WO2009143663A1 - 应用环保材料制成收缩胶膜的制法改良及其装置 - Google Patents

应用环保材料制成收缩胶膜的制法改良及其装置 Download PDF

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Publication number
WO2009143663A1
WO2009143663A1 PCT/CN2008/001787 CN2008001787W WO2009143663A1 WO 2009143663 A1 WO2009143663 A1 WO 2009143663A1 CN 2008001787 W CN2008001787 W CN 2008001787W WO 2009143663 A1 WO2009143663 A1 WO 2009143663A1
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WO
WIPO (PCT)
Prior art keywords
film
water
heating
tubular
cooling
Prior art date
Application number
PCT/CN2008/001787
Other languages
English (en)
French (fr)
Inventor
杨启赞
Original Assignee
Yang Chi-Tsan
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
Priority to US12/991,936 priority Critical patent/US20110068516A1/en
Application filed by Yang Chi-Tsan filed Critical Yang Chi-Tsan
Priority to KR1020107028180A priority patent/KR101291376B1/ko
Publication of WO2009143663A1 publication Critical patent/WO2009143663A1/zh

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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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/18—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using several blowing steps
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6604—Thermal conditioning of the blown article
    • B29C49/6605—Heating the article, e.g. for hot fill
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • B29C2035/1616—Cooling using liquids
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/64—Heating or cooling preforms, parisons or blown articles
    • B29C49/6604—Thermal conditioning of the blown article
    • B29C2049/6606—Cooling the 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • 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
    • 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
    • B29K2067/00—Use of polyesters 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B29K2067/04—Polyesters derived from hydroxycarboxylic acids
    • B29K2067/046—PLA, i.e. polylactic acid or polylactide
    • 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
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/256—Sheets, plates, blanks or films

Definitions

  • the invention relates to a method for preparing a film and a device for manufacturing the film, in particular to OPS, PET and
  • the shrink film is formed by using a blow molding machine with a PVC material to form a tubular film, and then directly winding up; the film made of the PVC material itself is already tough, and the material is made of this material.
  • the shrink film has been used for many years, and its use range includes coating the outer surface of the container after surface printing, and wrapping it around the container by heat shrinking, as a product advertisement and labeling effect.
  • the object of the present invention is to provide a method for improving the production of a shrink film by using an environmentally friendly material and a device thereof, which solve the following problems:
  • the aforementioned environmentally friendly material is excellent in stretchability, and the thickness of the formed film is stretched by the molding process, which causes the thickness to be inconsistent and even causes cracking.
  • the technical solution adopted by the present invention includes:
  • a method for improving shrinkage film by using an environmentally friendly material wherein the tubular rubber mold is formed by extrusion molding of a blow molding machine, and comprises the following steps:
  • the folded film is reheated by the third step auxiliary heating device to compensate for the temperature dropped by the mixed water temperature, so as to prevent the folded film from sticking to each other and setting, so as to facilitate smooth and uniform air blowing expansion;
  • the softened folded film is formed by blowing to form a tubular film of a hook;
  • the tubular film is further formed by folding the front side of the crease through the roller to form a folded film, and is finished at the end.
  • the forced cooling device of the first step of the present invention may be a cooling liquid or air cooling, and the temperature is preferably controlled to be less than 20 ° C according to the thickness of the blown tubular film, so that the folded rubber is The membrane is cooled and shaped by a forced cooling device to enhance its toughness.
  • the second step heating softening device of the present invention comprises a hot water container or a heating box provided between about 70 and 85 ° C, and the first group of heaters is below the bit transfer roller group. After the heating film is softened by heating, it is transported by a transmission roller group to facilitate air blowing expansion.
  • the third step auxiliary heating device of the present invention is characterized in that a water dividing partition wall is arranged above the conveying roller, and a second array of heaters is arranged in the same group to raise the water temperature in the water dividing partition to provide the The air-expanded tubular film travels between the two, avoiding the sticking phenomenon caused by the excessive heating of the first group of heaters when the heating is softened in the second step, so that the mixing temperature through the blowing rise interval is low at the working temperature.
  • the second set of heaters is used to raise the temperature in the water dividing partition of the travel section, and the auxiliary heating control in the OPS material is about 75-78.
  • C PET material auxiliary heating control is about 80 ⁇ 83.
  • the rapid cooling device inserts the tubular film into a rapid cooling mold tube, and the tubular film is again shaped to improve the toughness and heat shrinkage of the tubular film.
  • a hollow cooling water flow path is provided in the pipe wall, and the cooling is performed.
  • the water flow channel is provided with an inlet pipe and an outlet pipe, and the water temperature is preferably 15 ° C or less.
  • the outer edge of the core of the mold is a spiral groove upward from the bottom end at each suitable angle for the entry point of the environmentally-friendly material, and the environmentally friendly material is pushed into the mold through the blow molding machine.
  • the entrance hole of the heart is evenly stirred by the spiral groove of the mold core, and then the tubular gap between the die core and the die is thin, and the air is expanded by the blow hole at the center of the die to form a uniform wall thickness. To improve the uniformity of its membrane wall.
  • the invention is located between the first step forced cooling device and the second step heating softening device, and a relay roller group is arranged to convey the folded folding film through the relay roller group to reduce the folding of the conveying roller The tension of the film prevents the folded film from being stretched to reduce its shrinkage.
  • the technical solution adopted by the present invention further includes:
  • a device for producing a shrink film by using an environmentally friendly material characterized in that: the device comprises: a blow molding machine, which is a core outer edge of a molding die for blowing a tubular film, from the bottom end At each suitable angle, the starting point of the environmentally-friendly material entering the hole is upwardly turned into a spiral groove, and the environmentally-friendly material is pushed into the entrance hole of the mold core through a blow molding machine, and is heated by the molding die.
  • a blow molding machine which is a core outer edge of a molding die for blowing a tubular film, from the bottom end At each suitable angle, the starting point of the environmentally-friendly material entering the hole is upwardly turned into a spiral groove, and the environmentally-friendly material is pushed into the entrance hole of the mold core through a blow molding machine, and is heated by the molding die.
  • the heating of the device causes the environmentally-friendly material to travel between the spiral grooves of the core, and is heated and melted on the one hand, and uniformly stirred on the one hand, and then a tubular film is formed by the slit between the core and the die to form a uniform a tubular die having a thickness; a forced cooling device disposed between the molding die of the blow molding machine and the heating softening device of the second step, wherein the forced cooling device is filled with a cooling liquid or air cooling, and the built-in cooling device is provided with a cooling liquid or a gas cooling device.
  • a positioning roller group so that the folded film enters the positioning roller group and is forced to be cooled and cooled by a cooling liquid or air cooling; a relay roller group is set in the forced cooling device and the third step is heated softly. Between the transfer roller sets;
  • a heating softening device is disposed between the relay roller group and the auxiliary heating device of the third step, filled with heating softening water, and provided with a first group of heaters at the bottom, above the first group of heaters
  • a transmission roller set is provided;
  • An auxiliary heating device is disposed between the rapid cooling device of the fourth step and the transfer roller set of the heating softening device of the second step;
  • the auxiliary heating device divides the heated demineralized water by a water dividing partition, and is provided with a second array of second heaters in the water dividing partition wall, and the second heater pair is applied
  • the heated demineralized water in the water dividing partition wall is heated and softened to fold the adhesive film to compensate for the shortage of the mixed water temperature, so that the folded adhesive film maintains a softened state, and at the same time, the tubular rubber film is formed by blowing air to smoothly expand;
  • a rapid cooling device which is located behind the auxiliary heating device in the third step, which is a rapid cooling
  • a hollow cooling water flow path is provided in the tube wall of the mold tube, and the blown air-expanded tubular film is rapidly cooled to form a shrink film having better toughness.
  • the present invention has the following beneficial effects:
  • the invention adopts OPS, PET and PLA environmental protection materials, and has the environmental protection effect of natural decomposition; 2.
  • the invention adds a third step auxiliary heating device, and by means of compensation heating, the folded film is easy to be blown and expanded into a tubular film;
  • the film made of the environmentally friendly material has toughness and increases its shrinkage rate.
  • FIG. 1 is a block diagram showing the manufacturing process of the present invention
  • Figure 2A is a structural view and a partial cross-sectional view of a molding die of the present invention.
  • 2B is a sectional view showing the structure of a molding die of the present invention.
  • 2C is a schematic view showing the appearance of a molding die assembly of the present invention. and an embodiment
  • FIG. 3 is a schematic diagram of a manufacturing process of an embodiment of the present invention.
  • Figure 4 is a diagram showing the state of the tubular film passing through the rapid cooling die in the third step of the present invention.
  • Figure 4A is a perspective sectional view showing a rapid cooling mold tube of the present invention.
  • Figure 4B is a cross-sectional view of the rapid cooling mold tube of the present invention.
  • said second step heating softening device 4 is provided with a first group of heaters 41 disposed below the folding film 2, entering a hot water of a suitable temperature and entering the transfer roller group 42
  • the folding film 2 is made to have the temperature of the first group of heaters 41 higher than the average temperature of the normal heated demineralized water 40, and then the pressure of the transport roller group 42 is pressed to make the folded film 2, Traveling to the upper side of the transport roller group 42, if directly entering between the rapid cold mold tube 61 of the rapid cooling device 6 of the fourth step and the transport roller group 42, the water temperature is lowered due to the water mixing temperature relationship,
  • the folding film 2 produces a mutual sticking phenomenon, which makes it impossible (or difficult) to expand the pasting position into the tubular film 2 when blowing; therefore, the auxiliary heating device 5 of the third step is added to compensate the mixed water temperature. Insufficient, the folded film 2 is maintained in a softened state, and the tubular film 2 is formed by blowing air to smoothly expand.
  • the rapid cooling 6 of the fourth step is further performed, and the blown expanded tubular film 2 is rapidly cooled by the lower temperature in the rapid cooling mold 61 (Fig. 4A, Fig. 4B) to make it better.
  • Resilience shrinkage mode and increase its shrinkage, after winding up to provide the user to cut only the two sides of the crease 21 on the surface to form two uniform thickness film for printing and packaging After coating the container, it improves the heat shrinkage quality and has a non-toxic environmental protection effect.
  • the folding film 2, the first step forced cooling device 3 can be liquid cooling or air cooling 301, and the temperature is according to the blow molding film 2 The thickness is adjusted, and it is preferable to control the temperature below 20 ° C, so that the folded film 2 is cooled and shaped by the forced cooling device 3 to enhance the toughness.
  • the second step of heating and softening device 4 is formed by a hot water container having a temperature between about 70 and 85 ° C, so that the folded film 2 is It is softened in the heating softening device 4 to facilitate the blow molding of the tubular film 2.
  • a third step auxiliary heating device 5 is disposed between the rapid cooling tube 61 and the transmission roller group 42.
  • the auxiliary heating device 5 is a water dividing partition wall. 51, the heating and demineralizing water 40 is partitioned, and a plurality of second heaters 52 are disposed in the water dividing partition wall 51, and the heating in the water dividing partition wall 51 is applied by the second array of heaters 52.
  • the softened water 40 is heated and softened to fold the adhesive film 2 to compensate for the shortage of the mixed water temperature, so that the folded film 2 is maintained in a softened state, and at the same time, the tubular film 2 is smoothly expanded by blowing air, and then enters the fourth stage.
  • the step rapid cooling device 6 rapidly cools the blown-expanded tubular film 2 by a relatively low temperature in the rapid cooling mold 61 (Figs. 4A and 4B) to form a shrink film having a better toughness.
  • the reheating temperature in the water dividing partition 51 is different from the material, and the reheating softening temperature is adjusted, such as OPS (Oriented Polystyrene) reheating and softening temperature control.
  • OPS Oriented Polystyrene
  • PET polyethylene terephthalate
  • PLA polylactide, commonly known as polylactic acid
  • the heating softening temperature is controlled to be between about 65 and 68 ° C, so that the folded film 2 is softened, and does not cause mutual adhesion when the air is expanded, so as to facilitate uniform smooth blowing and expansion into a tubular shape.
  • Film 2 is controlled between about 65 and 68 ° C, so that the folded film 2 is softened, and does not cause mutual adhesion when the air is expanded, so as to facilitate uniform smooth blowing and expansion into a tubular shape.
  • the rapid cooling device 6 of the fourth step is to insert the blown tubular film 2 into a rapid cooling mold 61, so that the tubular film 2 is again Shaped to enhance the toughness and heat shrinkage of the tubular film.
  • the rapid cooling mold tube 61 is provided with a hollow cooling water flow path 611 in the pipe wall, and the cooling water flow path 611 is provided with an inlet pipe 612 and an outlet pipe.
  • the water pipe 613 preferably has a water temperature of 15 ° C or less, and flows in the hollow cooling water flow path 611 by the water inlet pipe 612 and the water outlet pipe 613.
  • the outer edge of the die core All is the environmentally friendly material 1 entering the hole A12 from the bottom end at every appropriate angle.
  • the starting point is upwardly connected to the spiral groove A13, and the environmentally-friendly material 1 is pushed into the inlet hole A12 of the mold core All through the blow molding machine A, and is heated by the heater A2 in the molding die A1.
  • the environmentally-friendly material 1 is made to travel between the spiral grooves A13 of the mold core Al1, on the one hand, and on the other hand, the mixture is uniformly stirred, and then the slit A14 between the core A and the die A1 is formed into a tubular film 2 to form a tubular film 2
  • a tubular mold 2 of a uniform thickness of the membrane wall 21 is used to increase its shrinkage.
  • a relay roller group B is disposed, so that the folded film 2 is passed through the motor M.
  • the driving relay roller sets B, B are conveyed by rolling to reduce the pulling force of the conveying roller 42 on the folded film 2, and the folding film 2 is prevented from being stretched to reduce the shrinkage rate.
  • a blow molding machine A is a periphery of the core of the mold A1 of the forming die A1 of the blow-molded tubular film 2.
  • the bottom end is at the starting point of the environmentally-friendly material 1 entering the hole A12 from the bottom end, and is turned upside down by the spiral groove A13, and the environmentally-friendly material 1 is pushed into the mold core Al1 through the air blowing machine A.
  • the inlet hole A12 through the heating of the heater A2 in the forming die A1, causes the eco-friendly material 1 to travel between the spiral grooves A13 of the core Al1, on the one hand, heating and melting, on the one hand, stirring evenly, and then
  • the slit A14 between the core Al1 and the die A1 is a tubular film 2 to form a tubular die 2 of uniform thickness to increase the shrinkage ratio thereof;
  • a forced cooling device 3 is disposed between the forming die A1 of the blow molding machine A and the second step heating softening device 4, wherein the forced cooling device 3 is filled with liquid cooling or air cooling and cooling 301,
  • the positioning roller set 31 is arranged to allow the folded film 2 to enter the positioning roller set 31 and be forced to cool and set by liquid cooling or air cooling and cooling 301;
  • a relay roller group B, B is disposed between the forced cooling device 3 and the transmission roller group 42 of the third step of heating softening 4;
  • a heating softening device 4 is disposed between the relay roller groups B, B and the auxiliary heating device 5 of the third step, filled with heating softening water 40, and provided with a first group of heaters 41 at the bottom. Above the heater is provided with a transmission roller set 42;
  • An auxiliary heating device 5 is disposed between the rapid cooling device 6 of the fourth step and the transmission roller group 42 of the heating softening device 4 of the second step; the auxiliary heating device 5 is a water dividing device
  • the partition wall 51 separates the heated demineralized water 40, and a plurality of second heaters 52 are disposed in the water dividing partition wall 51, and the plurality of second heaters 52 are applied to the water dividing partition wall 51. Heating and softening water 40 and then heating and softening the folding film 2, to compensate for the lack of mixed water temperature, so that the folded film 2, maintaining a softened state, while blowing to form a tubular film 2 by smooth expansion;
  • a rapid cooling device 6 is disposed at the rear of the auxiliary heating device 5 in the third step, and is provided with a hollow cooling water flow path 61 1 in the wall of a rapid cooling mold 61 to expand the blowing gas.
  • the tubular film 2 is rapidly cooled to produce a better tough shrinkage flaw.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Description

应用环保材料制成收缩胶膜的制法改良及其装置 技术领域
本发明涉及一种胶膜的制法以及制造胶膜的装置， 特別涉及 OPS、 PET和
PLA胶膜的制法。 背景技术
一般收缩胶膜， 是以 PVC材料应用吹气成型机成型一管状胶膜， 其后直接 卷收完成； 由于所述的 PVC材料所制成的胶膜本身已然具韧性， 遂以此材料制 成的收缩膜已行之多年， 其使用范围包括表面印刷后包覆容器外表面， 经热收 缩在容器周围包覆， 以做为产品广告以及标示作用。
由于前述的 PVC材料因逐渐被禁止使用， 乃发展出各种环保材料， 如 OPS(oriented polystyrene, 取向聚苯乙烯）、 PET (聚对苯二曱酸乙二醇酯）、 PLA (聚丙交酯， 俗称聚乳酸） ， 希望能替代所述的 PVC材料， 以做为收缩胶膜的 用途， 由于所述的环保材料其中的 OPS、 PET具有无毒特性， 以及 PLA具有自 然分解， 且无毒性， 因此， 不会造成二次污染， 为政府所提倡的重点发展产业。 发明内容
针对现有技术的不足， 本发明的目的在于： 提供一种应用环保材料制成收 缩胶膜的制法改良及其装置， 解决下述问题：
1.由于所迷的胶膜是使用 PVC材料吹气成型， 其 PVC材料本身无法分解， 将产生二次污染， 对环境造成伤害甚巨， 因此， 所述的 PVC材料逐渐遭到淘汰 命运。
2.所述的 PVC材料在吹气成型机内加热溶融时， 因散发出有毒气体， 将造 成人体与环境的污染。
3.若使用 OPS、 PET、 PLA环保材料， 应用一般 PVC吹气成型机成型管状 胶膜， 则因伸展特性韧度不足， 将会使所述的成型的管状胶膜因传输卷绕行进 间被拉伸， 甚至被扯断， 致使不合格率相当高。
4.前述的环保材料，其因伸展性极佳，在成型的胶膜厚度因成型行进间的拉 伸， 促使所述的厚度无法平均， 甚至造成破裂现象。 为实现上述目的， 本发明采用的技术方案包括：
一种应用环保材料制成收缩胶膜的制法改良， 所述的管状胶模是由吹气成 型机经挤压吹气成型， 其特征在于， 包括以下步骤：
a.应用 OPS、 PET或 PLA坏保材料， 以吹气成型机将其成型一管状胶膜后， 再滚压形成一折叠胶膜；
b.进入第一步骤强迫降温装置， 使所述的折叠胶膜产生较强的韧性；
c.再进入第二步骤加热软化装置， 应用底部所设的第一组加热器进行加热， 经传输滚轮组使其快速软化；
d.所述的折叠胶膜经第三步骤辅助加热装置， 进行再加热， 以补偿因混合水 温而下降的温度， 以防止折叠胶膜相互粘贴且定型， 以利顺利均匀吹气扩张； e.所述的维持软化的折叠胶膜， 经吹气形成均勾的管状胶膜；
e.而后再进入第四步骤急速冷却装置，凭借急速冷却模管将所述的成型的管 状胶膜制成较佳韧性， 并提升其收缩率；
f.再将所述的管状胶膜以先前两侧折痕经滚轮而形成折叠胶膜， 并在最终端 予以卷》 完成。
本发明第一步骤的强迫降温装置， 可为降温液体或气冷， 其温度则视所述 的吹气成型管状胶膜的厚度可控制在 20°C以下为较佳， 使所述的折叠胶膜经强 迫降温装置予以降温定型后提升其韧性。
本发明第二步骤加热软化装置，其是以一设有约 70~85 °C之间的热水容器或 加热箱所构成， 所述的第一组加热器是位传输滚轮组的下方， 使所述的折叠胶 膜进入加热软化后， 通过传输滚轮组辗压传输， 以利吹气扩张。
本发明第三步骤辅助加热装置， 是在传输滚轮上方设一分水隔墙， 其内设 有复数组第二组加热器， 以提升所述的分水隔墙内的水温达以提供所述的被吹 气扩张的管状胶膜行进间， 避免因进入第二步驟加热软化时受第一组加热器的 过度加热所产生粘贴现象， 使其经由吹气上升区间的混合温度低在工作温度下， 应用第二组加热器在所述的行进区间的分水隔墙内提升温度， 在 OPS材料辅助 加热控制在约 75~78。C、 PET材料辅助加热控制在约 80~83。C、 PLA材料辅助加 热控制在约 65〜68°C , 以利扩张吹气成型， 以提升吹气成型的顺畅性。
本发明第四步驟急速冷却装置， 是将管状胶膜进入一急速冷却模管内， 使 所述的管状胶膜再次定型， 以提升所述的管状胶膜的韧性以及热收缩率。
本发明的前述急速冷却模管， 其管壁内设有中空冷却水流道， 所述的冷却 水流道设有进水管与出水管， 其水温为 15 °C以下为较佳。
本发明的吹气成型模头， 其模心外缘自底端在每一适当角度为环保材料进 入孔的起始点， 往上呈一螺旋沟， 所迷的环保材料经由吹气成型机押入模心的 进入孔， 通过模心的螺旋沟搅拌均匀， 再由模心与模头间的缝细呈管状胶膜， 同时通过模心中心吹气孔吹气扩张， 以形成一均勾膜壁厚度， 以提升其膜壁的 均匀度。
本发明位于第一步骤强迫降温装置与第二步骤加热软化装置之间， 设一中 继滚轮组， 使所迷的折叠胶膜经由中继滚轮组的输送， 以减轻传输滚轮对所述 的折叠胶膜的拉力， 避免折叠胶膜被拉伸而降低其收缩率。
为实现上述目的， 本发明釆用的技术方案还包括：
—种应用环保材料制成收缩胶膜的装置， 其特征在于， 所述的装置包括： 一吹气成型机， 是在吹气成型管状胶膜的成型模头的模心外缘， 自底端在 每一适当角度为环保材料进入孔的起始点， 往上呈一并靠螺旋沟， 所述的环保 材料经由吹气成型机押入所述的模心的进入孔， 通过成型模头内的加热器的加 热， 使所述的环保材料行进在模心的螺旋沟之间， 一方面加热熔融、 一方面搅 拌均匀， 再由模心与模头间的缝细呈管状胶膜， 以形成一均匀厚度的管状胶模； 一强迫降温装置， 是设在吹气成型机的成型模头与第二步骤加热软化装置 之间， 所述的强迫降温装置是装填有降温液体或气冷， 其内设有定位滚轮组， 使所述的折叠胶膜进入所述的定位滚轮组并受降温液体或气冷强迫降温定型； 一中继滚轮组， 是设在强迫降温装置与第三步骤加热软化的传输滚轮组之 间；
一加热软化装置， 是设在中继滚轮组与第三步骤的辅助加热装置之间， 其 内充填加热软化水， 且在底部设有第一组加热器， 所述的第一組加热器上方设 有传输滚轮組；
一辅助加热装置， 是设在所述的第四步骤的急速冷却装置与第二步骤的加 热软化装置的传输滚轮组之间； 以及
所述的辅助加热装置是以一分水隔墙将加热软化水予以分隔， 并在所述的 分水隔墙内设有复数组第二加热器， 应用所述的复数組第二加热器对分水隔墙 内的加热软化水再加热软化折叠胶膜， 以补偿混合水温的不足， 使所述的折叠 胶膜维持软化状态， 同时通过吹气以顺利扩张形成管状胶膜；
—急速冷却装置， 是设在第三步骤辅助加热装置的后方， 其是以一急速冷 却模管的管壁内设有中空冷却水流道， 而将所述的吹气扩张的管状胶膜急速冷 却而制成较佳韧性的收缩膜。
与现有技术相比较， 本发明具有的有益效果是：
1.本发明采用 OPS、 PET、 PLA环保材料， 具有自然分解之环保效果； 2.本发明增加了第三步骤辅助加热装置， 凭借补偿加热， 使折叠胶膜易于吹 气扩张为管状胶膜；
3.再通过第四步骤急速冷却装置， 使该环保材料制成的胶膜具有韧性， 并提 升其收缩率。 附图说明
图 1为本发明制造流程方块示意图；
图 2A为本发明的成型模头结构图以及部分断面图；
图 2B为本发明的成型模头结构组合剖面图；
图 2C为本发明的成型模头組合外观示意图以及实施例图；
图 3为本发明实施例制造流程示意图；
图 4为本发明第三步骤管状胶膜通过急速冷却模管状态图；
图 4A为本发明急速冷却模管立体断面图；
图 4B为本发明急速冷却模管剖面图。
附图标记说明： 环保材料 1 ; 吹气成型机 A; 管状胶膜 2; 折叠胶膜 2，； 折 痕 21; 第一步骤强迫降温装置 3; 定位滚轮组 31 ; 液体降温或气冷降温 301; 第二步驟加热软化装置 4; 加热软化水 40; 第一组加热器 41 ; 传输滚轮组 42; 第三步驟辅助加热装置 5; 分水隔墙 51; 第二组加热器 52; 第四步骤急速冷却 装置 6; 急速冷却模管 61 ; 中空冷却水流道 611 ; 进水管 612; 出水管 613; 卷 收 7; 成型模头 A1; 模心 Al l; 进入孔 A12; 螺旋沟 A13; 缝细 A14; 加热器 A2; 中继滚轮组 Β、 Β'; 马达 Μ。 具体实施方式
为使贵委员能进一步了解本发明的技术内容， 兹以实施例详迷在后： 请参阅图 1 ~图 3、 图 3Α所示， 是以 OPS、 PET, PLA等环保材料 1 , 以 吹气成型机 A将其成型一管状胶膜 2后， 再滚压形成一折叠胶膜 2，， 经第一步 骤的强迫降温装置 3，使所述的折叠胶膜 2，产生较强的韧性，再进入第二步骤的 加热软化装置 4; 所述的第二步骤加热软化装置 4, 是在折叠胶膜 2，进入一适当 温度的热水而进入传输滚轮组 42之间的下方设有第一组加热器 41，使所述的折 叠胶膜 2，因靠近第一组加热器 41的温度高于正常的加热软化水 40的温度平均 值， 然后经传输滚轮组 42的辗压， 使所述的折叠胶膜 2，行进至传输滚轮组 42 上方， 若直接进入第四步骤的急速冷却装置 6的急速冷模管 61与所述的传输滚 轮组 42之间， 因水混合温度关系而令水温下降， 将使所述的折叠胶膜 2，产生相 互粘贴定型现象， 造成吹气时无法 （或困难）将所述的粘贴位置扩张成管状胶 膜 2; 因此， 增加第三步骤的辅助加热装置 5， 以补偿混合水温的不足， 使所述 的折叠胶膜 2，维持软化状态， 同时通过吹气以顺利扩张形成管状胶膜 2。
而后再进入第四步骤的急速冷却 6，凭借急速冷却模管 61 (如图 4A、图 4B ) 内的较低温度， 将所述的吹气扩张的管状胶膜 2急速降温而制成较佳韧性的收 缩模， 并提升其收缩率， 经卷收 7后， 以提供使用者在表面上仅进行两侧折痕 21部分的裁切， 以形成两片厚度均匀的胶膜， 供印刷与包覆容器后， 提升其加 热收缩品质， 且具有无毒性的环保效果。
请参阅图 2、 图 3所示， 所述的折叠胶膜 2，经第一步骤强迫降温装置 3可为 液体降温或气冷降温 301 , 其温度则依所述的吹气成型胶膜 2的厚度而调整， 控 制在 20°C以下为较佳， 使所述的折叠胶膜 2，经强迫降温装置 3予以降温定型后 提升其韧性。
请参阅图 3〜图 4所示，所述的第二步骤加热软化装置 4,是以一设有约 70~85 °C之间的热水容器所构成， 使所述的折叠胶膜 2，进入所述的加热软化装置 4内 予以软化， 以利于吹气成型管状胶膜 2。
请参阅图 3所示， 在所述的急速冷模管 61与所述的传输滚轮组 42之间设 一第三步骤辅助加热装置 5， 所述的辅助加热装置 5是以一分水隔墙 51将加热 软化水 40予以分隔， 并在所述的分水隔墙 51内设有复数組第二加热器 52, 应 用所述的复数组第二加热器 52对分水隔墙 51内的加热软化水 40再加热软化折 叠胶膜 2，， 以补偿混合水温的不足， 使所述的折叠胶膜 2，维持软化状态， 同时 通过吹气以顺利扩张形成管状胶膜 2 , 而后再进入第四步骤急速冷却装置 6 , 凭 借急速冷却模管 61 (如图 4A、 图 4B ) 内的较低温度， 将所述的吹气扩张的管 状胶膜 2急速降温而制成较佳韧性的收縮膜。
前述所使用的环保材料， 其中， 位于所述的分水隔墙 51 内的再加热温度， 则一材料不同的调整再加热软化温度，如 OPS (取向聚苯乙烯)再加热软化温度控 制在约 75〜78°C之间、 PET (聚对苯二曱酸乙二醇酯)再加热软化温度控制在约 80~83 °C之间、 PLA (聚丙交酯， 俗称聚乳酸）再加热软化温度控制在约 65〜68 °C之间为较佳， 使所述的折叠胶膜 2，软化下， 在吹气扩张时不会产生相互粘贴 状态， 以利均匀顺利吹气扩张为管状胶膜 2。
请参阅图 1、 图 3 ~图 4所示， 第四步骤的急速冷却装置 6， 是将吹气后的 管状胶膜 2进入一急速冷却模管 61内， 使所述的管状胶膜 2再次定型， 以提升 所述的管状胶膜的韧性以及热收缩率。
请参阅图 3、 图 4以及图 4A、 图 4B所示， 所述的急速冷却模管 61其管壁 内设有中空冷却水流道 611 , 所述的冷却水流道 611设有进水管 612与出水管 613 , 其水温为 15°C以下为较佳， 且凭借进水管 612与出水管 613流动在所述的 中空冷却水流道 611内。
请参阅图 3以及图 2A ~图 2C所示， 在实施例中的充气成型机 A的成型模 头 A1 ,其模心 All外缘自底端在每一适当角度为环保材料 1进入孔 A12的起始 点， 往上呈一并靠螺旋沟 A13， 所述的环保材料 1经由吹气成型机 A押入所述 的模心 All的进入孔 A12， 通过成型模头 A1内的加热器 A2的加热， 使所述的 环保材料 1行进在模心 Al l的螺旋沟 A13之间一方面加热、 一方面搅拌均匀， 再由模心 All与模头 A1间的缝细 A14呈管状胶膜 2,以形成一均匀厚度的膜壁 21的管状胶模 2， 以提升其收缩率。
请参阅图 3所示， 所述的第一步驟强迫降温装置 3与第二步骤加热软化装 置 4之间， 设一中继滚轮组^ B，， 使所述的折叠胶膜 2，经由马达 M传动中继 滚轮组 B、 B，的辗压转动输送，以减轻传输滚轮 42对所述的折叠胶膜 2，的拉力， 避免折叠胶膜 2，被拉伸而降低其收缩率。
请参阅图 2A ~图 2C、 图 3、 图 4以及图 4A、 图 4B所示， 一吹气成型机 A, 是在吹气成型管状胶膜 2的成型模头 A1的模心 Al l外缘， 自底端在每一适当 角度为环保材料 1进入孔 A12的起始点， 往上呈一并靠螺旋沟 A13 , 所述的环 保材料 1经由吹气成型机 A押入所述的模心 Al l的进入孔 A12， 通过成型模头 A1 内的加热器 A2的加热， 使所述的环保材料 1行进在模心 Al l的螺旋沟 A13 之间， 一方面加热熔融、 一方面搅拌均匀， 再由模心 Al l与模头 A1间的缝细 A14呈管状胶膜 2, 以形成一均匀厚度的管状胶模 2, 以提升其收缩率；
一强迫降温装置 3，是设在吹气成型机 A的成型模头 A1与第二步骤加热软 化装置 4之间， 所述的强迫降温装置 3是装填有液体降温或气冷降温 301 , 其内 设有定位滚轮組 31 ,使所述的折叠胶膜 2，进入所述的定位滚轮组 31并受液体降 温或气冷降温 301强迫降温定型；
一中继滚轮组 B、 B，， 是设强迫降温装置 3与第三步骤加热软化 4的传输 滚轮组 42之间；
一加热软化装置 4 , 是设在中继滚轮组 B、 B，与第三步骤的辅助加热装置 5 之间， 其内充填加热软化水 40, 且在底部设有第一组加热器 41 , 所述的加热器 上方设有传输滚轮组 42;
一辅助加热装置 5，是设在所述的第四步糠的急速冷却装置 6与第二步骤的 加热软化装置 4的传输滚轮組 42之间； 所述的辅助加热装置 5是以一分水隔墙 51将加热软化水 40予以分隔， 并在所述的分水隔墙 51内设有复数组第二加热 器 52,应用所述的复数组第二加热器 52对分水隔墙 51内的加热软化水 40再加 热软化折叠胶膜 2，， 以补偿混合水温的不足， 使所述的折叠胶膜 2，维持软化状 态， 同时通过吹气以顺利扩张形成管状胶膜 2;
一急速冷却装置 6 , 是设在第三步骤辅助加热装置 5的后方， 其是以一急速 冷却模管 61的管壁内设有中空冷却水流道 61 1， 而将所述的吹气扩张的管状胶 膜 2急速冷却而制成较佳韧性的收缩朦。
以上说明对本发明而言只是说明性的， 而非限制性的， 本领域普通技术人员 理解， 在不脱离权利要求所限定的精神和范围的情况下， 可作出许多修改、 变化 或等效， 但都将落入本发明的保护范围之内。

Claims

权利要求
1.一种应用环保材料制成收缩胶膜的制法改良，所述的管状胶模是由吹气成 型机经挤压吹气成型， 其特征在于， 包括以下步骤：
a.应用 OPS、 PET或 PLA环保材料， 以吹气成型机将其成型一管状胶膜后， 再滚压形成一折叠胶膜；
b.进入第一步骤强迫降温装置， 使所述的折叠胶膜产生较强的韧性；
c.再进入第二步骤加热软化装置， 应用底部所设的第一組加热器进行加热， 经传输滚轮组使其快速软化；
d.所述的折叠胶膜经第三步骤辅助加热装置， 进行再加热, 以补偿因混合水 温而下降的温度， 以防止折叠胶膜相互粘贴且定型， 以利顺利均匀吹气扩张； e.所迷的维持软化的折叠胶膜， 经吹气形成均匀的管状胶膜；
e.而后再进入第四步驟急速冷却装置，凭借急速冷却模管将所述的成型的管 状胶膜制成较佳韧性， 并提升其收縮率；
f.再将所迷的管状胶膜以先前两侧折痕经滚轮而形成折叠胶膜， 并在最终端 予以卷收完成。
2.根据权利要求 1所述应用环保材料制成收縮胶膜的制法改良， 其特征在 于： 所述的第一步骤强迫降温装置中采用液体降温或气冷降温， 其温度则依所 述的吹气成型胶膜的厚度而控制在 20°C以下。
3.根据权利要求 1所述应用环保材料制成收缩胶膜的制法改良， 其特征在 于：所述的第二步骤加热软化装置，其充填的加热软化水的温度在 70〜85 °C之间。
4.根据权利要求 1所述应用环保材料制成收缩胶膜的制法改良， 其特征在 于： 所述的第三步骤辅助加热装置， 是设在急速冷模管与所迷的传输滚轮组之 间， 而以一分水隔墙将加热软化水予以分隔， 并在所述的分水隔墙内设有复数 组第二加热器， 应用所述的复数組第二加热器对分水隔墙内的加热软化水再加 热软化折叠胶膜， 以补偿混合水温的不足， 使所迷的折叠胶膜维持软化状态， 同时通过吹气以顺利扩张形成管状胶膜。
5.根据权利要求 4所述应用环保材料制成收缩胶膜的制法改良， 其特征在 于： 所述的笫三步骤辅助加热装置， 其位于所迷的分水隔墙内的再加热温度， 则依材料不同的调整再加热软化温度， 如 OPS再加热软化温度控制在 75~78 °C 之间、 PET再加热软化温度控制在 80~83 °C之间、 PLA再加热软化温度控制在 65~68°C之间，使所述的折叠胶膜软化下，在吹气扩张时不会产生相互粘贴状态， 以利均匀顺利吹气扩张为管状胶膜。
6.4艮据权利要求 1所述应用环保材料制成收缩胶膜的制法改良， 其特征在 于： 所述的第四步骤急速冷却装置， 是以一急速冷却模管设在定位装置的上方， 其管壁内设有中空冷却水流道， 所述的冷却水流道设有进水管与出水管， 其水 温为 15 °C以下， 且凭借进水管与出水管流动在所述的中空冷却水流道内作进出 水流路径。
7.根据权利要求 1所述应用环保材料制成收缩胶膜的制法改良， 其特征在 于： 所述的成型模头的模心外缘自底端在每一适当角度为环保材料进入孔的起 始点， 往上呈一并靠螺旋沟， 所述的环保材料经由吹气成型机押入所述的模心 的进入孔， 通过模心的螺旋沟行进间搅拌均匀， 再由模心与模头间的缝细呈管 状胶膜， 同时通过模心中心吹气孔吹气扩张， 以形成一均勾厚度的膜壁的管状 胶模， 以提升其膜壁的均匀度。
8.根据权利要求 1所述应用环保材料制成收缩胶膜的制法改良， 其特征在 于： 位于第一步骤强迫降温装置与第二步骤加热软化装置之间， 设一中继滚轮 组， 使所述的折叠胶膜经由马达传动中继滚轮组的辗压转动输送， 以减轻传输 滚轮对所述的折叠胶膜的拉力， 避免折叠胶膜被拉伸而降低其收缩率。
9.一种应用环保材料制成收缩胶膜的装置， 其特征在于， 所述的装置包括: 一吹气成型机， 是在吹气成型管状胶膜的成型模头的模心外缘， 自底端在 每一适当角度为环保材料进入孔的起始点， 往上呈一并靠螺旋沟， 所迷的环保 材料经由吹气成型机押入所述的模心的进入孔， 通过成型模头内的加热器的加 热， 使所述的环保材料行进在模心的螺旋沟之间， 一方面加热熔融、 一方面搅 拌均勾， 再由模心与模头间的缝细呈管状胶膜， 以形成一均勾厚度的管状胶模； 一强迫降温装置， 是设在吹气成型机的成型模头与第二步骤加热软化装置 之间， 所迷的强迫降温装置是装填有降温液体或气冷， 其内设有定位滚轮组， 使所迷的折叠胶膜进入所述的定位滚轮组并受降温液体或气冷强迫降温定型； 一中继滚轮组， 是设在强迫降温装置与第三步骤加热软化的传输滚轮组之 间；
一加热软化装置， 是设在中继滚轮组与第三步骤的辅助加热装置之间， 其 内充填加热软化水， 且在底部设有第一组加热器， 所述的第一組加热器上方设 有传输滚轮组；
一辅助加热装置， 是设在所述的第四步骤的急速冷却装置与第二步骤的加 热软化装置的传输滚轮组之间； 以及
所述的辅助加热装置是以一分水隔墙将加热软化水予以分隔， 并在所述的 分水隔墙内设有复数組第二加热器， 应用所迷的复数组第二加热器对分水隔墙 内的加热软化水再加热软化折叠胶膜， 以补偿混合水温的不足， 使所述的折叠 胶膜维持软化状态， 同时通过吹气以顺利扩张形成管状胶膜；
—急速冷却装置， 是设在第三步骤辅助加热装置的后方， 其是以一急速冷 却模管的管壁内设有中空冷却水流道， 而将所述的吹气扩张的管状胶膜急速冷 却而制成较佳韧性的收缩膜。
PCT/CN2008/001787 2008-05-28 2008-10-23 应用环保材料制成收缩胶膜的制法改良及其装置 WO2009143663A1 (zh)

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