US20130227880A1 - Recycled plastic composite composition - Google Patents

Recycled plastic composite composition Download PDF

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Publication number
US20130227880A1
US20130227880A1 US13/784,931 US201313784931A US2013227880A1 US 20130227880 A1 US20130227880 A1 US 20130227880A1 US 201313784931 A US201313784931 A US 201313784931A US 2013227880 A1 US2013227880 A1 US 2013227880A1
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United States
Prior art keywords
composition
weight
recycled plastic
present
calcium carbonate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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US13/784,931
Inventor
Yu Bo
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ATT Southern LLC
Original Assignee
ATT Southern LLC
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Filing date
Publication date
Priority claimed from CN2012100556206A external-priority patent/CN102649312A/en
Priority claimed from CN201210055616XA external-priority patent/CN102649851A/en
Application filed by ATT Southern LLC filed Critical ATT Southern LLC
Assigned to ATT SOUTHERN INC. reassignment ATT SOUTHERN INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BO, YU
Assigned to JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT reassignment JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT SECURITY AGREEMENT Assignors: AMES TRUE TEMPER, INC., ATT SOUTHERN, INC., CLOPAY BUILDING PRODUCTS COMPANY, INC., CLOPAY PLASTIC PRODUCTS COMPANY, INC.
Publication of US20130227880A1 publication Critical patent/US20130227880A1/en
Priority to US15/180,835 priority Critical patent/US9943997B2/en
Priority to US15/186,981 priority patent/US20160297111A1/en
Assigned to BANK OF AMERICA, N.A. reassignment BANK OF AMERICA, N.A. NOTICE OF SUCCESSION OF AGENCY Assignors: JPMORGAN CHASE BANK, N.A.
Abandoned legal-status Critical Current

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Classifications

    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
    • 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
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • A01G9/021—Pots formed in one piece; Materials used therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
    • A47G1/06—Picture frames
    • A47G1/0605—Picture frames made from extruded or moulded profiles, e.g. of plastic or metal
    • 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
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • 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
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/50—Removing moulded articles
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
    • B29C70/64—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporating in the surface by force
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • 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
    • C08K3/34—Silicon-containing compounds
    • 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
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0058—Liquid or visquous
    • B29K2105/0067—Melt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16—Fillers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2509/00—Use of inorganic materials not provided for in groups B29K2503/00 - B29K2507/00, as filler
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0012—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular thermal properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7136—Vases, pots, e.g. for flowers
    • 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

Definitions

  • the present invention relates to a resin article, particularly to a composite formulation for a recycled EVA (ethylene-vinyl acetate copolymer), a recycled PP (chlorinated polypropylene), a recycled PVC (polyvinyl chloride), and a recycled PE (polyethylene), as well as to a process for the heat-pressing of a recycled plastic composite.
  • EVA ethylene-vinyl acetate copolymer
  • PP chlorinated polypropylene
  • PVC polyvinyl chloride
  • PE polyethylene
  • the problem in the resin article and the related art is the high cost of the raw material, the blank will be modified by the repairing, low production efficiency, the repeated usage of the corresponding mold being limited (about 300 times), and the lower surface smoothness, heat resistance, and toughness of the resin article.
  • the present invention provides a formulation for a recycled plastic composite comprising in the terms of weight percent: recycled EVA plastic from 30% to 80%, a stone powder from 20% to 70%.
  • said formulation comprises in the terms of weight percent: the recycled EVA plastic greater than 70% and less than or equal to 80%, the stone powder greater than or equal to 20% and less than 30%.
  • the recycled plastic comprises a recycled EVA (ethylene-vinyl acetate copolymer), a recycled PP (chlorinated polypropylene), a recycled PVC (polyvinyl chloride), and a recycled PE (polyethylene).
  • the formulation for the recycled plastic composite of the present invention can improve the toughness, strength, surface smoothness, heat resistance, and electroplating performance of various products obtained, can be pressed through hydraulic press, results in the increased production, lowered labor, cost for producing various products and decreased pollution.
  • the present invention further provides a process for the heat-pressing of a recycled plastic composite comprising sufficiently mixing the pellet of the recycled plastic and the heavy calcium carbonate according to the formulations to get the composite, the composite is fed to a screw melting machine with electric heating, heated and further mixed, the thick composite after being heated is conveyed to the outlet by the screw; the thick composite is obtained at the outlet, conveyed to the steel mold of the hydraulic press according to the volume of the mold to be molded and pressed strongly; said thick composite is cooled in the steel mold for 5 minute to 15 minute with the recirculation of the cooling water to de-mold the thick composite, and the thick composite is completely immersed in the water to be cooled completely to finish the heat-pressing of the composite.
  • the process of heat-pressing the composite of the present invention can improve production efficiency, the surface smoothness, the toughness of the product, the saving of the raw material, improving the heat resistance from ⁇ 40° C. to ⁇ 80° C., improve the electroplating performance of various products obtained, results in the decreased pollution.
  • the present invention provides a formulation for the recycled plastic composite which can improve the toughness, strength, surface smoothness, heat resistance, and electroplating performance of various products obtained, results in the increased production, lowered labor, cost for producing various products and decreased pollution.
  • a formulation for a recycled plastic composite comprising in the terms of weight percent: a recycled plastic from 30% to 80%, a heavy calcium carbonate from 20% to 70%.
  • the recycled plastic is one or mixture of more in any ratio of a recycled EVA (ethylene-vinyl acetate copolymer), a recycled PP (chlorinated polypropylene), a recycled PVC (polyvinyl chloride), and a recycled PE (polyethylene).
  • said formulation comprises in the terms of weight percent: the recycled plastic greater than 70% and less than or equal to 80%, the heavy calcium carbonate greater than or equal to 20% and less than 30%.
  • said formulation comprises in the terms of weight percent: the recycled plastic greater than 60% and less than or equal to 70%, the heavy calcium carbonate greater than or equal to 30% and less than 40%.
  • said formulation comprises in the terms of weight percent: the recycled plastic greater than 50% and less than or equal to 60%, the heavy calcium carbonate greater than or equal to 40% and less than 50%. In one embodiment, said formulation comprises in the terms of weight percent: the recycled plastic greater than 40% and less than or equal to 50%, the heavy calcium carbonate greater than or equal to 50% and less than 60%. In one embodiment, said formulation comprises in the terms of weight percent: the recycled plastic greater than 30% and less than or equal to 40%, the heavy calcium carbonate greater than or equal to 60% and less than 70%. In one embodiment, the talc can be added to any of the formulation in an amount from 1% to 15%.
  • the technical effects achieved in the present invention through the above mentioned embodiments include improving the toughness, strength, surface smoothness, heat resistance, and electroplating performance of various products obtained, can be pressed through hydraulic press, results in the increased production, lowered labor, cost for producing various products and decreased pollution.
  • the present invention provides a process of heat-pressing the composite which can improve production efficiency, the surface smoothness, the toughness of the product, the saving of the raw material, improving the heat resistance from ⁇ 40° C. to ⁇ 80° C., improve the electroplating performance of various products obtained, results in the decreased pollution.
  • a process for the heat-pressing of a recycled plastic composite comprising the steps of:
  • the composite is fed to a screw melting machine with electric heating, heated and further mixed, the thick composite after being heated is conveyed to the outlet by the screw;
  • the thick composite is obtained at the outlet, conveyed to the steel mold of the hydraulic press according to the volume of the mold to be molded and pressed strongly;
  • said thick composite is cooled in the steel mold for 5 minute to 15 minute with the recirculation of the cooling water to de-mold the thick composite, and the thick composite is completely immersed in the water to be cooled completely to finish the heat-pressing of the composite.
  • the size of the heavy calcium carbonate is from 600 mesh to 1200 mesh.
  • the temperature in the screw melting machine with electric heating is controlled to be from 160° C. to 240° C.
  • the technical effects achieved in the present invention through the above mentioned embodiments include improving production efficiency, the surface smoothness, the toughness of the product, the saving of the raw material, improving the heat resistance from ⁇ 40° C. to ⁇ 80° C., improving the electroplating performance of various products obtained, resulting in the decreased pollution.
  • the product of the process of the present invention is the resin article such as flowerpot, frame for the image, lamp bracket and lamp socket, fence of the garden, guard of the garden, gift, furniture decoration, construction decoration, graving article, graving of emulation, and the raw materials for emulation animal and plant graving.
  • the present invention provides a formulation for a recycled plastic composite comprising in the terms of weight percent: a recycled EVA plastic from 30% to 80%, a heavy calcium carbonate from 20% to 70%.
  • the recycled plastic is one or mixture of more in any ratio of a recycled EVA (ethylene-vinyl acetate copolymer), a recycled PP (chlorinated polypropylene), a recycled PVC (polyvinyl chloride), and a recycled PE (polyethylene).
  • the formulation for the high toughness recycled plastic composite comprises in the terms of weight percent: the recycled plastic greater than 70% and less than or equal to 80%, the heavy calcium carbonate greater than or equal to 20% and less than 30%.
  • Formulation 1 the recycled plastic 80%, the heavy calcium carbonate 20%.
  • Formulation 2 the recycled plastic 71%, the heavy calcium carbonate 29%.
  • Formulation 3 the recycled plastic 75%, the heavy calcium carbonate 25%.
  • formulation for the less high toughness recycled plastic composite comprises in the terms of weight percent: the recycled plastic greater than 60% and less than or equal to 70%, the heavy calcium carbonate greater than or equal to 30% and less than 40%.
  • Formulation 4 the recycled EVA plastic 70%, the heavy calcium carbonate 30%.
  • Formulation 5 the recycled EVA plastic 65%, the heavy calcium carbonate 35%.
  • Formulation 6 the recycled EVA plastic 61%, the heavy calcium carbonate 39%.
  • the formulation for the medium toughness recycled plastic composite comprises in the terms of weight percent: the recycled plastic greater than 50% and less than or equal to 60%, the heavy calcium carbonate greater than or equal to 40% and less than 50%.
  • Formulation 7 the recycled EVA plastic 60%, the heavy calcium carbonate 40%.
  • Formulation 8 the recycled EVA plastic 55%, the heavy calcium carbonate 45%.
  • Formulation 9 the recycled EVA plastic 51% the heavy calcium carbonate 49%.
  • the formulation for the less medium toughness recycled plastic composite comprises in the terms of weight percent: the recycled plastic greater than 40% and less than or equal to 50%, the heavy calcium carbonate greater than or equal to 50% and less than 60%.
  • Formulation 10 the recycled EVA plastic 50%, the heavy calcium carbonate 50%.
  • Formulation 11 the recycled EVA plastic 45%, the heavy calcium carbonate 55%.
  • Formulation 12 the recycled EVA plastic 39%, the heavy calcium carbonate 61%.
  • the formulation for the low toughness recycled plastic composite comprises in the terms of weight percent: the recycled plastic greater than 30% and less than or equal to 40%, the heavy calcium carbonate greater than or equal to 60% and less than 70%.
  • Formulation 13 the recycled EVA plastic 40%, the heavy calcium carbonate 60%.
  • Formulation 14 the recycled EVA plastic 35%, the heavy calcium carbonate 65%.
  • Formulation 15 the recycled EVA plastic 31%, the heavy calcium carbonate 69%.
  • the talc can be added to any of the formulation in an amount from 1% to 15% in order to improve the surface smoothness of the article.
  • the method for producing the composite comprises sufficiently mixing the pellet of the recycled plastic and the heavy calcium carbonate according to any abovementioned formulations to get the composite, the composite is fed to a screw melting machine with electric heating, heated and further mixed, the thick composite after being heated is conveyed to the outlet by the screw; the thick composite is obtained at the outlet, conveyed to the steel mold of the hydraulic press according to the volume of the mold to be molded, the thick composite is completely immersed in the water after cooling the temperature thereof to complete the heat-pressing of the composite.
  • the formulation of the present invention is useful in the resin article such as for the manufacturing of flowerpot, frame for the image, lamp bracket and lamp socket, fence of the garden, guard of the garden, unsaturated resin article, gift, furniture decoration, construction decoration, graving article, graving of emulation, and the raw materials for various products.
  • the present invention provides a process for the heat-pressing of a recycled plastic composite comprising the steps of:
  • the recycled plastic is one or mixture of more in any ratio of a recycled EVA (ethylene-vinyl acetate copolymer), a recycled PP (chlorinated polypropylene), a recycled PVC (polyvinyl chloride), and a recycled PE (polyethylene).
  • EVA ethylene-vinyl acetate copolymer
  • PP chlorinated polypropylene
  • PVC polyvinyl chloride
  • PE polyethylene
  • the formulation for the high toughness recycled plastic composite the recycled plastic from 70% to 80%, the heavy calcium carbonate from 20% to 30%; the formulation for the less high toughness recycled plastic: the recycled plastic from 60% to 70%, the heavy calcium carbonate from 30% to 40%; the formulation for the medium toughness recycled plastic: the recycled plastic from 50% to 60%, the heavy calcium carbonate from 40% to 50%; the formulation for the less medium toughness recycled plastic: the recycled plastic from 40% to 50%, the heavy calcium carbonate from 50% to 60%; the formulation for the low toughness recycled plastic: the recycled plastic from 30% to 40%, the heavy calcium carbonate from 60% to 70%.
  • the composite is fed to a screw melting machine with electric, heating, heated and further mixed, the thick composite after being, heated is conveyed to the outlet by the screw; in the step B, the feeding of the composite to the screw melting machine with electric heating can be carried out through a manual or mechanical means;
  • the thick composite is obtained at the outlet, conveyed to the steel mold of the hydraulic press according, to the volume of the mold to be molded and pressed strongly; in the step C, the obtaining of the thick composite can be carried out through a manual or mechanical means; or the conveying of the thick composite to the steel mold of the hydraulic press can be carried out through a manual or mechanical means;
  • said thick composite is cooled in the steel mold for 5 minute to 15 minute with the recirculation of the cooling water to de-mold the thick composite, and the thick composite is completely immersed in the water to be cooled completely to finish the heat-pressing of the composite.
  • the size of the heavy calcium carbonate is from 600 mesh to 1200 mesh.
  • the temperature in the screw melting, machine with electric heating is controlled to be from 160° C. to 240° C.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Composite Materials (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A formulation for a recycled plastic, composite composition, and a method of making the composite composition, is provided. The composite composition includes recycled EVA plastic from 30% to 80%, a stone powder from 20% to 70%; percentages by weight.

Description

    CROSS REFERENCE TO RELATED APPLICATION
  • This application claims priority under 35 U.S.C. §119(e) to Chinese Patent Application Nos. CN201210055616.X, filed Mar. 5, 2012, and CN201210055620.6, filed Mar. 5, 2012.
    • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a resin article, particularly to a composite formulation for a recycled EVA (ethylene-vinyl acetate copolymer), a recycled PP (chlorinated polypropylene), a recycled PVC (polyvinyl chloride), and a recycled PE (polyethylene), as well as to a process for the heat-pressing of a recycled plastic composite.
  • 2. Background Information
  • Currently the problem in the resin article and the related art is the high cost of the raw material, the blank will be modified by the repairing, low production efficiency, the repeated usage of the corresponding mold being limited (about 300 times), and the lower surface smoothness, heat resistance, and toughness of the resin article.
    • SUMMARY OF THE INVENTION
  • The present invention provides a formulation for a recycled plastic composite comprising in the terms of weight percent: recycled EVA plastic from 30% to 80%, a stone powder from 20% to 70%. Preferably, said formulation comprises in the terms of weight percent: the recycled EVA plastic greater than 70% and less than or equal to 80%, the stone powder greater than or equal to 20% and less than 30%. The recycled plastic comprises a recycled EVA (ethylene-vinyl acetate copolymer), a recycled PP (chlorinated polypropylene), a recycled PVC (polyvinyl chloride), and a recycled PE (polyethylene). The formulation for the recycled plastic composite of the present invention can improve the toughness, strength, surface smoothness, heat resistance, and electroplating performance of various products obtained, can be pressed through hydraulic press, results in the increased production, lowered labor, cost for producing various products and decreased pollution.
  • The present invention further provides a process for the heat-pressing of a recycled plastic composite comprising sufficiently mixing the pellet of the recycled plastic and the heavy calcium carbonate according to the formulations to get the composite, the composite is fed to a screw melting machine with electric heating, heated and further mixed, the thick composite after being heated is conveyed to the outlet by the screw; the thick composite is obtained at the outlet, conveyed to the steel mold of the hydraulic press according to the volume of the mold to be molded and pressed strongly; said thick composite is cooled in the steel mold for 5 minute to 15 minute with the recirculation of the cooling water to de-mold the thick composite, and the thick composite is completely immersed in the water to be cooled completely to finish the heat-pressing of the composite. The process of heat-pressing the composite of the present invention can improve production efficiency, the surface smoothness, the toughness of the product, the saving of the raw material, improving the heat resistance from −40° C. to −80° C., improve the electroplating performance of various products obtained, results in the decreased pollution.
  • More specifically, the present invention provides a formulation for the recycled plastic composite which can improve the toughness, strength, surface smoothness, heat resistance, and electroplating performance of various products obtained, results in the increased production, lowered labor, cost for producing various products and decreased pollution. In order to achieve the subject of the present invention, there is provided the following embodiments: a formulation for a recycled plastic composite comprising in the terms of weight percent: a recycled plastic from 30% to 80%, a heavy calcium carbonate from 20% to 70%.
  • Preferably, the recycled plastic is one or mixture of more in any ratio of a recycled EVA (ethylene-vinyl acetate copolymer), a recycled PP (chlorinated polypropylene), a recycled PVC (polyvinyl chloride), and a recycled PE (polyethylene). In one embodiment, said formulation comprises in the terms of weight percent: the recycled plastic greater than 70% and less than or equal to 80%, the heavy calcium carbonate greater than or equal to 20% and less than 30%. In one embodiment, said formulation comprises in the terms of weight percent: the recycled plastic greater than 60% and less than or equal to 70%, the heavy calcium carbonate greater than or equal to 30% and less than 40%. In one embodiment, said formulation comprises in the terms of weight percent: the recycled plastic greater than 50% and less than or equal to 60%, the heavy calcium carbonate greater than or equal to 40% and less than 50%. In one embodiment, said formulation comprises in the terms of weight percent: the recycled plastic greater than 40% and less than or equal to 50%, the heavy calcium carbonate greater than or equal to 50% and less than 60%. In one embodiment, said formulation comprises in the terms of weight percent: the recycled plastic greater than 30% and less than or equal to 40%, the heavy calcium carbonate greater than or equal to 60% and less than 70%. In one embodiment, the talc can be added to any of the formulation in an amount from 1% to 15%.
  • The technical effects achieved in the present invention through the above mentioned embodiments include improving the toughness, strength, surface smoothness, heat resistance, and electroplating performance of various products obtained, can be pressed through hydraulic press, results in the increased production, lowered labor, cost for producing various products and decreased pollution.
  • Further, the present invention provides a process of heat-pressing the composite which can improve production efficiency, the surface smoothness, the toughness of the product, the saving of the raw material, improving the heat resistance from −40° C. to −80° C., improve the electroplating performance of various products obtained, results in the decreased pollution. In order to achieve the subject of the present invention, there is provided a process for the heat-pressing of a recycled plastic composite comprising the steps of:
  • A. sufficiently mixing the pellet of the recycled plastic and the heavy calcium carbonate according to the formulations to get the composite;
  • B. the composite is fed to a screw melting machine with electric heating, heated and further mixed, the thick composite after being heated is conveyed to the outlet by the screw;
  • C. the thick composite is obtained at the outlet, conveyed to the steel mold of the hydraulic press according to the volume of the mold to be molded and pressed strongly;
  • D. said thick composite is cooled in the steel mold for 5 minute to 15 minute with the recirculation of the cooling water to de-mold the thick composite, and the thick composite is completely immersed in the water to be cooled completely to finish the heat-pressing of the composite.
  • Preferably, the size of the heavy calcium carbonate is from 600 mesh to 1200 mesh. Preferably, the temperature in the screw melting machine with electric heating is controlled to be from 160° C. to 240° C.
  • The technical effects achieved in the present invention through the above mentioned embodiments include improving production efficiency, the surface smoothness, the toughness of the product, the saving of the raw material, improving the heat resistance from −40° C. to −80° C., improving the electroplating performance of various products obtained, resulting in the decreased pollution. The product of the process of the present invention is the resin article such as flowerpot, frame for the image, lamp bracket and lamp socket, fence of the garden, guard of the garden, gift, furniture decoration, construction decoration, graving article, graving of emulation, and the raw materials for emulation animal and plant graving.
    • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • The present invention provides a formulation for a recycled plastic composite comprising in the terms of weight percent: a recycled EVA plastic from 30% to 80%, a heavy calcium carbonate from 20% to 70%.
  • Preferably, the recycled plastic is one or mixture of more in any ratio of a recycled EVA (ethylene-vinyl acetate copolymer), a recycled PP (chlorinated polypropylene), a recycled PVC (polyvinyl chloride), and a recycled PE (polyethylene). Specifically the formulation for the high toughness recycled plastic composite comprises in the terms of weight percent: the recycled plastic greater than 70% and less than or equal to 80%, the heavy calcium carbonate greater than or equal to 20% and less than 30%.
  • Formulation 1: the recycled plastic 80%, the heavy calcium carbonate 20%.
  • Formulation 2: the recycled plastic 71%, the heavy calcium carbonate 29%.
  • Formulation 3: the recycled plastic 75%, the heavy calcium carbonate 25%.
  • More specifically the formulation for the less high toughness recycled plastic composite comprises in the terms of weight percent: the recycled plastic greater than 60% and less than or equal to 70%, the heavy calcium carbonate greater than or equal to 30% and less than 40%.
  • Formulation 4: the recycled EVA plastic 70%, the heavy calcium carbonate 30%.
  • Formulation 5: the recycled EVA plastic 65%, the heavy calcium carbonate 35%.
  • Formulation 6: the recycled EVA plastic 61%, the heavy calcium carbonate 39%.
  • Still more specifically the formulation for the medium toughness recycled plastic composite comprises in the terms of weight percent: the recycled plastic greater than 50% and less than or equal to 60%, the heavy calcium carbonate greater than or equal to 40% and less than 50%.
  • Formulation 7: the recycled EVA plastic 60%, the heavy calcium carbonate 40%.
  • Formulation 8: the recycled EVA plastic 55%, the heavy calcium carbonate 45%.
  • Formulation 9: the recycled EVA plastic 51% the heavy calcium carbonate 49%.
  • Still more specifically the formulation for the less medium toughness recycled plastic composite comprises in the terms of weight percent: the recycled plastic greater than 40% and less than or equal to 50%, the heavy calcium carbonate greater than or equal to 50% and less than 60%.
  • Formulation 10: the recycled EVA plastic 50%, the heavy calcium carbonate 50%.
  • Formulation 11: the recycled EVA plastic 45%, the heavy calcium carbonate 55%.
  • Formulation 12: the recycled EVA plastic 39%, the heavy calcium carbonate 61%.
  • Still more specifically the formulation for the low toughness recycled plastic composite comprises in the terms of weight percent: the recycled plastic greater than 30% and less than or equal to 40%, the heavy calcium carbonate greater than or equal to 60% and less than 70%.
  • Formulation 13: the recycled EVA plastic 40%, the heavy calcium carbonate 60%.
  • Formulation 14: the recycled EVA plastic 35%, the heavy calcium carbonate 65%.
  • Formulation 15: the recycled EVA plastic 31%, the heavy calcium carbonate 69%.
  • Preferably, the talc can be added to any of the formulation in an amount from 1% to 15% in order to improve the surface smoothness of the article.
  • The method for producing the composite comprises sufficiently mixing the pellet of the recycled plastic and the heavy calcium carbonate according to any abovementioned formulations to get the composite, the composite is fed to a screw melting machine with electric heating, heated and further mixed, the thick composite after being heated is conveyed to the outlet by the screw; the thick composite is obtained at the outlet, conveyed to the steel mold of the hydraulic press according to the volume of the mold to be molded, the thick composite is completely immersed in the water after cooling the temperature thereof to complete the heat-pressing of the composite. The formulation of the present invention is useful in the resin article such as for the manufacturing of flowerpot, frame for the image, lamp bracket and lamp socket, fence of the garden, guard of the garden, unsaturated resin article, gift, furniture decoration, construction decoration, graving article, graving of emulation, and the raw materials for various products.
  • The present invention provides a process for the heat-pressing of a recycled plastic composite comprising the steps of:
  • A. sufficiently mixing the pellet of the recycled plastic and the heavy calcium carbonate according to the formulations to get the composite wherein the mixing can be carried out through a manual or mechanical means. The recycled plastic is one or mixture of more in any ratio of a recycled EVA (ethylene-vinyl acetate copolymer), a recycled PP (chlorinated polypropylene), a recycled PVC (polyvinyl chloride), and a recycled PE (polyethylene). The formulation is as follows:
  • The formulation for the high toughness recycled plastic composite: the recycled plastic from 70% to 80%, the heavy calcium carbonate from 20% to 30%; the formulation for the less high toughness recycled plastic: the recycled plastic from 60% to 70%, the heavy calcium carbonate from 30% to 40%; the formulation for the medium toughness recycled plastic: the recycled plastic from 50% to 60%, the heavy calcium carbonate from 40% to 50%; the formulation for the less medium toughness recycled plastic: the recycled plastic from 40% to 50%, the heavy calcium carbonate from 50% to 60%; the formulation for the low toughness recycled plastic: the recycled plastic from 30% to 40%, the heavy calcium carbonate from 60% to 70%.
  • B. the composite is fed to a screw melting machine with electric, heating, heated and further mixed, the thick composite after being, heated is conveyed to the outlet by the screw; in the step B, the feeding of the composite to the screw melting machine with electric heating can be carried out through a manual or mechanical means;
  • C. the thick composite is obtained at the outlet, conveyed to the steel mold of the hydraulic press according, to the volume of the mold to be molded and pressed strongly; in the step C, the obtaining of the thick composite can be carried out through a manual or mechanical means; or the conveying of the thick composite to the steel mold of the hydraulic press can be carried out through a manual or mechanical means;
  • D. said thick composite is cooled in the steel mold for 5 minute to 15 minute with the recirculation of the cooling water to de-mold the thick composite, and the thick composite is completely immersed in the water to be cooled completely to finish the heat-pressing of the composite.
  • Preferably in the example described above, the size of the heavy calcium carbonate is from 600 mesh to 1200 mesh. Preferably in the example described above, the temperature in the screw melting, machine with electric heating is controlled to be from 160° C. to 240° C.
  • While specific embodiments of the invention have been described in detail, it will be appreciated by those skilled in the art that various modifications and alternatives to those details could be developed in light of the overall teachings of the disclosure. Accordingly, the particular arrangements disclosed are meant to be illustrative only and not limiting as to the scope of invention which is to be given the full breadth of the claims appended and any and all equivalents thereof.

Claims (20)

What is claimed is:
1. A recycled plastic composite composition, comprising:
a recycled plastic;
a heavy calcium carbonate;
wherein the recycled plastic is present in an amount 30% to 80% by weight based on weight of the composition; and
wherein the heavy calcium carbonate is present in an amount from 20% to 70% by weight based on weight of the composition.
2. The composition of claim 1 wherein:
the recycled plastic is present in an amount greater than 70% and less than or equal to 80% by weight based on weight of the composition; and
the heavy calcium carbonate is present in an amount greater than 20% and less than or equal to 30% by weight based on weight of the composition.
3. The composition of claim 1 wherein:
the recycled plastic is present in an amount greater than 60% and less than or equal to 70% by weight based on weight of the composition; and
the heavy calcium carbonate is present in an amount greater than 30% and less than or equal to 40% by weight based on weight of the composition.
4. The composition of claim 1 wherein:
the recycled plastic is present in an amount greater than 50% and less than or equal to 60% by weight based on weight of the composition; and
the heavy calcium carbonate is present in an amount greater than 40% and less than or equal to 50% by weight based on weight of the composition.
5. The composition of claim 1 wherein:
the recycled plastic is present in an amount greater than 40% and less than or equal to 50% by weight based on weight of the composition; and
the heavy calcium carbonate is present in an amount greater than 50% and less than or equal to 60% by weight based on weight of the composition.
6. The composition of claim 1 wherein:
the recycled plastic is present in an amount greater than 30% and less than or equal to 40% by weight based on weight of the composition; and
the heavy calcium carbonate is present in an amount greater than 60% and less than or equal to 70% by weight based on weight of the composition.
7. The composition of claim 1 wherein the composition further includes talc.
8. The composition of claim 1 wherein the composition is heated to become a thick composite.
9. A method of preparing a recycled plastic composite composition, comprising:
melting together components, comprising:
a recycled plastic, wherein the recycled plastic is present in an amount 30% to 80% by weight based on weight of the composition;
a heavy calcium carbonate, wherein the heavy calcium carbonate is present in an amount from 20% to 70% by weight based on weight of the composition;
to obtain a thick composite; and
molding the thick composite to obtain said recycled plastic composite composition.
10. The method of claim 9 wherein;
the recycled plastic is present in an amount greater than 70% and less than or equal to 80% by weight based on weight of the composition; and
the heavy calcium carbonate is present in an amount greater than 20% and less than or equal to 30% by weight based on weight of the composition.
11. The method of claim 9 wherein:
the recycled plastic is present in an amount greater than 60% and less than or equal to 70% by weight based on weight of the composition; and
the heavy calcium carbonate is present in an amount greater than 30% and less than or equal to 40% by weight based on weight of the composition.
12. The method of claim 9 wherein:
the recycled plastic is present in an amount greater than 50% and less than or equal to 60% by weight based on weight of the composition; and
the heavy calcium carbonate is present in an amount greater than 40% and less than or equal to 50% by weight based on weight of the composition.
13. The method of claim 9 wherein:
the recycled plastic is present in an amount greater than 40% and less than or equal to 50% by weight based on weight of the composition; and
the heavy calcium carbonate is present in an amount greater than 50% and less than or equal to 60% by weight based on weight of the composition.
14. The method of claim 9 wherein:
the recycled plastic is present in an amount greater than 30% and less than or equal to 40% by weight based on weight of the composition; and
the heavy calcium carbonate is present in an amount greater than 60% and less than or equal to 70% by weight based on weight of the composition.
15. The method of claim 9 wherein the composition further includes talc.
16. The method of claim 9 wherein the step of melting together components includes the steps of:
mixing pellets of the recycled plastic and the heavy calcium carbonate to produce a composite mixture;
feeding the composite mixture to a screw melting machine with electric heating;
heating the composite mixture to produce a thick composite; and
conveying the thick composite to an outlet.
17. The method of claim 16 wherein the step of molding the thick composite to obtain said recycled plastic composite composition includes the steps of:
conveying the thick composite to a mold; and
cooling the thick composite.
18. The method of claim 17 wherein the step of cooling the thick composite includes the steps of:
cooling the thick composite in the mold with the circulation of the cooling water to de-mold the thick composite,
demolding the thick composite; and
immersing the thick composite in water to be cooled completely.
19. A recycled plastic composite device comprising:
a recycled plastic composite composition, comprising:
a recycled plastic;
a heavy calcium carbonate;
wherein the recycled plastic is present in an amount 30% to 80% by weight based on weight of the composition; and
wherein the heavy calcium carbonate is present in an amount from 20% to 70% by weight based on weight of the composition.
20. The recycled plastic composite device of claim 19 wherein the device is a Flowerpot.
US13/784,931 2012-03-05 2013-03-05 Recycled plastic composite composition Abandoned US20130227880A1 (en)

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