-20
HAINING CHANGKUN PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing BOPP matting film manufacturing process generally has the problems of low yield, poor product quality and low matting performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In the embodiment of the present invention, a manufacturing process of a three-layer co-extruded nano-modified BOPP matting film, the BOPP matting film is composed of an upper surface layer, a core layer and a lower surface layer from top to bottom, and the manufacturing process includes The following steps:

[0023] (1) Accurately weigh the raw materials of the core layer according to the proportion, mix them uniformly and dry them, and then enter the melting single-screw extruder and metering single-screw extruder in series for melting and plasticization, and then pass through the coarse filter, metering pump, The main filter enters the die head, and the melting temperature is controlled to be 250°C; the core layer is composed of homopolypropylene 60%, slip agent masterbatch 28%, and antistatic agent masterbatch 12% in terms of mass percentage; slip agent The masterbatch is composed of 65% homopolypropylene and 35% slip agent in terms of mass percentage; the antistati...

Embodiment 2

[0027] In the embodiment of the present invention, a manufacturing process of a three-layer co-extruded nano-modified BOPP matting film, the BOPP matting film is composed of an upper surface layer, a core layer and a lower surface layer from top to bottom, and the manufacturing process includes The following steps:

[0028] (1) Accurately weigh the raw materials of the core layer according to the proportion, mix them uniformly and dry them, and then enter the melting single-screw extruder and metering single-screw extruder in series for melting and plasticization, and then pass through the coarse filter, metering pump, The main filter enters the die head, and the melting temperature is controlled to be 270°C; the core layer is composed of 80% homopolypropylene, 15% slip agent masterbatch, and 5% antistatic agent masterbatch in terms of mass percentage; slip agent The masterbatch is composed of 72% homopolypropylene and 28% slip agent in terms of mass percentage; the antistatic...

Embodiment 3

[0032] In the embodiment of the present invention, a manufacturing process of a three-layer co-extruded nano-modified BOPP matting film, the BOPP matting film is composed of an upper surface layer, a core layer and a lower surface layer from top to bottom, and the manufacturing process includes The following steps:

[0033] (1) Accurately weigh the raw materials of the core layer according to the proportion, mix them uniformly and dry them, and then enter the melting single-screw extruder and metering single-screw extruder in series for melting and plasticization, and then pass through the coarse filter, metering pump, The main filter enters the die head, and the melting temperature is controlled to be 260°C; the core layer is composed of 70% homopolypropylene, 20% slip agent masterbatch, and 10% antistatic agent masterbatch in terms of mass percentage; slip agent The masterbatch is composed of 68% homopolypropylene and 32% slip agent in terms of mass percentage; the antistati...

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Abstract

The invention discloses a manufacturing process of a three-layer co-extrusion nano-modified BOPP matt film. The manufacturing process comprises the following steps: after mixing and drying raw materials of a coring layer, an upper surface layer and a lower surface layer, entering respective single screw extruders to carry out melt plastification, and then entering a die head through a filter and a metering pump; flowing out after converging a three-layer polymer melt at the position of the die head, quickly attaching to the surface of a quenching roller under the effect of an air knife attaching device, forming a solid sheet through quick cooling of the quenching roller and a water channel, then carrying out longitudinal and transverse stretching in sequence, and then instantly carrying out air cooling treatment; then subsequently carrying out online thickness measurement, boundary material cutting, static elimination, automatic rolling, aging treatment and slitting. The manufacturing process adopts a three-layer co-extrusion compounding technology, the BOPP matt film with high extinction property, good abrasion resistance and high rate of finished products is prepared by using an improved raw material formula.

Description

technical field [0001] The invention relates to the technical field of plastic film processing, in particular to a manufacturing process of a three-layer co-extruded nano-modified BOPP matting film. Background technique [0002] BOPP is the abbreviation of "BiaxiallyOriented Polypropylene", that is, biaxially oriented polypropylene film. Its production is to first make the melt of high molecular polypropylene into a sheet or a thick film through a long and narrow machine head, and then in a special stretching machine, at a certain temperature and a set speed, simultaneously or step by step Films made by stretching in two vertical directions (longitudinal and transverse) and undergoing appropriate cooling or heat treatment or special processing (such as corona, coating, etc.). [0003] Matting film is a kind of packaging film with low gloss and high haze to diffuse reflection and matting effect. The surface of the film is similar to paper and has very low gloss. The surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/15B32B38/00B32B38/12B32B27/18B32B27/32B29C47/06B29C55/12
CPCB32B37/153B29C48/18B29C55/12B32B27/18B32B27/32B32B38/0036B32B38/12B32B2307/306B32B2307/408B32B2307/554
Inventor 吴春锋张俊杰王勇唐海波汪桂林陈小平胡毅
Owner HAINING CHANGKUN PACKAGING
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