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Biaxial stretching polypropylene film and preparation method thereof biaxial stretching polypropylene film and preparation method thereof

A polypropylene film, biaxial stretching technology, applied in chemical instruments and methods, flat products, other household appliances, etc., can solve the problems of adhesives and solvents that are not environmentally friendly, increase production costs, and reduce production processes and varieties. The effect of diversification and reduction of production costs

Inactive Publication Date: 2009-02-11
QUANZHOU LICHANG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 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.

Method used

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  • Biaxial stretching polypropylene film and preparation method thereof biaxial stretching polypropylene film and preparation method thereof
  • Biaxial stretching polypropylene film and preparation method thereof biaxial stretching polypropylene film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 (12 μm three-layer co-extrusion 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 set temperature of the main extruder is 250°C;

[0037] 2) Send 100% ethylene-alpha olefin copolymer into an auxiliary extruder, and the set temperature of the extruder is 230°C;

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

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

Embodiment 2

[0044] Embodiment 2 (three-layer co-extruded structure, single-sided matting)

[0045] 1) 55% polypropylene resin T 36 F (MFR: 2.9g / 10min), 5% antistatic masterbatch, 20% plasticizer (containing 50% polyethylene wax), pearlescent masterbatch 15% and After 5% of the whitening masterbatch is mixed evenly, it is sent into the main extruder, and the set temperature of the main extruder is 200°C;

[0046] 2) Feed 100% polyethylene into an auxiliary extruder, and the set temperature of the extruder is 230°C;

[0047] 3) Send 100% of the matting masterbatch into another auxiliary extruder, and the set temperature of the extruder is 220°C;

[0048] 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 the adhesive layer / polypropylene resin layer / matting layer. The design of the die Set the temperature at 240°C;

[0049] 5) After the melt extruded from the die is cooled by the cooling...

Embodiment 3

[0054] Embodiment 3 (five-layer co-extrusion structure, single-sided matting)

[0055] 1) After mixing 99.5% polypropylene resin HP 425 J (MFR: 3.1g / 10min) and 0.5% plasticizer (containing 50% petroleum resin) evenly according to the proportion, send them into the main extruder, and The set temperature of the extruder is 230°C;

[0056] 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 proportioning ratio, respectively It is sent into two intermediate interlayer extruders, and the set temperature of the extruders is 220°C;

[0057] 3) Send 100% polyethylene-petroleum resin blend into an auxiliary extruder, and the set temperature of the extruder is 200°C;

[0058] 4) Send 100% of the matting masterbatch into another auxiliary extruder, and the set temperature of the extruder is 220°C;

[0059] 5) After the raw materials in the five extruders are melted and plas...

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Abstract

The invention discloses a biaxially oriented polypropylene film which has a composite structure; wherein, one surface is a heat-variable adhesive coating which contains polyolefine with a melting point between 50 to 120 DEG C; the adhesive coating can be directly and thermally composited with paper and polyolefine materials. The invention also provides a preparation method for the biaxially oriented polypropylene film which includes the following technical steps: a, the material of a middle layer is fed into an extruding machine; b, the material of the adhesive coating is fed into an auxiliary extruding machine; c, the material of a bottom layer is fed into another auxiliary extruding machine; d, the materials after melting and plasticization are extruded, converged and then form a composite co-extruded hunch by a T-shaped die head; 3, after the obtained hunch is cooled and shaped, biaxial stretching is then carried out on the hunch; after the processes of thickness detecting, side cutting, single surface or double surface corona discharge, 12 to 80 mum of the biaxially oriented polypropylene film is curled at the location of a winder; wherein, the thickness of the adhesive coating is 0.8 to 10 mum.

Description

Technical field: [0001] The present invention relates to a kind of biaxially stretched polypropylene film and its manufacture method, especially relate to a kind of surface layer is adhesive layer, another surface layer is polypropylene resin layer or dull layer, middle layer is polypropylene resin layer and can be combined with The invention relates to a biaxially stretched polypropylene film which is directly thermally compounded with paper and polyolefin materials and a manufacturing method thereof. Background technique: [0002] The common three-layer co-extruded biaxially oriented polypropylene film currently available in the market has the following structure: polypropylene resin layer / polypropylene resin layer / polypropylene resin layer or matte layer. The structure of a common five-layer co-extruded biaxially oriented polypropylene film is: polypropylene resin layer / polypropylene resin layer / polypropylene resin layer / polypropylene resin layer / polypropylene resin layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L23/12B29C55/18B29C65/40B29D7/01B32B27/32C08L57/02
Inventor 王秀京吕达民
Owner QUANZHOU LICHANG PLASTIC
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