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Polypropylene non-woven fabric waste recovery process

A technology for recycling polypropylene non-woven fabrics and waste materials. It is applied in the direction of single-component polypropylene artificial filaments, non-woven fabrics, textiles, and papermaking. Problems such as low density and limited quantity of waste recycling can achieve the effect of improving recycling rate, safe temperature and simple structure

Inactive Publication Date: 2018-12-25
杭州富阳雷讯科技咨询服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to statistics, the waste produced in the production process of non-woven fabrics accounts for about 8% to 15% of the total output. The extrusion volume of the machine is not large, so the amount of waste recycling is greatly limited

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Place 10 rolls of non-woven fabric waste in sequence and place them horizontally on the ground, and draw them to the forced-feeding screw machine on the second floor through the folding boxes and rollers with symmetrical round holes with a diameter of 60 mm on the upper and lower sides of the cuboid;

[0023] (2) The non-woven fabric waste is rewound and extruded by the forced feeding screw machine, and the pulling force is generated to pull the waste material back and forth into the feeder. The waste material is squeezed and torn and sent to the heating tube for heating and melting. The machine adopts a double-thread sawtooth structure, and the thread pitch is 30mm, the screw diameter is 80mm, and the feeding speed is 100m / min. The heating tube is heated by heat conduction oil, and the melting temperature is 250°C;

[0024] (3) The melted waste and the melted raw material particles are mixed evenly at a weight ratio of 0.05:1, and then made into polypropylene fiber...

Embodiment 2

[0028] (1) Place 15 rolls of non-woven fabric waste in sequence and place them horizontally on the ground, and draw them to the forced-feeding screw machine on the second floor through the folding boxes and rollers with symmetrical round holes with a diameter of 80 mm on the upper and lower sides of the cuboid;

[0029] (2) The non-woven fabric waste is rewound and extruded by the forced feeding screw machine, and the pulling force is generated to pull the waste material back and forth into the feeder. The waste material is squeezed and torn and sent to the heating tube for heating and melting. The machine adopts a double-thread sawtooth structure with a thread pitch of 30mm, a screw diameter of 85mm, and a feeding speed of 200m / min. The heating tube is heated by heat conduction oil, and the melting temperature is 260°C;

[0030] (3) The melted waste and the melted raw material particles are mixed evenly at a weight ratio of 0.1:1, and then made into polypropylene fibers throu...

Embodiment 3

[0034] (1) Place 20 rolls of non-woven fabric waste in sequence and place them horizontally on the ground, and draw them to the forced-feeding screw machine on the second floor through the folding boxes and rollers with symmetrical round holes with a diameter of 100 mm on the upper and lower sides of the cuboid;

[0035] (2) The non-woven fabric waste is rewound and extruded by the forced feeding screw machine, and the pulling force is generated to pull the waste material back and forth into the feeder. The waste material is squeezed and torn and sent to the heating tube for heating and melting. The machine adopts a double-thread sawtooth structure, and the thread pitch is 30mm, the screw diameter is 100mm, and the feeding speed is 300m / min. The heating tube is heated by heat conduction oil, and the melting temperature is 280°C;

[0036] (3) The melted waste and the melted raw material particles are mixed evenly at a weight ratio of 0.15:1, and then made into polypropylene fib...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a polypropylene non-woven fabric waste recovery process. The process sequentially comprises the steps that (1), non-woven fabric waste is delivered into a forcing feeding screwrod machine on the second floor through a collecting retracting box and roller tubes; (2), the waste is winded and squeezed by the forcing feeding screw rod machine, and pulling force is generated topull the waste into the feeding machine repeatedly, and the non-woven fabric waste is delivered into a heating tube to be heated and melted after squeezing and tearing are conducted; (3), melted waste material is uniformly mixed with raw material particles according to a certain ratio, and polypropylene fibers are prepared through a spinneret device; (4) the polypropylene fibers on which spinningis conducted are prepared into fiber layer through laying passing through a receiving device, a layer of polypropylene fiber is added to the fiber layer through a conveying belt, and non-woven fabricis prepared through hot pressing rolling; (5) rolled non-woven fabric is placed on a cutting machine to cut into non-woven fabric products with specific width dimensions. By means of the process, dried body mass is improved, and product yield is greatly improved.

Description

technical field [0001] The invention relates to the field of formula and production preparation of polypropylene non-woven fabrics, in particular to a polypropylene non-woven waste recycling process. Background technique [0002] Non-woven fabrics, also known as non-woven fabrics, are composed of directional or random fibers. They are a new generation of environmentally friendly materials with the characteristics of moisture-proof, breathable, flexible, light weight, non-combustible, easy to decompose, low processing energy consumption, and recyclable. Non-woven fabrics have no warp and weft threads, are very convenient to cut and sew, and are light in weight and easy to shape. Therefore, they are widely used in many fields such as medical care, clothing, home decoration, and the automobile industry. Polypropylene pellets are mostly used as raw materials for non-woven fabrics, which are prepared by continuous one-step production such as high-temperature melting, spinning, la...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D04H3/007D04H3/14D01F6/06D01D1/04
CPCD01D1/04D01F6/06D04H3/007D04H3/14
Inventor 刘美华
Owner 杭州富阳雷讯科技咨询服务有限公司
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