CN102230230A - Method for producing wire drawing woven bag by adopting discarded plastic one-step method - Google Patents

Abstract

The invention discloses a method for producing a wire drawing woven bag by adopting a discarded plastic one-step method. PP and PE discarded plastics are classified, breaking, cleaning, rinsing and mixing are carried out, direct melting and plasticizing are carried out, a thin film is extruded from a die head after double filtration is carried out, water cooling is carried out to form membrane and the membrane is chopped into an ingot wire, the ingot wire is drawn into an ingot, and the ingot can be used by various plastic knitting machines. The original pelletizing and cooking production processes are eliminated, a rinsing automatic process is integrated, sewage is treated and the rinsing water is recycled, energy consumption required by a heating system and all the motive powers in the pelletizing and cooking production process is greatly saved, the production cost is low, and a hidden trouble in safety production in the industry is also eliminated; and meanwhile, the product quality achieves the national standard, and the quality and product quality of regenerated plastic are improved.

Description

A kind of waste or used plastics one-step method wire drawing woven bag production method

One, technical field

The present invention relates to the waste or used plastics process technology, the particularly a kind of PP of recovery, the PE waste or used plastics can be produced the finished silk of woven bag by the one-step method wire drawing production method utilized.

Two, background technology

China's plastic synthetic resin output broke through 4,500 ten thousand tons in 2009, consumed 4,578 ten thousand tons of plastic synthetic resins the same year.China has been genuine plastic synthetic resin big producing country, import big country, consumption big country.It also is when last main trend and guiding that technics of reclaim of plastic waste is utilized again.Utilizing waste or used plastics to produce various industry, agricultural products packaging bag is bigger use approach at present, and Yunnan Province 2009 is actual compiles 7.5 hundred million of cement package bags with moulding, than 2007 newly-increased 1.8 hundred million, increased 1.3 hundred million newly than 2008, amplification reaches 20.9%.Except supplying this outside the province, still there is the sack about 2.5 hundred million to sell to outside the province.The effective sale cement package bags output value was at more than 700,000,000 yuan in 2009.

China's technology for woven plastic packing goods industry all is to adopt traditional waste or used plastics woven bag (two step method) technology at present, not only select materials and require strictness for waste or used plastics, and must be before the wire drawing through granulation, fry the material production process, it is high to repeat the heating power consumption in the production, waste of raw materials is big, this not only repeats power consumption increases labour cost, the most important thing is in the granulation production process, to exist serious potential safety hazard, environmental pollution and poor product quality, the of common occurrence of industrial accident takes place in granulation workshop section in annual each factory, severe environmental pollution is made in a large amount of sewage discharges, and waste or used plastics plastifies through high-temperature fusion in the granulation production process, make granulation gained regenerated plastics particle, the plasticizing of secondary high-temperature fusion is extruded once more in wire drawing is produced, cause waste or used plastics to destroy the plastic molecules structure because of repeating fusion, cause flat filament intensity to reduce, influence the quality of technology for woven plastic packing product.

Three, summary of the invention

The invention provides a kind of waste or used plastics one-step method wire drawing woven bag production method; by one-step method wire drawing novel process; to improve environmental protection, reduction production procedure and to improve automatization level and attach most importance to; reduce the number of the granulation before the wire drawing plasticizing in tradition (two step method) technology, fried the material production process; cleaning, rinsing automation have been realized; highly integrated production technology, and can select most of waste or used plastics for use, it is simple to select materials.

A kind of waste or used plastics one-step method wire drawing woven bag production method is specially:

A. the waste or used plastics classification is handled, and is applicable to PP, PE waste or used plastics;

B. Fen Lei waste or used plastics is sent into broken production line fragmentation, and the engaging friction cleaning machine rotates through the closed circuit cycle high-pressure spiral water of friction cleaning machine then, after first flushing, sieve remove silt, friction makes material softening, enters rinsing bath, the big foreign material precipitation of density;

C. send into mixing bunker after the rinsing, stacking, drainage, the sewage that is produced use the water circulation of rinsing by special sewage disposal, and the mud under the precipitation then send the cement plant as filling raw material;

D. according to the molecular structure of different waste or used plastics and dissolving index, be equipped with masterbatch, colouring agent and modifier and send into mixing bunker, after mixing, directly send into screw rod wire drawing extruder and carry out fusion plastification, extruder screw rotates in the barrel of high temperature, extruding simultaneously advances the waste or used plastics mixture to make its fusion plastification, when the waste or used plastics mixture was by the different humidity province of extruding machine barrel under the binodal screw rod advances, the waste or used plastics mixture was finished modification and fully plasticizing;

E. through not shutting down the dual gate strainer filtering, filter through threeway again;

F. filter the back and extrude from die head and be the film that melts soft state, after water cooling becomes diaphragm, cut apart and be cut into the base silk by the cylinder blade;

G. the base silk is wound into smooth spindle with finished silk by spiral filament forming machine by the baking oven wire drawing under the drawing tension effect of heating, and uses for various plastic braiding machines.

The present invention saves granulation, the stir-fry material production process in tradition (two step method) the wire drawing production technology, integrated rinsing automatic flow, sewage disposal and washings recycle, save granulation significantly, fry heating system and the required energy consumption of every power in the material production process, save 300 degree electricity/tons according to measuring and calculating waste or used plastics one-step method wire drawing novel process than tradition (two step method) drawing process, saved a large amount of labours.Not only production cost is low, but also has renovated the hidden danger of industrial security in producing, and product quality is up to state standards (GB9774-2002) simultaneously: pull-off force 〉=450N/50mm radially; Broadwise pull-off force 〉=450N/50mm has improved the quality and the product quality of regenerated plastics.

Four, the specific embodiment

A kind of waste or used plastics one-step method wire drawing woven bag production method, concrete grammar is integrated into a production line to crushing system and scavenger system exactly, the waste or used plastics that classification in advance is good is sent into crushing system by conveyer, silk expects out directly engaging friction cleaning machine of back, the silk material rotates by the closed circuit cycle high-pressure spiral water of friction cleaning machine, after first flushing, sieve removed silt, friction made material softening, enters the rinsing pond.The big foreign material post precipitation of density, send into mixing bunker by rinsing, behind stacking, the drainage, send into next production unit with conveyer belt

Use airduct molecular structure and the dissolving index of warehouse raw material then according to different waste or used plastics, be equipped with masterbatch, colouring agent and modifier and send into mixing bunker, after mixing, directly send into screw rod wire drawing extruder and carry out fusion plastification, extruder screw rotates in the barrel of high temperature, extruding simultaneously advances the waste or used plastics mixture to make its fusion plastification, when the waste or used plastics mixture was by the different humidity province of extruding machine barrel under the binodal screw rod advances, the waste or used plastics mixture was finished modification and fully plasticizing.

Then through not shutting down the dual gate strainer filtering; filter through threeway again; extrude from die head and to be the film that melts soft state; after cutting apart, the front roll blade is cut into the base silk firmly through water cooling; drawing-off in baking oven or on the drying-plate; handle by drying-plate or the typing of cold roller, under the drawing tension effect, finished silk is wound into smooth spindle by spiral filament forming machine, use for various plastic braiding machines.

Claims (1)

1. waste or used plastics one-step method wire drawing woven bag production method is characterized in that:

A. the waste or used plastics classification is handled;

B. Fen Lei waste or used plastics is sent into broken production line fragmentation, and the engaging friction cleaning machine rotates through the closed circuit cycle high-pressure spiral water of friction cleaning machine then, after first flushing, sieve remove silt, friction makes material softening, enters rinsing bath, the big foreign material precipitation of density;

C. send into mixing bunker after the rinsing, stacking, drainage, the sewage that is produced use the water circulation of rinsing by special sewage disposal, and the mud under the precipitation then send the cement plant as filling raw material;

D. according to the molecular structure of different waste or used plastics and dissolving index, be equipped with masterbatch, colouring agent and modifier and send into mixing bunker, after mixing, directly send into screw rod wire drawing extruder and carry out fusion plastification, extruder screw rotates in the barrel of high temperature, extruding simultaneously advances the waste or used plastics mixture to make its fusion plastification, when the waste or used plastics mixture was by the different humidity province of extruding machine barrel under the binodal screw rod advances, the waste or used plastics mixture was finished modification and fully plasticizing;

E. through not shutting down the dual gate strainer filtering, filter through threeway again;

F. filter the back and extrude from die head and be the film that melts soft state, after water cooling becomes diaphragm, cut apart and be cut into the base silk by the cylinder blade;

G. the base silk is wound into smooth spindle with finished silk by spiral filament forming machine by the baking oven wire drawing under the drawing tension effect of heating, and uses for various plastic braiding machines.