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Preparation method of ultra-thin ultra-specular polypropylene aluminum plating base material film

A technology for film preparation and polypropylene material, applied in the field of film packaging, can solve the problems of high packaging cost, low surface brightness, poor aluminized film effect, etc., and achieve excellent surface super-mirror effect, improve optical performance, and high production efficiency Effect

Active Publication Date: 2019-04-09
烟台丰福莱薄膜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problems of relatively large film thickness of the existing aluminized base material, relatively low surface brightness and low preparation efficiency, which lead to relatively high packaging cost and poor effect of the prepared aluminized film, and provides a super-mirror effect on the surface. The polypropylene aluminum-coated substrate film breaks through the thickness limit of the traditional casting method to produce polypropylene film, and realizes the reduction application of polypropylene film

Method used

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  • Preparation method of ultra-thin ultra-specular polypropylene aluminum plating base material film
  • Preparation method of ultra-thin ultra-specular polypropylene aluminum plating base material film
  • Preparation method of ultra-thin ultra-specular polypropylene aluminum plating base material film

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Effect test

Embodiment 1

[0031] This embodiment adopts a single-layer material structure, and 100% Nordic chemical copolymerized polypropylene resin RB707CF is selected as the high melt strength polypropylene material, wherein the Vicat softening point of RB707CF is 125°C.

[0032] Such as figure 1 As shown, the specific preparation method is: add RB707CF into the silo 1, heat and melt it through the extruder 2, and then extrude it from the die head 3. The blow-up ratio is 2.3, and the temperature of the molten material is adjusted and controlled between 210°C and 230°C. , the initial thickness of the film is set to 48 microns, and the film bubble 5 is blown into the film bubble 5 by the automatic wind ring 4 and the thickness is adjusted. The thickness measurement module 6 performs a thickness measurement once, and then the traction roller mechanism 7 performs clamping and traction, and the traction speed is 50 m / min. Use the stretching roller 9 to carry out online longitudinal stretching at a temper...

Embodiment 2

[0034]This embodiment adopts a three-layer material structure, and the structural composition is A / B / C, wherein the thickness ratio of the three layers of A, B, and C is 1:2:1, A and B are the surface layers, and the selected materials are all 100% High melt strength Borealis polypropylene copolymer RB707CF, its Vicat softening point is 125°C; C is the heat-sealing layer, the choice of material for this layer is: 80% Borealis copolymerized polypropylene RB707CF, 19% Exxon Mobil's elastomer Vistamaxx 6102FL and 1% Schulman opening slip masterbatch FSU105E.

[0035] Such as figure 1 As shown, the specific preparation process is as follows: the above-mentioned A, B, and C three-layer materials are added to the silo 1, heated and melted by the extruder 2, and then extruded from the die head 3. The blow-up ratio is 2.3, and the temperature of the molten material is adjusted. Controlled between 210°C and 230°C, the initial thickness of the film is set to 60 microns, and the film bu...

Embodiment 3

[0037] This embodiment adopts a five-layer material structure, and the structure is composed of A / B / C / D / E (the thickness ratio of each layer is 20%), A and E are surface layers, and the selected materials are all 100% high melt strength The Nordic chemical copolymerized polypropylene RB707CF, the Vicat softening point is 125 °C; the materials of the B and D layers are: 50% of the Nordic chemical copolymerized polypropylene RB707CF and 50% of the Dow chemical metallocene material DOW INNATE ST50; the material of the C layer For: 100% DOW INNATE ST50 metallocene material from Dow Chemical.

[0038] Such as figure 1 As shown, the specific preparation process is as follows: Add the materials of the above five layers of A, B, C, D, and E into the silo 1, heat and melt them through the extruder 2, and then extrude them from the die head 3 with a blow-up ratio of 2.3, and melt The temperature of the material is adjusted and controlled between 210°C and 230°C, the initial thickness o...

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Abstract

The invention relates to a preparation method of an ultra-thin ultra-specular polypropylene aluminum plating base material film. The preparation method comprises the following steps of using a polypropylene material being high in molten mass strength as a surface layer of the film, blowing the film under the condition of 210-230 DEG C, performing blowing to obtain bubbles through an automatic windring, measuring the thickness of the bubbles by a primary thickness measuring module to adjust the thickness, performing clamping and drawing, performing preheating, and performing on-line longitudinal stretching for 3 times or above, wherein the temperature during on-line longitudinal stretching is 20-35 DEG C below the temperature of softening points of the polypropylene material high in moltenmass strength; performing annealing and cooling on the film after on-line longitudinal stretching, performing secondary thickness measurement on the cooled film, performing corona treatment, removingedges, and finally, performing high-speed winding. Through the adoption of the preparation method, one-time shaping is realized, so that the production efficiency is high, the prepared polypropylenealuminum plating base material film has excellent surface ultra-specular effect, the optical performance of the film is improved, the appearance of vacuum aluminum plating is guaranteed, the thicknesslimit of the polypropylene film produced in a conventional casting manner is broken through, and the decrement application of the polypropylene film is realized.

Description

technical field [0001] The invention belongs to the field of film packaging, in particular to a method for preparing an ultra-thin and ultra-mirror aluminum-plated substrate film. Background technique [0002] Aluminized film is a composite flexible packaging material formed by coating the surface of a plastic film (aluminized substrate film) with a very thin layer of metal aluminum by a special process. The most commonly used processing method is the vacuum aluminized method. Metal aluminum is melted and evaporated at high temperature in a high vacuum state, so that the aluminum vapor deposits and accumulates on the surface of the plastic film, so that the surface of the plastic film has a metallic luster. Because it has both the characteristics of plastic film and the characteristics of metal, it is a cheap and beautiful packaging material with excellent performance and strong practicability. [0003] The role of aluminum plating on the surface of the film is to shading a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/02B29C71/02B29K23/00B29L7/00
CPCB29C71/02B29C2071/022B29K2023/12B29L2007/00
Inventor 范亮丰佩川盖文倩粟先荣杨致
Owner 烟台丰福莱薄膜科技有限公司
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