rcpp film for packaging and preparation method thereof

A film and intermediate layer technology, applied in the field of packaging materials, can solve the problems of poor heat sealability and impact resistance, too hard texture, etc., and achieve the effect of improving stiffness, good physical and mechanical properties, and good foreign matter inclusion heat sealing performance

Active Publication Date: 2016-05-11
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing homopolymer PP film is not only too hard in texture, but also has poor heat sealability and impact resistance, which needs to be improved urgently

Method used

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  • rcpp film for packaging and preparation method thereof
  • rcpp film for packaging and preparation method thereof
  • rcpp film for packaging and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation of RCPP film includes the following processes in sequence: extrusion process, cooling and shaping process, thickness measurement process, deflection process, corona process, trimming and winding process.

[0032] a. In the extrusion process: respectively add corona layer resin raw materials, intermediate layer resin raw materials and heat-sealing layer resin raw materials to the three extruder hoppers of the co-extrusion casting machine; the extrusion process adopts three-stage heating, one The temperature of the first-stage extruder is: 210°C, the temperature of the second-stage extruder: 225°C, the temperature of the third-stage extruder: 230°C; the temperature of the die head: 225°C.

[0033] The corona layer 51 is composed of F354NV (block copolymer polypropylene).

[0034] The middle layer 52 is composed of F354NV (block copolymerized polypropylene) and G2806GO (polystyrene-polyethylene / polybutylene-polystyrene), and the weight ratio of F354NV and G...

Embodiment 2

[0044] The preparation of RCPP film includes the following processes in sequence: extrusion process, cooling and shaping process, thickness measurement process, deflection process, corona process, trimming and winding process.

[0045] a. In the extrusion process: respectively add corona layer resin raw materials, intermediate layer resin raw materials and heat-sealing layer resin raw materials to the three extruder hoppers of the co-extrusion casting machine; the extrusion process adopts three-stage heating, one The temperature of the first-stage extruder is: 210°C, the temperature of the second-stage extruder: 225°C, the temperature of the third-stage extruder: 230°C; the temperature of the die head: 225°C.

[0046] The corona layer 51 is composed of F354NV (block copolymer polypropylene).

[0047] The middle layer 52 is composed of F354NV (block copolymerized polypropylene) and G2806GO (polystyrene-polyethylene / polybutylene-polystyrene), and the weight ratio of F354NV and G28...

Embodiment 3

[0057] The preparation of RCPP film includes the following processes in sequence: extrusion process, cooling and shaping process, thickness measurement process, deflection process, corona process, trimming and winding process.

[0058] a. In the extrusion process: add corona layer resin raw materials, intermediate layer resin raw materials and heat-sealing layer resin raw materials to the three barrels of the co-extrusion machine respectively; the extrusion process uses three-stage heating, and the first-stage extruder temperature For: 210°C, second-stage extruder temperature: 225°C, third-stage extruder temperature: 230°C; die head temperature: 225°C.

[0059] The corona layer 51 is composed of F354NV (block copolymer polypropylene).

[0060] The middle layer 52 is composed of F354NV (block copolymerized polypropylene) and G2806GO (polystyrene-polyethylene / polybutylene-polystyrene), and the weight ratio of F354NV and G2806GO is 82:18.

[0061] The heat-sealing layer 53 is co...

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Abstract

The invention belongs to the technical field of packaging materials and particularly relates to a RCPP film for packaging and a preparation method thereof. The RCPP film is composed of a corona layer, an intermediate layer and a heat seal layer which are joined in sequence, wherein the corona layer is a segmented co-polypropylene layer, the intermediate layer is a segmented co-polypropylene-SEBS (thermoplastic elastomer) elastomer composite layer, and the heat seal layer is a segmented co-polypropylene layer. The preparation method of the film comprises the steps of sequentially performing an extruding procedure, a cooling and sizing procedure, a thickness measuring procedure, a deflecting procedure, a corona procedure and an edge cutting and coiling procedure on materials in sequence to obtain the cooking resistant casting polypropylene film, namely, RCPP film. The RCPP film has good thermal viscosity, cooking resistance and good inclusion heat sealability. A packaging bag is prevented from leaking, deforming, coiling or layering after being cooked at high temperature of 135 DEG C; the RCPP film has good physical and mechanical properties, and the packaging deflection can be improved; and the RCPP film is suitable for normal operation of high speed packaging equipment.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to an RCPP film used for packaging and a preparation method thereof. Background technique [0002] CPP film is a polypropylene film produced by a cast extrusion process, also known as unstretched polypropylene film. Compared with polyethylene film, polyester film and polyvinyl chloride film, CPP film not only has lower cost, but also has the characteristics of high gloss, good flatness, balanced vertical and horizontal properties, easy heat sealing and easy metallization treatment. And CPP film can also be aluminized, printed or compounded with other materials after corona treatment, so CPP film is widely used as packaging materials for food, daily necessities and electronic products. [0003] Most of the existing paper packaging CPP films are prepared from homopolymerized PP, mixed with an appropriate amount of slip agent, and then cast, cooled and shaped a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/16B29C69/00
Inventor 叶大青陈付兵汪云辉汪来胜陈旭周黎丽
Owner HUANGSHAN NOVEL
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