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Cementless polypropylene film

A technology of polypropylene film and polypropylene resin, applied in the direction of layered products, synthetic resin layered products, chemical instruments and methods, etc., can solve the problems of process interruption, poor compatibility of polypropylene, and difficult processing, etc., and achieve film High stiffness, good compatibility and easy processing

Inactive Publication Date: 2010-10-06
QUANZHOU LICHANG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are a series of problems in the existing vinyl-based non-adhesive films, including poor compatibility between the vinyl material of the functional layer and the polypropylene of the base layer; The problem of process interruption; and the stiffness of the non-adhesive film of the vinyl functional layer is low, which cannot be applied in some occasions that require film hardness
It is the above problems that limit the application range of the non-adhesive film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 (two-layer coextrusion structure)

[0020] 1) Mix 88% polypropylene resin HP 425J (MFR: 3.1g / 10min), 2% antistatic masterbatch and 10% plasticizer (including 50% petroleum resin) according to the proportion, and send Into the main extruder, the set temperature of the main extruder is 250°C;

[0021] 2) Feed 100% propylene-ethylene copolymer into an auxiliary extruder, the set temperature of the extruder is 230°C, wherein the content of propylene-based monomer in the copolymer is 75%;

[0022] 3) After the raw materials in the two extruders are melted and plasticized, they enter the die head of the same double-layer co-extrusion structure to form a melt of the two-layer co-extrusion structure of the heat-sensitive functional layer / polypropylene resin base layer. Die head The set temperature is 230°C;

[0023] 4) The melt extruded from the die is cooled by the cooling roll and the water tank to form a thick sheet of two-layer co-extruded structure. The tem...

Embodiment 2

[0027] Embodiment 2 (three-layer co-extruded structure, single-sided matting)

[0028] 1) Mix 75% polypropylene resin T 36F (MFR: 2.9g / 10min), 1% complex amine antistatic masterbatch, 20% plasticizer (containing 50% polyethylene wax), and whitening masterbatch After 4% is mixed evenly, it is sent into the main extruder, and the set temperature of the main extruder is 240°C;

[0029] 2) feeding 100% propylene-ethylene copolymer into an auxiliary extruder, the set temperature of the extruder is 230°C, wherein the content of propylene-based monomer in the copolymer is 80%;

[0030] 3) Send 100% of the matting masterbatch into another auxiliary extruder, and the set temperature of the extruder is 220°C;

[0031] 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;

...

Embodiment 3

[0036] Embodiment 3 (five-layer co-extrusion structure, single-sided matting)

[0037] 1) Mix 99.5% polypropylene resin HP 425J (MFR: 3.1g / 10min), 0.5% plasticizer (containing 50% petroleum resin) according to the proportion, and then send it into the main extruder. The set temperature of the machine is 230°C;

[0038] 2) Mix 88% polypropylene resin HP 425J (MFR: 3.1g / 10min), 2% antistatic masterbatch, and 10% plasticizer (including 50% petroleum resin) according to the proportion and send them separately Into two intermediate interlayer extruders, the set temperature of the extruder is 220 °C;

[0039] 3) 100% propylene-ethylene copolymer is fed into an auxiliary extruder, the set temperature of the extruder is 230°C, wherein the content of propylene-based monomer in the copolymer is 92%;

[0040] 4) Send 100% of the matting masterbatch into another auxiliary extruder, and the set temperature of the extruder is 220°C;

[0041] 5) After the raw materials in the five extru...

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Abstract

The invention discloses a cementless polypropylene film, which is a multi-layer coextrusion structure, wherein one surface layer is a thermosensitive functional layer. The film is characterized in that the thermosensitive functional layer is allyl copolymer, wherein the allyl monomer content in the copolymer is at least 75 percent in weight percentage. Compared with the prior cementless polypropylene film, the cementless polypropylene film provided by the invention has easy manufacturing, can basically prevent occurrence of sticking phenomenon when MDO is stretched, has high film deflection with Young modulus more than 1,500Mpa, and has good compatibility with polypropylene of a fundamental layer.

Description

Technical field: [0001] The invention relates to a non-adhesive polypropylene film, in particular to a non-adhesive biaxially stretched film with a heat-sensitive functional layer mainly composed of propylene-based propylene and ethylene copolymer, which can be directly thermally compounded with paper, polyolefin and other materials. Polypropylene film. Background technique: [0002] In order to achieve glue-free compounding with paper, plastic, metal and other materials, the thermal adhesion of vinyl materials is generally used as a heat-sensitive functional layer (or adhesive layer) in the prior art, and the base layer (or core layer) is more Adopt polypropylene, for example: Patent Publication No. CN101148106A, CN101058247A etc. all are based on vinyl. However, there are a series of problems in the existing vinyl-based non-adhesive films, including poor compatibility between the vinyl material of the functional layer and the polypropylene of the base layer; The problem ...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/20B29C69/02B29C47/06B29C47/92B29C55/14B29C48/92
Inventor 吕水抽林小松
Owner QUANZHOU LICHANG PLASTIC