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Biaxial stretching polypropylene film for paper and plastic thermal compounding and preparation method thereof

A technology of polypropylene film and biaxial stretching, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., and can solve problems such as easy discoloration and yellowing of adhesives, affecting the appearance of the film, and increasing production costs. , to achieve the effects of environmental protection, saving production processes, and diversification of varieties

Active Publication Date: 2012-07-04
QUANZHOU LICHANG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, whether it is dry compounding or coating treatment, it means adding an additional production process, which greatly increases the production cost. At the same time, excessive use of adhesives and solvents is not conducive to environmental protection, and the bonding It is easy to change color and turn yellow during the use of the agent, which affects the appearance of the film

Method used

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  • Biaxial stretching polypropylene film for paper and plastic thermal compounding and preparation method thereof
  • Biaxial stretching polypropylene film for paper and plastic thermal compounding and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 (three-layer coextrusion structure)

[0036] 1) After mixing 88% polypropylene resin HP 425 J (MFR: 3.1g / 10min), 2% antistatic masterbatch and 10% plasticizer (containing 50% petroleum resin) according to the proportion, Send it into the main extruder, the working temperature of the main extruder is 200-235°C;

[0037] 2) Feed 100% ethylene-acrylic acid copolymer EAA (acrylic acid monomer content is 9%, MFR is 2.0g / 10min) into an auxiliary extruder, and the working temperature of the extruder is 180-200°C;

[0038] 3) Mix 98.5% polypropylene resin HP 425 J (MFR: 3.1g / 10min) and 1.5% anti-blocking masterbatch ABPP05 and send it into another auxiliary extruder. The working temperature of the extruder is 200 -250°C;

[0039] 4) After the raw materials in the three extruders are melted and plasticized, they enter the same T-shaped die to form a melt with a three-layer co-extrusion structure of adhesive layer / polypropylene resin layer / polypropylene resin layer...

Embodiment 2

[0045] Embodiment 2 (three-layer coextrusion structure)

[0046] 1) After mixing 88% polypropylene resin HP 425 J (MFR: 3.1g / 10min), 2% antistatic masterbatch and 10% plasticizer (containing 50% petroleum resin) according to the proportion, Send it into the main extruder, the set working temperature of the main extruder is 200-235°C;

[0047] 2) Feed 50% ethylene-alpha olefin copolymer (containing 5% petroleum resin) and 50% ethylene-methyl acrylate copolymer (EMA) into an auxiliary extruder, and the setting of the extruder works The temperature is 200-290°C;

[0048] 3) Mix 98.0% polypropylene resin HP 425 J (MFR: 3.1g / 10min) and 2.0% anti-blocking masterbatch ABPP05 and send them to another auxiliary extruder. The setting of the extruder The temperature is 200-250°C;

[0049] 4) After the raw materials in the three extruders are melted and plasticized, they enter the same T-shaped die to form a three-layer co-extrusion melt of adhesive layer / polypropylene resin layer / poly...

Embodiment 3

[0055] Embodiment 3 (five layers of co-extrusion structure)

[0056] 1) After mixing 88% polypropylene resin HP 425 J (MFR: 3.1g / 10min), 2% antistatic masterbatch, and 10% plasticizer (50% petroleum resin) according to the proportion, Send it into the main extruder, the set working temperature of the main extruder is 200-235°C;

[0057] 2) After mixing 88% polypropylene resin HP 425 J (MFR: 3.1g / 10min), 2% antistatic masterbatch, and 10% plasticizer (containing 50% petroleum resin) according to the proportion, Send them into two interlayer extruders respectively, and the set working temperature of the extruders is 200-235°C;

[0058] 3) Send 80% polyethylene and 20% ethylene-sodium (meth)acrylate into an auxiliary extruder, and the set working temperature of the extruder is 200-280°C;

[0059] 4) Send 100% of the matting masterbatch into another auxiliary extruder, and the set working temperature of the extruder is 200-240°C;

[0060] 5) After the raw materials in the five ...

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Abstract

The invention discloses a bidirectional tensile polypropylene film used for paper-plastic composition and a preparation method thereof used for the film; the film is a multi-layer coextrusion structure, wherein, all layers are firmly composed without using glue; the surface layer is a bonding layer; and the material of the bonding layer is polyethylene, vinyl co-polymer or ionic polymer. The invention also provides the preparation method of the bidirectional tensile polypropylene film; the preparation method comprises the steps as follows: a. the raw material of the middle layer is poured into an extruder; b. the raw material of the bonding layer is poured into an auxiliary extruder; c. the raw material of the bottom layer is poured into another auxiliary extruder; d. the raw material is extruded out after being melted and plasticized and confluxed at a T-shaped die head to form the composite layer coextrusion thick sheet; and e. the thick sheet is cooled and formed; subsequently, bidirectional tensioning is carried out; thickness-measuring, trimming and single-surface or dual-surface corona treatment are carried out; the thick sheet is coiled as 12-80 Mum of the multi-layer coextrusion bidirectional tensile polypropylene film at a coiling machine, wherein, the thickness of the bonding layer is 0.8-10 Mum.

Description

Technical field: [0001] The invention relates to a biaxially stretched polypropylene film for paper-plastic thermal compounding and a manufacturing method thereof, in particular to a film with one surface layer being a thermal adhesive layer, the other surface layer being a polypropylene resin layer or a matting layer, and the middle layer being a polypropylene film. A biaxially stretched polypropylene film with an acrylic resin layer that can be directly thermally laminated with paper, printed paper, and other materials and a manufacturing method thereof. Background technique: [0002] The structure of the commercially available three-layer co-extruded biaxially oriented polypropylene film is: polypropylene resin layer / polypropylene resin layer / polypropylene resin layer or matting layer, and the common five-layer co-extruded biaxially oriented polypropylene film The structure of the film is: polypropylene resin layer / polypropylene resin layer / polypropylene resin layer / polyp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/06B32B27/20B29C69/02B29C47/06B29C47/78B29C47/92B29C55/12B29K23/00B29C48/08B29C48/91B29C48/92
CPCB29C48/92B29C2948/92704B29C48/08B29C48/832B29C48/91B29C48/914B29C48/919B29C2948/92152B29C2948/92428B29C2948/92647B29C2948/92895B29C2948/92923
Inventor 王秀京吕达民
Owner QUANZHOU LICHANG PLASTIC