WO2016059572A2 - Installation et procédé de fabrication d'un film plastique - Google Patents

Installation et procédé de fabrication d'un film plastique Download PDF

Info

Publication number
WO2016059572A2
WO2016059572A2 PCT/IB2015/057872 IB2015057872W WO2016059572A2 WO 2016059572 A2 WO2016059572 A2 WO 2016059572A2 IB 2015057872 W IB2015057872 W IB 2015057872W WO 2016059572 A2 WO2016059572 A2 WO 2016059572A2
Authority
WO
WIPO (PCT)
Prior art keywords
raw material
plant according
extruder
molten mass
extruding
Prior art date
Application number
PCT/IB2015/057872
Other languages
English (en)
Other versions
WO2016059572A3 (fr
Inventor
Renato Federici
Original Assignee
Polimer S.A.S. Di Federici Renato E C.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Polimer S.A.S. Di Federici Renato E C. filed Critical Polimer S.A.S. Di Federici Renato E C.
Publication of WO2016059572A2 publication Critical patent/WO2016059572A2/fr
Publication of WO2016059572A3 publication Critical patent/WO2016059572A3/fr

Links

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
    • 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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/402—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/255—Flow control means, e.g. valves
    • B29C48/2552—Flow control means, e.g. valves provided in the feeding, melting, plasticising or pumping zone, e.g. screw, barrel, gear-pump or ram
    • 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • 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
    • B29C48/285—Feeding the extrusion material to the extruder
    • B29C48/297—Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
    • 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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/405—Intermeshing co-rotating 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
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/41—Intermeshing counter-rotating 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92009—Measured parameter
    • B29C2948/92019—Pressure
    • 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
    • B29C2948/92009—Measured parameter
    • B29C2948/92228—Content, e.g. percentage of humidity, volatiles, contaminants or degassing
    • 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
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/92409—Die; Nozzle zone
    • 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
    • B29C2948/92323—Location or phase of measurement
    • B29C2948/92361—Extrusion unit
    • B29C2948/92419—Degassing unit
    • 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
    • B29C2948/92514—Pressure
    • 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
    • B29C2948/92723—Content, e.g. percentage of humidity, volatiles, contaminants or degassing
    • 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
    • B29C2948/9279—Errors or malfunctioning, e.g. for quality 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/928—Presence or absence; Sequence; Counting
    • 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
    • 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
    • B29C2948/92914—Degassing unit
    • 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
    • B29C2948/92942—Moulded article
    • 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
    • B29C48/69—Filters or screens for the moulding material
    • 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
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
    • 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
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
    • B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
    • 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
    • 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
    • B29K2105/065—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts containing impurities
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0059—Degradable
    • B29K2995/006—Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/001—Tubular films, sleeves

Definitions

  • This invention relates to a plant and a method for making, in particular for extruding, a plastic film, especially in the tubular or flat sheet form.
  • This invention therefore proposes a new solution as an alternative to the solutions known up to now and, more specifically, proposes to overcome one or more of the above mentioned drawbacks and/or problems and/or to meet one or more of the needs felt in the trade or inferable from the above.
  • a plant for making a plastic film, in particular tubular or in a flat sheet, preferably intended for making sacks, bags and the like; comprising means for forming the film in the form of a bubble starting with a respective molten mass of plastic material, which is fed to the forming means by corresponding means for extruding a raw material received from respective means for loading the raw material in the plant; characterised in that the means for extruding the raw material comprise a compounding extruder.
  • the invention further provides an advantageous method for making a plastic film.
  • FIG. 1 is a schematic view of a preferred embodiment of the plant according to this invention.
  • FIG. 2 is a schematic lateral view of the extruding means used in the preferred embodiment of the plant according to this invention.
  • FIG. 3 is a schematic front view of the preferred embodiment of the extruding means used in the preferred embodiment of the plant according to this invention.
  • FIG. 4 is a perspective view of a preferred embodiment of degassing means which are used in the means for extruding the raw material. Detailed description of preferred embodiments of the invention
  • Figure 1 illustrates a schematic view of an embodiment of the plant 10 for making a plastic film 11 , in particular tubular or in a flat sheet, preferably intended for making sacks, bags and the like.
  • the plant 10 comprises means 12 for forming the film 11 in the form of a bubble 15 starting with a respective molten mass of plastic material, which is fed to the forming means 12 by corresponding means 14 for extruding a raw material 13.
  • the plant also comprises means 16 for loading the raw material on the extruding means 14.
  • the plant comprises means 14 for extruding the raw material, which include a respective compounding extruder 18.
  • a method for making a plastic film 11 , preferably tubular in shape, and in particular for making sacks, bags or the like, using respective means 12 for forming the film 11 , in the form of a bubble 15, starting from a respective molten mass of plastic material, wherein, advantageously, a respective molten mass is melted and compounded, which is fed directly to the means for making the film 11.
  • This prevents a waste of energy for making, in a step before making the plastic film, the compounds defining the raw material.
  • the film 11 may be placed on suitable collection reels 111 , preferably to be sent to the plants for making sacks, bags and the like.
  • the raw material used comprises plastic which is recycled, or regenerated, after consumption.
  • the raw material used comprises a biodegradable and/or compostable polymer.
  • the biodegradable and/or compostable polymer with mineral filler which is advantageous in terms of biodegradability of the product obtained and without requiring the prior formation of compound which comprises the biodegradable and/or compostable polymer and corresponding mineral filler, thus achieving an considerable overall energy saving.
  • the raw material used comprises respective pure polymers, such as, for example, polyethylene and/or polypropylene or mixtures of the pure polymers.
  • the raw material used also comprises additives and/or fillers, in particular mineral fillers.
  • the means 12 for extruding the raw material comprise advantageous means 22 for compressing the molten mass in the forming means 12.
  • the compressing means 22 are positioned downstream of the compounding extruder 18.
  • the means 14 for extruding the raw material comprise means 20 for filtering the molten mass, in particular operating with a continuous flow, which are in particular positioned downstream of the compounding extruder 18 and upstream of the compressing means 22.
  • the means 20 for filtering the molten mass are of the automatic filter change type, in such a way as to keep a continuous flow of the molten mass towards the means 12 for forming the film during the entire process for forming the plastic film.
  • the means for compressing the molten mass in the means 12 for forming the plastic film especially comprising a respective compression pump 22, which is, in particular, operating with continuous flow and is preferably in the form of a pump of the gear pump type, which advantageously increases the pressure of the molten mass flowing out from the compounding extruder 18 up to a pressure level sufficient to compress it in the corresponding head, or means, for forming the plastic film 12 in the form of a bubble.
  • these compression means 22 are provided such as to change the pressure of the molten mass to a level equal to 300 bar, which is particularly suitable to feed the corresponding head for forming the film in the bubble 12, in particular starting from quite a low pressure of the molten mass escaping from the compounding extruder 18, which has, for example, a pressure level equal to 80 bar.
  • the compounding extruder 18 is in the form of an extruder of the twin-screw type.
  • twin-screw type extruder could be made from respective screws, or spirals, either co-rotating or contra-rotating, the latter being particularly advantageous for processing biodegradable raw materials, that is, such as to prevent the decay of the respective particle.
  • the compounding extruder could be in the form of a conical twin-screw type extruder, that is, a parallel twin-screw type extruder.
  • Another compounding extruder may be made in the form of an extruder having a single rotatable screw, whose respective screw body has an additional alternating movement according to the line of the axis of rotation.
  • the compounding extruder 18 comprises a series of successive stages 181 for thermal conditioning of the extruded mass, in particular for heating the mass during forming, which allow a homogeneous and optimum mass to be made, in a suitable manner, even starting from different types of raw material.
  • the compounding extruder 18 comprises respective means 24 for degassing the molten mass.
  • the compounding extruder 18 comprises a plurality, in particular first and second, means 24, 24 or units for degassing the molten mass, which are labelled 24, 24 in the accompanying drawings.
  • the first and second means 24, 24 for degassing the molten mass are provided longitudinally spaced from each other along the linear or longitudinal extension of the extruder 18.
  • the degassing means 24 are in the form of venting means positioned at the top of the hollow body, or cylinder, forming the inner chamber of the extruder 14 and in communication with the inner extruding chamber of the compounding extruder 14.
  • degassing means 240 of the type illustrated in Figure 4. It relates to degassing means which can be positioned laterally to the hollow body, or cylinder, forming the inner chamber of the compounding extruder 14, as indicated with a dashed line in Figure 2, and which are in communication with the inner extrusion chamber of this and which in particular are such as to allow the degassing of the molten mass without allowing any escape of the raw material of the mass.
  • these degassing means 240 without escape of material comprise a first and a second screw 241 , 241 , leading into the extruding chamber defined by the outer cylinder of the compounding extruder 14, and coming out from a respective duct 242, which operate on the molten mass in such a way as to keep the mass inside the extruding chamber, whilst allowing gas to come out of the extruding chamber through the same duct 242 and, therefore, outside the device 240 through the opening 243.
  • these degassing means 240 are positioned downstream of the zones 162 and/or 26 for inserting the raw material.
  • the compounding extruder 18 also comprises means 26 for inserting a secondary raw material, preferably in the form of a mineral filler, preferably consisting of calcium carbonate, talc, kaolin and other substances. More specifically, the means 26 for inserting a secondary raw material are, in particular, located downstream of the corresponding means 162 for inserting the main raw material fed through the loading means 16, which introduce the main raw material at an upstream end of the compounding extruder 18, as may be well inferred from Figure 2.
  • a secondary raw material preferably in the form of a mineral filler, preferably consisting of calcium carbonate, talc, kaolin and other substances.
  • the means 26 for inserting a secondary raw material are, in particular, located downstream of the corresponding means 162 for inserting the main raw material fed through the loading means 16, which introduce the main raw material at an upstream end of the compounding extruder 18, as may be well inferred from Figure 2.
  • the means 26 for inserting a secondary raw material are also designed to define respective means, or units, for degassing the molten mass.
  • the means 16 for loading the raw material are designed to feed a respective raw material, comprising one or more of the following materials: particles or granules of recycled or regenerated plastic, in particular particularly regenerated, granules of biodegradable and/or compostable polymer, granules of pure polymers, additives and/or fillers, in particular mineral fillers.
  • the loading means comprise respective loading hoppers 162, 162, each being designed preferably to receive a corresponding raw material, or a respective component part of the raw material, in particular of the main raw material.
  • the means 26 for inserting the secondary raw material are located at an intermediate position of the compounding extruder 18, in particular downstream of the means 162 for inserting the main raw material.
  • the degassing means 24 are provided at and/or downstream of the means 26 for inserting the secondary raw material.
  • the raw material extruding means 14 comprise, at the end downstream of the compounding extruder 18, means 28 designed to render uniform and/or to compact the molten mass of material coming out of the compounding extruder 18.
  • the extruding means 14 comprise outfeed means for the molten mass, in particular downstream of the compressing means 20, the outfeed means for the molten mass 141 being directly connected to a respective infeed 121 in the film forming means 12.
  • the extruding means 14 comprise a respective motor 8 connected through a respective reducer 9 to the shaft, or axis, of rotation of the extruding feeder(s), or screw(s), as well as corresponding means 7 for cooling the motor.
  • This provides a plant and method which allows the extrusion in a continuous cycle, and therefore in a particularly advantageous manner, of a respective film, in tubular or flat sheet form.

Abstract

L'invention concerne une installation(10) de fabrication d'un film plastique (11), en particulier une feuille tubulaire ou plate, destinée de préférence à fabriquer des sacs, des poches et des articles similaires, comprenant un moyen (12) de formation du film (11) sous la forme d'une bulle (15) à partir d'une masse fondue respective de matière plastique, qui est introduite dans le moyen de formation (12) par un moyen correspondant (14) pour l'extrusion d'une matière première relative (13), qui comprend une mélangeuse-extrudeuse(18).
PCT/IB2015/057872 2014-10-16 2015-10-14 Installation et procédé de fabrication d'un film plastique WO2016059572A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO2014A000564 2014-10-16
ITBO20140564 2014-10-16

Publications (2)

Publication Number Publication Date
WO2016059572A2 true WO2016059572A2 (fr) 2016-04-21
WO2016059572A3 WO2016059572A3 (fr) 2016-06-09

Family

ID=52000920

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/057872 WO2016059572A2 (fr) 2014-10-16 2015-10-14 Installation et procédé de fabrication d'un film plastique

Country Status (1)

Country Link
WO (1) WO2016059572A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108407254A (zh) * 2018-03-15 2018-08-17 苏州金韦尔机械有限公司 双螺杆挤出生产线及其制造pp建筑模板的方法
WO2023116984A1 (fr) * 2021-12-22 2023-06-29 Reifenhäuser GmbH & Co. KG Maschinenfabrik Installation de films de soufflage et procédé de fabrication d'une bande de film

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3712749C1 (de) * 1987-04-15 1988-07-07 Berstorff Gmbh Masch Hermann Verwendung eines Sekundaerextruders einer Tandemanlage zum Kuehlen einer in einem Primaerextruder hergestellten Kunststoff-Treibmittelgemischschmelze
ATE301685T1 (de) * 1998-03-30 2005-08-15 Sealed Air Corp Darstellung von polyalkylenterephthalatfilmen mit geringerer gasdurchlässigkeit durch spannungsinduzierte kristallisation
EP2631060A1 (fr) * 2012-02-23 2013-08-28 Plastiques et Tissages De Luneray Societe Par Actions Simplifiee Procédé de basse pression de préparation d'un film polymère par extrusion-soufflage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108407254A (zh) * 2018-03-15 2018-08-17 苏州金韦尔机械有限公司 双螺杆挤出生产线及其制造pp建筑模板的方法
CN108407254B (zh) * 2018-03-15 2020-07-31 苏州金韦尔机械有限公司 双螺杆挤出生产线及其制造pp建筑模板的方法
WO2023116984A1 (fr) * 2021-12-22 2023-06-29 Reifenhäuser GmbH & Co. KG Maschinenfabrik Installation de films de soufflage et procédé de fabrication d'une bande de film

Also Published As

Publication number Publication date
WO2016059572A3 (fr) 2016-06-09

Similar Documents

Publication Publication Date Title
TWI658921B (zh) 製造填充高分子複合材料的裝置及其方法
CN102470597B (zh) 挤出发泡成形用成形材料及其制造方法、使用所述成形材料制造的木质发泡成形体以及所述木质发泡成形体的制造方法和制造装置
DE202016101935U1 (de) Extrusionsanlage zur Herstellung von Formstücken aus Kunststoffen
CN102230230A (zh) 一种废旧塑料一步法拉丝编织袋生产方法
JP2019065092A (ja) 造粒機及び造粒方法
US20230028139A1 (en) Method for the devulcanization of a vulcanized rubber mixture, device for carrying out the method and use of the device for the devulcanization of a vulcanized rubber mixture
WO2016059572A2 (fr) Installation et procédé de fabrication d'un film plastique
CN103407141B (zh) 一种多层共挤片材机
EP2631060A1 (fr) Procédé de basse pression de préparation d'un film polymère par extrusion-soufflage
CN102601886B (zh) 石头纸母粒挤出造粒机组
JP2021137979A (ja) 混練装置
Gardner et al. Extrusion of wood plastic composites
CN207373508U (zh) 一种双阶自动上料水下切料挤出造粒机组
DE102005051341B4 (de) Verfahren zur PET-Aufbereitung
WO2019030611A1 (fr) Procédé et appareil pour le recyclage de déchets plastiques mélangés
CN105128370A (zh) 一种高柔软性bopp薄膜的制备方法
CN100473516C (zh) 聚烯烃系列树脂膜、其制备用的组合物、其制备用的组合物的制备方法以及其制备用的设备
MX2012014330A (es) Dispositivo para procesar material por medio de mezcla y/o plastificacion.
US9440374B2 (en) Device and method for producing polymer agglomerates
CN101417501A (zh) 一种塑木混炼挤出机
CN212826747U (zh) 生产聚乳酸淀粉颗粒的螺杆组件
JP2005096100A (ja) ゴムの成形加工方法およびゴムの成形加工装置
KR101699727B1 (ko) 바이오 플라스틱 생산 시스템 및 제조 방법
CN212826718U (zh) 一种pet挤出系统
JPS61266222A (ja) 押出成形方法及びそのための装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15800963

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15800963

Country of ref document: EP

Kind code of ref document: A2