CN111363376A - Processing technology for producing woven bag by utilizing recovered waste - Google Patents

Processing technology for producing woven bag by utilizing recovered waste Download PDF

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Publication number
CN111363376A
CN111363376A CN202010214381.9A CN202010214381A CN111363376A CN 111363376 A CN111363376 A CN 111363376A CN 202010214381 A CN202010214381 A CN 202010214381A CN 111363376 A CN111363376 A CN 111363376A
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temperature
cutting
woven
descend
parts
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王耀明
刘娟
李芳�
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Jieshou Juyi Packaging Material Co ltd
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Jieshou Juyi Packaging Material Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • B29B7/823—Temperature control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

The invention discloses a processing technique for producing woven bags by utilizing recycled waste, which ensures that a product has high fluidity and high toughness through dynamic vulcanization, the shape and the structure of a blend of the product are more stable, the compatibility of an ethylene-propylene copolymer and a waste gas plastic raw material can be enhanced through the dynamic vulcanization, the high viscosity after the ethylene-propylene copolymer and the waste gas plastic raw material are combined is achieved, the high fluidity of the ethylene-propylene copolymer and the waste gas plastic raw material is also improved, inorganic filler is introduced, the surface treatment of the inorganic filler is carried out by adopting a coupling agent and a heat stabilizer, the affinity between two phases of the material is increased, the interface acting force between the material and the material is effectively improved, the heat stability of a waste additive is finally improved, the rigidity and the dimensional stability of the plastic woven bags are obviously improved, the high-temperature creep is prevented, the peeling strength of the woven bags is improved, the radial breaking force of flat filaments of the, the weft tensile strength is more than or equal to 700N/50 mm.

Description

Processing technology for producing woven bag by utilizing recovered waste
Technical Field
The invention relates to the technical field of woven bag production and processing, in particular to a processing technology for producing a woven bag by utilizing recovered waste materials.
Background
The waste plastics in China mainly comprise plastic films, plastic wires, woven products, foamed plastics, plastic packing cases and containers, daily plastic products, plastic bags, agricultural mulching films and the like. With the increasing consumption of plastic products, the amount of waste plastic is also increasing. The waste plastic products are taken as one of petroleum derivatives, are recycled and reused, are highly concerned all over the world, and become recyclable reclaimed materials through processes of crushing, granulating, modifying and the like after the waste plastics are classified by manual screening, so that various plastic products are produced, not only is the effective utilization of waste resources realized, but also the environmental pollution is effectively reduced.
Patent document CN201310473328.0 discloses a method for producing woven bag flat filament by using waste plastic, which is characterized in that a small amount of antioxidant, auxiliary antioxidant and light stabilizer are added in proportion during blending, so as to reasonably improve the tensile strength and color of the flat filament material, the main components are industrial 2, 6-di-tert-butylphenol, β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid, phosphite ester, benzotriazole, paraffin, titanium dioxide, epoxy resin and calcium stearate, the main raw materials include waste plastics such as mulching films, packaging materials, beverage bottles and plastic products containing polyethylene and polypropylene, and after mixing and melting, the raw materials are fully polymerized into composite polyethylene and polypropylene copolymers, so that the woven bag flat filament produced by the method has excellent characteristics, saves working procedures, manpower and energy consumption, reasonably improves the tensile strength and texture of the flat filament material, has a radial breaking force not less than or equal to 450N/50mm, has a breaking force not less than 450N/50mm, and has a cutting force not more than national standards when the existing cutting equipment is used for cutting woven bags, the woven bags are not easy to adjust the cutting precision of the woven bags, and the woven bags are not easy to cut when the woven bags are cut.
Disclosure of Invention
The invention aims to provide a processing technology for producing woven bags by utilizing recycled waste, which solves the following technical problems: (1) by using ethylene-propylene copolymer and waste gas plastic raw materials and adopting an extrusion two-stage production process, the molecular structure form is changed, under the action of a cross-linking agent, through the design of a sufficient product laminated structure, the product has high fluidity and high toughness through dynamic vulcanization, the form and the structure of a blend of the ethylene-propylene copolymer and the waste gas plastic raw materials are more stable, the compatibility of the ethylene-propylene copolymer and the waste gas plastic raw materials can be enhanced through the dynamic vulcanization, the high viscosity of the combined ethylene-propylene copolymer and the waste gas plastic raw materials is achieved, the high fluidity of the combined ethylene-propylene copolymer and the waste gas plastic raw materials is improved, the affinity between two phases of the materials is increased through introducing the inorganic filler and adopting the coupling agent and the heat stabilizer to treat the surface of the inorganic filler, the interface acting force between the materials is effectively improved, the heat stability of a waste additive is finally improved, the rigidity and, according to the test of GB 9774-2002, the prepared flat filament for producing the woven bag by utilizing the recycled waste has the radial tensile strength of more than or equal to 700N/50mm and the latitudinal tensile strength of more than or equal to 700N/50mm, and the technical problem that the woven bag produced by waste plastic in the prior art is low in peel strength is solved; (2) the woven bag is placed on a conveying mechanism of cutting equipment, a second air cylinder piston rod on a support frame drives a right-angle support to move horizontally, so that a translation plate is driven to move horizontally, a cutting plate is driven to move between two connecting plates through the two translation plates, the position of the cutting plate is adjusted, a first motor is started, a first motor output shaft drives one guide rod to rotate through a first belt wheel set, the guide rod drives the rest tension rods, the limiting rods and the guide rod to rotate through the cooperation of a steel wire rope wheel and a steel wire, so that the woven plastic woven bag is driven to be conveyed on the cutting plate, the position of the cutting plate of the cutting equipment can be automatically adjusted, the height of the tension rods can be adjusted through the arrangement of the tension rods, the support plate, the first air cylinder and the telescopic rod, the steel wire can be conveniently tensioned and adjusted, a second motor output shaft in a fixed box is, The nut drives the middle-placed plate to descend, the sliding blocks on two sides of the middle-placed plate slide downwards along the sliding rails and drive the lifting connecting plates on two sides to descend, the two lifting connecting plates drive the cross beam to descend, the cross beam drives the side arms on two sides to descend, the piston rods of the fourth air cylinders on the side arms contract to drive the second connecting plates to descend, the second connecting plates drive the connecting blocks to descend through the second lifting rods, and further drive the lifting frame to descend; (3) through driving spacing contact plastic woven sack on the crane, the third motor passes through second band pulley group drive slider two and slides on another slide rail, and then drive cutting frame horizontal migration, adjust cutting blade's cutting position, adjust two spacing positions on the crane through the movable block after the cutting position adjustment, adjust two spacing to plastic woven sack cutting position both sides, fasten the movable block through fastening bolt, through this structure, spacing on the crane can press braided sack cutting position both sides, the condition that both sides were rolled up when effectively preventing the braided sack cutting, solve among the prior art braided sack cutting equipment the braided sack of cutting position both sides when cutting the braided sack and easily roll over and influence the technical problem of braided sack cutting precision.
The purpose of the invention can be realized by the following technical scheme:
a processing technology for producing woven bags by utilizing recycled waste comprises the following steps:
the method comprises the following steps: weighing 100-150 parts of waste additive, 2-3 parts of LLDPE resin, 2-3 parts of PP resin and 0.02-0.03 part of ultraviolet absorbent by weight parts, adding into a mixer, and uniformly mixing at 60-100 ℃ to obtain a mixture;
step two: adding the mixture into an extruder at a feeding speed of 125kg/min for extrusion, and cooling and forming to obtain a coating woven fabric for producing woven bags;
step three: preheating a preheating roller to 60-80 ℃, adjusting the temperature of a cooling roller to 30-50 ℃, and then putting the coating woven cloth for producing the woven bag obtained in the step two into a screw extruder to extrude by taking the gap between the film and the coating woven cloth for producing the woven bag as 80-140 mm to obtain flat filaments of the coating woven cloth for the woven bag;
step four: weaving the flat filaments of the woven bag coating cloth obtained in the third step by using a flat die method by using a cylinder weaving machine, placing the woven bag on a conveying mechanism of cutting equipment, driving a right-angle support to horizontally move by a second cylinder piston rod on a support frame, further driving a translation plate to horizontally move, driving a cutting plate to move between two connecting plates by two translation plates, adjusting the position of the cutting plate, turning on a first motor, driving one of guide rods to rotate by a first motor output shaft through a first pulley group, driving the other tension rods, limiting rods and guide rods to rotate by the guide rods in a matching way of a steel wire rope wheel and a steel wire, further driving the woven plastic woven bag to be conveyed on the cutting plate, driving a middle plate to descend by a second motor output shaft in a fixed box through a lead screw and a nut during cutting, sliding down one sliding rail of sliding blocks on two sides of the middle plate, and driving lifting connecting plates on two sides to descend, the two lifting connecting plates drive the cross beam to descend, the cross beam drives the side arms at two sides to descend, the fourth cylinder piston rods on the side arms contract to drive the second connecting plates to descend, the second connecting plates drive the connecting blocks to descend through the second lifting rods so as to drive the lifting frame to descend, and further drive the limiting strips on the lifting frame to contact with the plastic woven bags, the third motor drives the sliding block II to slide on another sliding rail through the second belt pulley group so as to drive the cutting frame to horizontally move, the cutting position of the cutting blade is adjusted, the positions of the two limiting strips on the lifting frame are adjusted through the movable block after the cutting position is adjusted, the two limiting strips are adjusted to two sides of the cutting position of the plastic woven bags, the movable block is fastened through the fastening bolt, the third cylinder piston rods drive the first connecting strips to descend, the first connecting strips drive the first lifting rods, and sewing the cut woven bag to obtain a finished woven bag.
The method comprises the following steps of ① weighing 22-30 parts of waste plastic raw materials, 5-40 parts of ethylene-propylene copolymers, 50-60 parts of inorganic fillers, 1-2 parts of lubricants, 1-2 parts of coupling agents, 1-2 parts of heat stabilizers, 0.25-0.31 part of cross-linking agents, 0.2-1 part of antioxidants and 0.2-1 part of light stabilizers, ② adding the inorganic fillers, the heat stabilizers and the coupling agents into a high-speed mixer, mixing and activating for 10-20 min at the temperature of 100-120 ℃ to obtain activated inorganic fillers, ③ adding the ethylene-propylene copolymers, the cross-linking agents, the lubricants, the waste plastic raw materials, the antioxidants, the light stabilizers and the activated inorganic fillers into a high-speed mixer, mixing for 10-20 min at the temperature of 100-120 ℃ to obtain an alloy material, ④ adding the alloy material into a double-screw extruder at the feeding speed of 120kg/min for extrusion, then sequentially cooling, forming and cutting to prepare the waste plastic raw materials, wherein the waste additives are 1-2 mm in particle size, the temperature of 100-120 ℃, the length of the double-screw extruder is 10-20 min, the temperature of the double screw extruder is 230-120 ℃, the temperature of the melt-220 ℃ and the melt-220-2-220-2-3-220-3-MPa zone of the extruder, and the melt-mixing zone is the following parameters.
Further, in the step ①, the melt flow rate of the ethylene-propylene copolymer is 120g/10min, and the ethylene-propylene copolymer is prepared by using the ethylene monomer and the propylene monomer as raw materials, using the metallocene catalyst as a catalyst, and according to the molar ratio of the ethylene monomer to the propylene monomer being 1: 1.
Further, in the step ①, the inorganic filler is calcite powder with a particle size of 1250 meshes, the lubricant is low-molecular polyethylene wax, the coupling agent is rare earth aluminate, and the heat stabilizer is stearic acid.
Further, the cross-linking agent in the step ① is dicumyl peroxide, the antioxidant is 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, and the light stabilizer is bis-salicylic acid bisphenol a ester.
Further, the production conditions of the extruder in the second step are as follows: the melt pressure of melt blending is 4-10 MPa, the diameter of a screw of an extruder is 90mm, the current of a main motor is 90-95A, the length-diameter ratio is 18-30, the compression ratio is 3.6-3.8, the blow-up ratio is 1.5-2.5, the gap of a circular neck mold is 0.7-1.0 mm, the temperature of a machine head connector is 210-220 ℃, the temperature of the neck mold is 215-225 ℃, the temperature of cooling water is 15-25 ℃, the rotating speed of the screw is 47-48 rpm, the current of an auxiliary agent is 90-95A, the drawing magnification is 7.2, and the temperature of a machine barrel of the extruder is four regions: 190-195 ℃ in the first zone, 195-205 ℃ in the second zone, 205-220 ℃ in the third zone and 210-220 ℃ in the fourth zone.
Further, the conditions of the screw extruder in the third step are as follows: the diameter of the screw is 65mm, the power of a main motor is 25kW, the length-diameter ratio is 32, a spiral die head is adopted, a connector is 200-210 ℃, the head is 200-210 ℃, the rotating speed of the screw is 60-70 rpm, the traction speed is 100-150 m/min, and the temperature of the barrel of the screw extruder is respectively three regions: the temperature of the first zone is 170-195 ℃, the temperature of the second zone is 190-195 ℃ and the temperature of the third zone is 200-210 ℃.
Further, the conditions of the cylinder knitting machine in the fourth step are as follows: the machine head temperature is 240-250 ℃, the blowing-up ratio is 1.2, the screw rotating speed is 40rpm, the traction speed is 70-90 m/min, the hot stretching temperature is 100-110 ℃, the retention time is 1.2-1.5 s, the stretching multiple is 5 times, and the temperature of the cylinder of the cylindrical braiding machine is three zones respectively: the temperature of the first zone is 160-180 ℃, the temperature of the second zone is 220-230 ℃, and the temperature of the third zone is 230-250 ℃.
The invention has the beneficial effects that:
(1) the invention relates to a processing technique for producing woven bags by utilizing recycled waste, which changes the molecular structure form by using ethylene-propylene copolymer and waste plastic raw materials and adopting an extrusion two-stage production technique, leads the product to have high fluidity and high toughness by full product layer structure design under the action of a cross-linking agent and dynamic vulcanization, leads the form and the structure of a blend to be more stable, can strengthen the compatibility of the ethylene-propylene copolymer and the waste plastic raw materials by the dynamic vulcanization, achieves the high viscosity after the ethylene-propylene copolymer and the waste plastic raw materials are combined, improves the high fluidity, increases the affinity between two phases of the material by introducing inorganic filler and adopting the coupling agent and a heat stabilizer to treat the surface of the inorganic filler, effectively improves the interface acting force between the inorganic filler and the material, finally improves the thermal stability of a waste additive and obviously improves the rigidity of the plastic woven bags, the size stability is high, the high-temperature creep is prevented, the peeling strength of the woven bag is improved, and the radial breaking force of the flat filaments and the weft breaking force of the woven bag produced by utilizing the recycled waste are not less than 700N/50mm and not less than 700N/50mm according to the GB 9774-2002.
(2) The woven bag after weaving is placed on a conveying mechanism of cutting equipment, a second air cylinder piston rod on a support frame drives a right-angle support to move horizontally, and then drives a translation plate to move horizontally, a cutting plate is driven to move between two connecting plates through two translation plates, the position of the cutting plate is adjusted, a first motor is opened, a first motor output shaft drives one of guide rods to rotate through a first belt wheel set, the guide rod drives other tensioning rods, a limiting rod and a guide rod to rotate through the cooperation of a steel wire rope wheel and a steel wire, and then the woven plastic woven bag is driven to be conveyed on the cutting plate, the position of the cutting plate of the cutting equipment can be automatically adjusted, the height of the tensioning rod can be adjusted through the arrangement of the tensioning rod, the support plate, the first air cylinder and a telescopic rod, tensioning adjustment of the steel wire is facilitated, a second motor output shaft in a fixed box is, The nut drives the middle-placed plate to descend, the sliding blocks on the two sides of the middle-placed plate slide downwards along the sliding rails and drive the lifting connecting plates on the two sides to descend, the two lifting connecting plates drive the cross beam to descend, the cross beam drives the side arms on the two sides to descend, the piston rods of the fourth cylinders on the side arms contract to drive the second connecting plates to descend, the second connecting plates drive the connecting blocks to descend through the second lifting rods, and further drive the lifting frame to descend, and through the structure, the lifting frame can position the woven bag, so that the height of the cutting blade lifting frame can be conveniently adjusted;
(3) through driving spacing contact plastic woven sack on the crane, the third motor passes through second band pulley group drive slider two and slides on another slide rail, and then drive cutting frame horizontal migration, adjust cutting blade's cutting position, adjust two spacing positions on the crane through the movable block after the cutting position adjustment, adjust two spacing to plastic woven sack cutting position both sides, fasten the movable block through fastening bolt, through this structure, spacing on the crane can press braided sack cutting position both sides, the condition that both sides were rolled up when effectively preventing the braided sack cutting.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the cutting apparatus of the present invention;
FIG. 2 is a schematic view of the transfer mechanism of the present invention;
fig. 3 is an installation view of the tension rod of the present invention;
FIG. 4 is an installation view of the right angle support of the present invention;
FIG. 5 is an internal structural view of the fixing case of the present invention;
FIG. 6 is an internal structural view of the cross beam of the present invention;
FIG. 7 is a schematic structural view of a side arm of the present invention;
FIG. 8 is an installed view of the cutting blade of the present invention;
figure 9 is a structural view of the crane of the invention
In the figure: 1. an operation table; 2. a transport mechanism; 3. a fixed box; 4. a transfer frame; 5. a guide bar; 6. a first motor; 61. a first pulley set; 7. a tension rod; 8. a support plate; 9. a first cylinder; 10. a telescopic rod; 11. supporting at a right angle; 12. a fixing plate; 13. a support frame; 14. a connecting plate; 15. cutting the board; 16. a translation plate; 17. a limiting rod; 18. a second cylinder; 19. a second motor; 20. a middle-arranged plate; 21. lifting the connecting plate; 22. a cross beam; 23. a third motor; 24. a second pulley set; 25. a cutting frame; 26. a third cylinder; 261. a first connecting piece; 262. a first lifting rod; 27. a cutting blade; 28. a side arm; 29. a fourth cylinder; 291. a second connecting sheet; 292. a second lifting rod; 30. connecting blocks; 31. a lifting frame; 32. a movable block; 321. fastening a bolt; 33. and (5) a limiting strip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to FIGS. 1-9
Example 1
A processing technology for producing woven bags by utilizing recycled waste comprises the following steps:
the method comprises the following steps: weighing 100 parts of waste additive, 2 parts of LLDPE resin, 2 parts of PP resin and 0.02 part of ultraviolet absorber in parts by weight, adding into a mixer, and uniformly mixing at 60 ℃ to obtain a mixture;
step two: adding the mixture into an extruder at a feeding speed of 125kg/min for extrusion, and cooling and forming to obtain a coating woven fabric for producing woven bags;
step three: preheating the temperature of a preheating roller to 60 ℃, adjusting the temperature of a cooling roller to 30 ℃, and then putting the coating woven cloth for producing the woven bag obtained in the step two into a screw extruder to extrude by taking the gap from the mouth film to the coating woven cloth for producing the woven bag as 80mm to obtain flat filaments of the coating woven cloth for the woven bag;
step four: weaving the flat filaments of the woven bag coating cloth obtained in the third step by using a flat die method by using a cylinder weaving machine, placing the woven bag on a conveying mechanism of cutting equipment, driving a right-angle support to horizontally move by a second cylinder piston rod on a support frame, further driving a translation plate to horizontally move, driving a cutting plate to move between two connecting plates by two translation plates, adjusting the position of the cutting plate, turning on a first motor, driving one of guide rods to rotate by a first motor output shaft through a first pulley group, driving the other tension rods, limiting rods and guide rods to rotate by the guide rods in a matching way of a steel wire rope wheel and a steel wire, further driving the woven plastic woven bag to be conveyed on the cutting plate, driving a middle plate to descend by a second motor output shaft in a fixed box through a lead screw and a nut during cutting, sliding down one sliding rail of sliding blocks on two sides of the middle plate, and driving lifting connecting plates on two sides to descend, the two lifting connecting plates drive the cross beam to descend, the cross beam drives the side arms at two sides to descend, the fourth cylinder piston rods on the side arms contract to drive the second connecting plates to descend, the second connecting plates drive the connecting blocks to descend through the second lifting rods so as to drive the lifting frame to descend, and further drive the limiting strips on the lifting frame to contact with the plastic woven bags, the third motor drives the sliding block II to slide on another sliding rail through the second belt pulley group so as to drive the cutting frame to horizontally move, the cutting position of the cutting blade is adjusted, the positions of the two limiting strips on the lifting frame are adjusted through the movable block after the cutting position is adjusted, the two limiting strips are adjusted to two sides of the cutting position of the plastic woven bags, the movable block is fastened through the fastening bolt, the third cylinder piston rods drive the first connecting strips to descend, the first connecting strips drive the first lifting rods, and sewing the cut woven bag to obtain a finished woven bag.
The method comprises the following steps of ① weighing 22 parts by weight of waste plastic raw materials, 5 parts by weight of ethylene-propylene copolymer, 50 parts by weight of inorganic filler, 1 part by weight of lubricant, 1 part by weight of coupling agent, 1 part by weight of heat stabilizer, 0.25 part by weight of cross-linking agent, 0.2 part by weight of antioxidant and 0.2 part by weight of light stabilizer, ② adding the inorganic filler, the heat stabilizer and the coupling agent into a high-speed mixer, mixing and activating for 10min at the temperature of 100 ℃ to obtain activated inorganic filler, ③ adding the ethylene-propylene copolymer, the cross-linking agent, the lubricant, the waste plastic raw materials, the antioxidant, the light stabilizer and the activated inorganic filler into a high-speed mixer, mixing for 10min at the temperature of 100 ℃ to obtain an alloy material, ④, adding the alloy material into a double-screw extruder at the feeding speed of 120kg/min for extrusion, then sequentially cooling, molding and cutting to prepare particles with the particle size of 1mm and the length of 2mm, and the waste plastic, wherein the waste plastic raw materials are extruded from a first barrel, the first-second-third-stage, the first-stage, the second-stage, the third-stage is a stage, the third-stage, the process is characterized in which is characterized in that the process, the process is carried out, the process is carried out, the steps of extruding process, wherein the process, the process comprises the steps of extruding process, the steps of extruding process are respectively, the steps of extruding process, the steps of extruding process are respectively, the steps of extruding the processes, the steps are respectively, the processes, the steps of extruding, the steps are respectively, the processes, the steps are respectively, the steps of extruding, the steps are respectively.
The radial tensile strength of the flat filaments and the weft tensile strength of the woven bags produced by utilizing the recycled waste materials in the embodiment 1 are respectively more than or equal to 650N/50mm and more than or equal to 650N/50 mm.
Example 2
A processing technology for producing woven bags by utilizing recycled waste comprises the following steps:
the method comprises the following steps: weighing 150 parts of waste additive, 3 parts of LLDPE resin, 3 parts of PP resin and 0.03 part of ultraviolet absorber in parts by weight, adding into a mixer, and uniformly mixing at 100 ℃ to obtain a mixture;
step three: preheating a preheating roller to 80 ℃, adjusting the temperature of a cooling roller to 50 ℃, and then putting the coating woven cloth for producing the woven bag obtained in the step two into a screw extruder to extrude with the gap from the mouth film to the coating woven cloth for producing the woven bag being 140mm to obtain flat filaments of the coating woven cloth for the woven bag;
step two and step four are the same as example 1;
the method comprises the following steps of ①, weighing 30 parts of waste plastic raw materials, 40 parts of ethylene-propylene copolymer, 60 parts of inorganic filler, 2 parts of lubricant, 2 parts of coupling agent, 2 parts of heat stabilizer, 0.31 part of cross-linking agent, 1 part of antioxidant and 1 part of light stabilizer according to parts by weight, ②, adding the inorganic filler, the heat stabilizer and the coupling agent into a high-speed mixer, mixing and activating for 20min at 120 ℃ to obtain activated inorganic filler, ③, adding the ethylene-propylene copolymer, the cross-linking agent, the lubricant, the waste plastic raw materials, the antioxidant, the light stabilizer and the activated inorganic filler into a high-speed mixer, mixing for 20min at 120 ℃ to obtain an alloy material, ④, adding the alloy material into a double-screw extruder at a feeding speed of 120kg/min to extrude, then sequentially cooling, forming and cutting to prepare particles with a diameter of 2mm and length of 3mm, wherein the melt-extrusion-head temperature zone temperature of the first-melt-extrusion-forming machine is that the first-screw-barrel-blowing machine head is a first-blowing machine, the first-blowing machine head-blowing machine, the first-blowing machine, the melt-blowing machine, wherein the melt-blowing machine is used for 20min, the melt-blowing machine, the blowing machine-blowing machine is used for 20min, the melt.
The radial tensile strength of the flat filaments and the weft tensile strength of the woven bags produced by utilizing the recycled waste materials in the embodiment 2 are respectively more than or equal to 700N/50 mm.
The cutting equipment comprises an operation table 1, a conveying mechanism 2 and a fixed box 3, wherein the conveying mechanism 2 is installed at the top of the operation table 1, the conveying mechanism 2 comprises two conveying frames 4, the two conveying frames 4 are symmetrically installed at two sides of the top of the operation table 1, guide rods 5 are installed on the conveying frames 4 in a rotating mode, one guide rod 5 is connected with a first motor 6 through a first belt pulley group 61 in a transmission mode, a limiting rod 17 is arranged on each conveying frame 4 in a rotating mode, two first air cylinders 9 are installed on each conveying frame 4, the tops of piston rods of the two first air cylinders 9 are connected with the bottom of a supporting plate 8, two telescopic rods 10 are installed at the bottom of the supporting plate 8, the telescopic rods 10 are installed on the conveying frames 4, tensioning rods 7 are installed at two sides of the top of the supporting plate 8 in a rotating mode through rod seats, two supporting frames 13, the end part of a piston rod of the second cylinder 18 is connected with a right-angle support 11, the right-angle support 11 is connected with a fixed plate 12 in a sliding manner, the two right-angle supports 11 are fixedly connected with the lower surfaces of translation plates 16, two connecting plates 14 are arranged between the two conveying frames 4, a cutting plate 15 is movably arranged between the two connecting plates 14, and the two translation plates 16 are respectively arranged at two sides of the cutting plate 15;
the guide rod 5, the tensioning rod 7 and the telescopic rod 10 are provided with steel wire rope wheels at positions close to two sides, and the guide rod 5, the tensioning rod 7 and the steel wire rope wheels at two sides of the telescopic rod 10 are in transmission connection through two steel wires;
the fixed box 3 is arranged at the top of the operation table 1, a second motor 19 is arranged in the fixed box 3, the output shaft of the second motor 19 is connected with a middle-arranged plate 20 through a screw rod and a nut in a transmission way, two sides of the middle-arranged plate 20 are connected with slide rails at two sides of the fixed box 3 through a first slide block in a sliding way, two sides of the middle-arranged plate 20 are connected with lifting connecting plates 21 through a first slide block, the two lifting connecting plates 21 are fixedly connected with one side of a cross beam 22, a third motor 23 is arranged on the cross beam 22, the third motor 23 is connected with a second slide block through a second belt wheel set 24 in a transmission way, the second slide block slides on the other slide rail, the second slide block is connected with a cutting frame 25, two third air cylinders 26 are arranged on the cutting frame 25, a first connecting sheet 261 is arranged on piston rods of the third air cylinders 26, two first lifting rods 262, install fourth cylinder 29 on side arm 28, install second connection piece 291 on the fourth cylinder 29 piston rod, two second lifter 292 are installed to second connection piece 291 lower surface both sides, connecting block 30 is installed to second lifter 292 bottom, four connecting block 30 symmetries are installed in crane 31 both sides, slidable mounting has two spacing 33 on crane 31, movable block 32 is all installed to spacing 33 both sides, spacing 33 is through two movable block 32 sliding connection crane 31 both sides, install fastening bolt 321 on the movable block 32.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.

Claims (9)

1. A processing technology for producing woven bags by utilizing recycled waste is characterized by comprising the following steps:
the method comprises the following steps: weighing 100-150 parts of waste additive, 2-3 parts of LLDPE resin, 2-3 parts of PP resin and 0.02-0.03 part of ultraviolet absorbent by weight parts, adding into a mixer, and uniformly mixing at 60-100 ℃ to obtain a mixture;
step two: adding the mixture into an extruder at a feeding speed of 125kg/min for extrusion, and cooling and forming to obtain a coating woven fabric for producing woven bags;
step three: preheating a preheating roller to 60-80 ℃, adjusting the temperature of a cooling roller to 30-50 ℃, and then putting the coating woven cloth for producing the woven bag obtained in the step two into a screw extruder to extrude by taking the gap between the film and the coating woven cloth for producing the woven bag as 80-140 mm to obtain flat filaments of the coating woven cloth for the woven bag;
step four: weaving the flat filaments of the woven bag coating cloth obtained in the third step by using a flat die method by using a cylinder weaving machine, placing the woven bag on a conveying mechanism of cutting equipment, driving a right-angle support to horizontally move by a second cylinder piston rod on a support frame, further driving a translation plate to horizontally move, driving a cutting plate to move between two connecting plates by two translation plates, adjusting the position of the cutting plate, turning on a first motor, driving one of guide rods to rotate by a first motor output shaft through a first pulley group, driving the other tension rods, limiting rods and guide rods to rotate by the guide rods in a matching way of a steel wire rope wheel and a steel wire, further driving the woven plastic woven bag to be conveyed on the cutting plate, driving a middle plate to descend by a second motor output shaft in a fixed box through a lead screw and a nut during cutting, sliding down one sliding rail of sliding blocks on two sides of the middle plate, and driving lifting connecting plates on two sides to descend, the two lifting connecting plates drive the cross beam to descend, the cross beam drives the side arms at two sides to descend, the fourth cylinder piston rods on the side arms contract to drive the second connecting plates to descend, the second connecting plates drive the connecting blocks to descend through the second lifting rods so as to drive the lifting frame to descend, and further drive the limiting strips on the lifting frame to contact with the plastic woven bags, the third motor drives the sliding block II to slide on another sliding rail through the second belt pulley group so as to drive the cutting frame to horizontally move, the cutting position of the cutting blade is adjusted, the positions of the two limiting strips on the lifting frame are adjusted through the movable block after the cutting position is adjusted, the two limiting strips are adjusted to two sides of the cutting position of the plastic woven bags, the movable block is fastened through the fastening bolt, the third cylinder piston rods drive the first connecting strips to descend, the first connecting strips drive the first lifting rods, and sewing the cut woven bag to obtain a finished woven bag.
2. The processing technology for producing the woven bag by using the recycled waste is characterized in that the waste additive in the first step is prepared by ① parts, 22-30 parts by weight of waste plastic raw materials, 5-40 parts by weight of ethylene-propylene copolymer, 50-60 parts by weight of inorganic filler, 1-2 parts by weight of lubricant, 1-2 parts by weight of coupling agent, 1-2 parts by weight of heat stabilizer, 0.25-0.31 part by weight of crosslinking agent, 0.2-1 part by weight of antioxidant and 0.2-1 part by weight of light stabilizer, ② parts by weight of inorganic filler, heat stabilizer and coupling agent are added into a high-speed mixer and mixed and activated for 10-20 min at the temperature of 100-120 ℃ to obtain activated inorganic filler, ③ parts by weight of ethylene-propylene copolymer, crosslinking agent, lubricant, waste plastic raw materials, antioxidant, light stabilizer and activated inorganic filler are added into the high-speed mixer and mixed for 10-20 min at the temperature of 100-120 ℃ to obtain an alloy material, ④ parts by adding the alloy material into the high-speed mixer at the feeding speed of 120kg/min, then the waste material is prepared, the mixing process is carried out at the temperature of 260-220 ℃ and the temperature of a double screw extruder, the temperature of 250-220 mm, the temperature of the melt-220 ℃, the melt-2-5 mm, the temperature of the extrusion zone, the melt-5-220-2-5-2-5-2-5-3.
3. The process for manufacturing woven bags from recycled scraps as claimed in claim 2, wherein the melt flow rate of the ethylene-propylene copolymer in the step ① is 120g/10min, and the ethylene-propylene copolymer is prepared by using ethylene monomers and propylene monomers as raw materials, using a metallocene catalyst as a catalyst, and using the molar ratio of the ethylene monomers to the propylene monomers as 1: 1.
4. The process for manufacturing the woven bag using the recycled wastes as claimed in claim 2, wherein the inorganic filler in the step ① is calcite powder with a particle size of 1250 meshes, the lubricant is low molecular polyethylene wax, the coupling agent is rare earth aluminate, and the heat stabilizer is stearic acid.
5. The process for manufacturing woven bags from recycled scraps as claimed in claim 2, wherein the crosslinking agent in step ① is dicumyl peroxide, the antioxidant is 1,3, 5-trimethyl-2, 4, 6-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, and the light stabilizer is bis-salicylic acid bisphenol a ester.
6. The processing technology for producing the woven bag by using the recycled waste material as claimed in claim 1, wherein the production conditions of the extruder in the second step are as follows: the melt pressure of melt blending is 4-10 MPa, the diameter of a screw of an extruder is 90mm, the current of a main motor is 90-95A, the length-diameter ratio is 18-30, the compression ratio is 3.6-3.8, the blow-up ratio is 1.5-2.5, the gap of a circular neck mold is 0.7-1.0 mm, the temperature of a machine head connector is 210-220 ℃, the temperature of the neck mold is 215-225 ℃, the temperature of cooling water is 15-25 ℃, the rotating speed of the screw is 47-48 rpm, the current of an auxiliary agent is 90-95A, the drawing magnification is 7.2, and the temperature of a machine barrel of the extruder is four regions: 190-195 ℃ in the first zone, 195-205 ℃ in the second zone, 205-220 ℃ in the third zone and 210-220 ℃ in the fourth zone.
7. The processing technology for producing the woven bag by using the recycled waste material as claimed in claim 1, wherein the conditions of the screw extruder in the third step are as follows: the diameter of the screw is 65mm, the power of a main motor is 25kW, the length-diameter ratio is 32, a spiral die head is adopted, a connector is 200-210 ℃, the head is 200-210 ℃, the rotating speed of the screw is 60-70 rpm, the traction speed is 100-150 m/min, and the temperature of the barrel of the screw extruder is respectively three regions: the temperature of the first zone is 170-195 ℃, the temperature of the second zone is 190-195 ℃ and the temperature of the third zone is 200-210 ℃.
8. The process for manufacturing woven bags from recycled waste materials as claimed in claim 1, wherein the conditions of the circular knitting machine in the fourth step are as follows: the machine head temperature is 240-250 ℃, the blowing-up ratio is 1.2, the screw rotating speed is 40rpm, the traction speed is 70-90 m/min, the hot stretching temperature is 100-110 ℃, the retention time is 1.2-1.5 s, the stretching multiple is 5 times, and the temperature of the cylinder of the cylindrical braiding machine is three zones respectively: the temperature of the first zone is 160-180 ℃, the temperature of the second zone is 220-230 ℃, and the temperature of the third zone is 230-250 ℃.
9. The process for manufacturing woven bags from recycled waste materials as claimed in claim 1, wherein the cutting device in step four works as follows:
the method comprises the following steps: placing the woven bag on a conveying mechanism of cutting equipment, driving a right-angle support to horizontally move by a second cylinder piston rod on a support frame, further driving a translation plate to horizontally move, driving a cutting plate to move between two connecting plates by the two translation plates, adjusting the position of the cutting plate, turning on a first motor, driving one guide rod to rotate by an output shaft of the first motor through a first belt pulley group, driving the rest tensioning rods, limiting rods and guide rods to rotate by the guide rod through the cooperation of a steel wire rope pulley and a steel wire, and further driving the woven plastic woven bag to be conveyed on the cutting plate;
step two: when cutting, a second motor output shaft in the fixed box drives the middle-placed plate to descend through a screw rod and a nut, the sliding blocks on two sides of the middle-placed plate slide down along the sliding rails and drive the lifting connecting plates on two sides to descend, the two lifting connecting plates drive the cross beam to descend, the cross beam drives the side arms on two sides to descend, a fourth cylinder piston rod on the side arms contracts to drive the second connecting plate to descend, the second connecting plate drives the connecting blocks to descend through the second lifting rod and further drive the lifting frame to descend, the limiting strips on the lifting frame are driven to contact with the plastic woven bags, the third motor drives the sliding blocks to slide on the other sliding rail through the second belt pulley set and further drive the cutting frame to horizontally move, the cutting position of the cutting blade is adjusted, the positions of the two limiting strips on the lifting frame are adjusted through the movable blocks after the cutting position is adjusted, the two, third cylinder piston rod drives first connecting piece and descends, and first connecting piece drives first lifter decline, and then drives cutting blade and descend, and cutting blade cuts plastic woven sack.
CN202010214381.9A 2020-03-24 2020-03-24 Processing technology for producing woven bag by utilizing recovered waste Withdrawn CN111363376A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112522978A (en) * 2020-12-01 2021-03-19 界首市聚屹包装材料有限公司 Plastic strapping rope prepared by using reclaimed materials
CN112679880A (en) * 2020-12-23 2021-04-20 界首市聚屹包装材料有限公司 Express delivery is with high wear-resisting plastic woven sack

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112522978A (en) * 2020-12-01 2021-03-19 界首市聚屹包装材料有限公司 Plastic strapping rope prepared by using reclaimed materials
CN112522978B (en) * 2020-12-01 2022-01-14 界首市聚屹包装材料有限公司 Preparation method for preparing plastic strapping rope by using reclaimed materials
CN112679880A (en) * 2020-12-23 2021-04-20 界首市聚屹包装材料有限公司 Express delivery is with high wear-resisting plastic woven sack

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Application publication date: 20200703