WO2006011201A1 - 飽和ポリエステル中空体の加熱結晶化装置及びその加熱方法 - Google Patents
飽和ポリエステル中空体の加熱結晶化装置及びその加熱方法 Download PDFInfo
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- WO2006011201A1 WO2006011201A1 PCT/JP2004/010709 JP2004010709W WO2006011201A1 WO 2006011201 A1 WO2006011201 A1 WO 2006011201A1 JP 2004010709 W JP2004010709 W JP 2004010709W WO 2006011201 A1 WO2006011201 A1 WO 2006011201A1
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- WIPO (PCT)
- Prior art keywords
- heating
- hollow body
- mouth
- light
- neck
- Prior art date
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Classifications
-
- 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
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
- B29B13/023—Half-products, e.g. films, plates
- B29B13/024—Hollow bodies, e.g. tubes or profiles
- B29B13/025—Tube ends
-
- 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
- B29C71/0063—After-treatment of articles without altering their shape; Apparatus therefor for changing crystallisation
-
- 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
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0827—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using UV radiation
-
- 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
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
- B29K2105/258—Tubular
-
- 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
- B29K2995/0041—Crystalline
Definitions
- the present invention relates to a heated crystallization apparatus for a saturated polyester hollow body and a heating method therefor, and more specifically, a bottomed preform made of a saturated polyester such as polyethylene terephthalate or a cap such as a bottle or cup.
- the present invention relates to a heating and crystallization apparatus for a saturated polyester hollow body that heats and crystallizes the mouth and neck to be heated and a heating method thereof.
- a bottle made of a saturated polyester is usually produced by biaxially stretching blow-molding an amorphous bottomed preform formed by injection molding or the like, leaving a portion that should become the mouth and neck. .
- This type of bottle has molecular orientation at the shoulder, body and bottom, and has excellent container properties such as transparency, gas barrier integrity, strength, and impact resistance. Furthermore, these shoulder, body and bottom Bottles that have been heat set have the advantage that these parts are less likely to deform due to shrinkage when hot filled.
- Patent Document 1 a technique for improving the hardness and heat resistance of the mouth and neck by heating and crystallizing the mouth or neck of the preform or container has been proposed.
- Patent Document 2 It has been proposed that after heating at a low temperature in one step, the heating temperature is subsequently increased to cause heating and crystallization (Patent Document 2).
- the conventional heater unit includes a near-infrared heater having a ceramic coating on the half surface on the counter-irradiation side and a reflector.
- This near-infrared heater is provided at two locations in the vertical direction, approximately at the center of the curved surface area of the reflector.
- the reflector used a curved surface obtained by dividing a cylinder into two along the central axis and a tunnel shape extending tangentially from both ends of the curved surface.
- the irradiation light emitted from the near-infrared heater is reflected by the ceramic coating or the reflecting plate or directly radiated to the heated part without being reflected (Patent Document 4). ).
- the non-stretched plug portion is a whitened portion excluding the bulged portion at the lower end, and the unexpanded bulged portion at the lower end of the plug portion is an unwhitened portion.
- a technique for a telephthalate bottle is disclosed (Patent Document 5).
- the whitened portion of the stopper portion has improved heat resistance and sufficient impact resistance, and furthermore, moderate flexibility can be obtained by the unwhitened portion at the lower end of the stopper portion. It is possible to prevent malfunctions that occur during filling work, etc., even if excessive force is applied.
- Patent Document 1 Japanese Patent Publication No. 3-67499
- Patent Document 2 Japanese Patent Publication No. 3-26646
- Patent Document 3 Japanese Patent Publication No. 5-9261
- Patent Document 4 Japanese Patent Publication No. 6-22876
- Patent Document 5 Japanese Patent Publication No. 4-79901
- the conventional heater unit irradiates the irradiated light almost radially toward the irradiation side
- the conventional heater unit irradiates it off the mouth and neck while the ceramic coating and the reflecting plate reflect the irradiation light.
- the mouth and neck portion of the saturated polyester hollow body has a complicated shape in which the thread thickness and neck ring are provided on the outer periphery of the lower portion of the mouth and neck portion and the wall thickness is not constant. It was obvious. Furthermore, it was necessary to heat uniformly in the circumferential direction.
- a saturated polyester hollow body that solves the above problems is rotated. By condensing the irradiation light on the part to be heated and crystallized, it is heated according to the temperature rise characteristics due to the shape, thickness, physical properties and light absorption rate of the neck and neck, and uniform.
- An object of the present invention is to provide a heating and crystallization apparatus for a saturated polyester hollow body that enables crystallization and a heating method thereof.
- the saturated polyester hollow body heat crystallization apparatus of the present invention is configured so that the saturated polyester hollow body rotates from the heater unit in the mouth and neck of the saturated polyester hollow body.
- the saturated polyester hollow body heat crystallization apparatus for crystallizing the mouth and neck by irradiating and heating the light, wherein the heater unit heats the mouth and neck, and the heating lamp And a light collecting means for collecting the light emitted from the light collecting means, and an irradiation light control means for irradiating the light emitted from the light collecting means to a predetermined position of the mouth-and-neck portion with a predetermined light intensity. is there.
- the present invention is configured such that the heater unit irradiates the light according to a temperature rise characteristic resulting from the shape, thickness, and light absorption rate of the mouth and neck.
- the light condensing means is a reflecting plate having a fixed focal length
- the irradiation light control means is installed in the installation position and / or the installation direction of the heating lamp and the light condensing means.
- the position adjustment means is adjustable.
- the structure of the heater unit can be simplified, and the irradiation light can be easily irradiated to a predetermined position of the mouth and neck with a predetermined light intensity.
- Adjustment of the installation position is usually done by movement in the vertical and Z or horizontal directions.
- the present invention has a configuration in which a plurality of the heater units are arranged side by side along the conveyance path of the saturated polyester hollow body.
- the neck and neck of the saturated polyester hollow body can be continuously heated by passing them in front of a plurality of heater units, which enables continuous crystallization of the saturated polyester hollow body. Efficiency can be improved.
- the present invention has a configuration in which the illumination positions of the plurality of heater units are made different in the horizontal direction and the vertical direction.
- each heater unit can heat a predetermined portion of the mouth and neck, so that the crystallinity of each portion of the mouth and neck can be controlled accurately and easily.
- the method for heating a saturated polyester hollow body according to the present invention is to heat the saturated polyester hollow body with light from a heater unit in a state where the saturated polyester hollow body is rotated.
- the saturated polyester hollow body is heated by crystallizing the mouth-and-neck part by condensing light from the heater unit at a predetermined position on the mouth-and-neck part with a predetermined light intensity.
- a method of heating the neck is to heat the saturated polyester hollow body with light from a heater unit in a state where the saturated polyester hollow body is rotated.
- the saturated polyester hollow body is heated by crystallizing the mouth-and-neck part by condensing light from the heater unit at a predetermined position on the mouth-and-neck part with a predetermined light intensity.
- the present invention is also effective as a heating method, and can efficiently irradiate light to the mouth and neck, so that the energy of the heating lamp can be used effectively and power consumption can be reduced. it can. Furthermore, since light is irradiated while the saturated polyester hollow body is rotated, uniform heating in the circumferential direction can be performed.
- the present invention is a method of irradiating the light according to the temperature rise characteristics resulting from the shape, thickness, and light absorption rate of the mouth and neck.
- the neck and neck can be efficiently and uniformly crystallized even if the shape and the like of the mouth and neck of the saturated polyester hollow body become complicated.
- the crystallinity can be controlled with high accuracy, and desired characteristics can be obtained.
- the present invention is a method in which focusing is performed on a portion near the axial center of the mouth-and-neck portion, and then heating is performed by focusing on a portion in front of the focal point.
- the present invention is a method for heating the neck ring portion of the mouth-neck portion with a focused focal point.
- the heating and crystallizing apparatus for saturated polyester hollow body and the heating method therefor according to the present invention it is possible to efficiently irradiate the neck and neck with light. Can be improved. Furthermore, since light is irradiated while the saturated polyester hollow body is rotated, uniform heating in the circumferential direction can be performed.
- the mouth and neck can be crystallized more uniformly. .
- the crystallinity of each part of the mouth and neck can be controlled accurately and easily.
- Fig. 1 shows a schematic plan view of an apparatus for heating and crystallizing a saturated polyester hollow body, which is an embodiment of the present invention.
- FIG. 2a is a schematic front view for explaining a heater unit of a saturated polyester hollow body heat crystallization apparatus according to an embodiment of the present invention.
- FIG. 2b shows a schematic side view of the heater unit including the partial cross section AA of FIG. 2a.
- FIG. 3a is a schematic side view for explaining the irradiation state of the first heater unit.
- FIG. 3b shows a schematic side view for explaining the irradiation state of the second heater unit.
- FIG. 3c shows a schematic side view for explaining the irradiation state of the third heater unit.
- FIG. 3d shows a schematic side view for explaining the irradiation state of the fourth heater unit.
- FIG. 3e A schematic side view for explaining the irradiation state of the fifth and sixth heater units is shown.
- FIG. 3f shows a schematic side view for explaining the irradiation state of the seventh and eighth heater units.
- FIG. 1 shows a schematic plan view of an apparatus for heating and crystallizing a saturated polyester hollow body, which is an embodiment of the present invention.
- the heat crystallization apparatus 1 includes a conveying means 20 for conveying a preform 10 of a plastic bottle that is a saturated polyester hollow body, and a mouth portion 11 of the preform 10 that is a neck and neck of the saturated polyester hollow body.
- the configuration includes a plurality of heater units 30a and 30f that crystallize the mouth portion 11 by irradiating and heating the irradiation light 9.
- the heat crystallization apparatus 1 is usually used as a heating unit of a preform crystallization apparatus (not shown).
- the heat crystallization apparatus 1 according to the present invention is not limited to the case where it is used for a preform crystallization apparatus.
- the conveying means 20 includes a pair of turrets 21, a chain conveyor 22 hung on the turret 21, and a holder 210 that is rotatably connected to the chain conveyor 22 and into which the preform 10 is inserted. .
- the turret 21 is rotated by a motor (not shown) and continuously conveys a holder 210 connected to the chain conveyor 22. Then, the feeder 23 inserts the preform 10 into the empty holder 210 to be conveyed with the mouth 11 exposed, and passes through the heating regions 25 and 26 facing the discharger 24 force. Take out 10 holder power.
- the conveying means 20 is a known one.
- the holder 210 is provided with a pinion, and racks are installed at predetermined positions in the heating areas 25 and 26.
- the pinion rotates in mesh with the rack, so that the preform 10 is conveyed while rotating around the longitudinal axis, and in the circumferential direction. Heated uniformly.
- the rotation mechanism is not limited to the above mechanism.
- FIG. 2a is a schematic front view for explaining a heater unit of a saturated polyester hollow body heat crystallization apparatus according to an embodiment of the present invention.
- FIG. 2b shows a schematic side view of the heater unit including the partial cross section AA of FIG. 2a. 2a and 2b, the heater unit 30 has a configuration in which a rod-shaped halogen lamp 31 and a reflector 32 are housed as a heating lamp in an elongated rectangular box-shaped housing 33, and is supported by a position adjusting means 40. Yes.
- Each heater unit 30a-30f has a different illumination position, and other configurations are almost the same.
- halogen lamp refers to an infrared bulb in which an inert gas and a trace amount of a halogen substance are added to a sealed gas.
- a halogen lamp 31 that irradiates near infrared rays is used.
- the heating lamp to be used is not limited to the halogen lamp 31.
- a general infrared lamp heated by light irradiation can be used.
- the heating lamp is not limited to a rod shape.
- the reflector 32 is formed in a curved shape having a constant focal length, and reflects the irradiation light 9 emitted from the halogen lamp 31 in two dimensions.
- the shape is focused at any point F (lighting point) of the mouth 11. Therefore, in three dimensions, as shown in FIG. 2a, the irradiation light 9 emitted from the rod-shaped halogen lamp 31 is reflected linearly.
- the heater unit 30 can irradiate most of the light on the mouth 11 except for part of the light emitted from the halogen lamp 31, improving energy efficiency and power consumption. Can be reduced.
- the heater unit 30 does not need to be cooled with water, the structure can be simplified, and the equipment cost can be reduced. Furthermore, by efficiently irradiating the irradiation part 9 with the irradiation light 9, for example, it is not necessary to heat with hot air, so that the structure can be further simplified.
- the casing 33 has a shape of an elongated quadrangular prism, and has a structure that houses the reflector 32 and the halogen lamp 31 from the side surface on the irradiation side.
- the shape of the casing 33 is not limited to this example.
- the housing 33 supports both ends of the halogen lamp 31 and is not shown in the figure. Power cable force of amplifier 31 Pulled out from both end faces.
- the position adjusting means 40 includes a base plate 41 standing upward, a vertical moving plate 42 supported by the base plate 41 so as to be slidable in the vertical direction, and the vertical moving plate 42 in the vertical direction.
- Bolt 45a and lock nut 45b a connecting member 46 that supports the casing 33 that is mounted on the horizontal movement plate 44 so as to be rotatable in the vertical direction, and a bolt that positions the connecting member 46 in the rotating direction. It has power with 47a.
- the heater unit 30 can freely adjust the horizontal and vertical distances and the vertical irradiation angle with respect to the mouth portion 11 of the preform 10.
- the heater units 30a-30f include the position adjusting means 40 having the above-described configuration, and the position adjusting means 40 can easily set the positional relationship between the housing 33 and the mouth portion 11.
- the irradiation light 9 can be irradiated to a predetermined position of the mouth portion 11 with a predetermined light intensity.
- the heater units 30a-30f have a simplified structure, the manufacturing cost can be reduced.
- the position adjusting means 40 is not limited to the above-described configuration.
- the position adjusting means 40 is a mechanism capable of heating the mouth portion 11 by condensing it at a predetermined position of the mouth portion 11 with a predetermined light intensity. Just do it.
- the light intensity is adjusted only by the positional relationship of the heater unit. For example, the voltage of the halogen lamp 31 may be controlled.
- the heating and crystallization apparatus 1 includes a total of eight heater units 30 a to 30 f arranged in parallel in heating regions 25 and 26 along the conveyance path of the preform 10.
- the mouth portion 11 of the preform 10 can be continuously heated by passing in front of the plurality of heater units 30a-30f, and the mouth portion 11 can be continuously crystallized.
- the production efficiency can be improved.
- the number of heater units is eight, but the present invention is not limited to this. Further, although no heater unit is provided on the outer peripheral portion of the right turret 21, it is possible to use this area as a heating area, thereby saving space. [0033]
- the heat crystallization apparatus 1 has a configuration in which the positions illuminated by the heater units 30a and 30f are different. In this way, each heater unit 30a 30f can heat a predetermined part of the mouth part 11, so that the degree of crystallinity of each part of the mouth part 11 can be controlled accurately and easily.
- each heater unit 30a 30f emits the irradiation light 9 of the mouth portion 11 according to the temperature rise characteristics resulting from the shape, thickness, and light absorption rate of the mouth portion 11 of the preform 10.
- irradiating at a predetermined position with a predetermined light intensity it is possible to heat the mouth 11 where unevenness in crystallization occurs only by irradiating light with a substantially uniform light intensity based on the temperature rise characteristics. Since the point to be heated can be intensively heated, more uniform crystallization can be realized.
- the crystallinity can be controlled with high accuracy, and desired characteristics can be obtained.
- the "temperature rise characteristic” refers to the rate of temperature rise of each part of the mouth and neck when the mouth and neck are heated by irradiation with light.
- a plastic bottle preform 10 has a thread 13 formed at the upper part of the mouth part 11, a stepped part 14 formed at the middle step part, and a neck ring 12 formed at the lower part. For this reason, the temperature rise characteristic of the thick part becomes small, and the temperature does not easily rise.
- the preform 10 before crystallization is colorless and transparent, but when it is crystallized, it changes to white and the light absorption rate changes.
- the whitened part from the colorless and transparent state has a large temperature rise characteristic and the temperature rises rapidly, while the part where the irradiated light 9 is blocked by the whitened part has a rapidly small temperature rise characteristic due to the irradiated light 9. Become.
- the irradiation condition-operation of the heat crystallization apparatus according to the present invention is not limited to this.
- FIG. 3a shows a schematic side view for explaining the irradiation state of the first heater unit 30a.
- the first heater unit 30a has the irradiation light 9 collected at the upper center of the mouth 11. It is adjusted to light. That is, the heater unit 30a is set at a position above the mouth portion 11 and close to the mouth portion 11 in a state of facing the horizontal direction.
- the heating and crystallization apparatus 1 heats the mouth 11 as a whole with the irradiation light 9 emitted from the heater unit 30a, and particularly heats the thread 13 above the mouth 11.
- FIG. 3b shows a schematic side view for explaining the irradiation state of the second heater unit 30b.
- the second heater unit 30 b is adjusted so that the irradiation light 9 is collected on the upper outer periphery of the mouth portion 11. That is, the heater unit 30b is set at a position away from the mouth portion 11 in the horizontal direction as compared with the heater unit 30a.
- the heating and crystallization apparatus 1 focuses and heats the thread 13 of the mouth 11 with the irradiation light 9 irradiated from the heater unit 30b to cause crystallization.
- FIG. 3c shows a schematic side view for explaining the irradiation state of the third heater unit 30c.
- the third heater unit 30c is adjusted so that the irradiation light 9 is condensed at the center of the middle part of the mouth part 11. That is, the heater unit 30c is set at a position that is closer to the horizontal direction from the mouth portion 11 and moved downward than the heater unit 30b.
- the heating and crystallization apparatus 1 heats the mouth part 11 as a whole by the irradiation light 9 emitted from the heater unit 30c, and particularly heats the stepped part 14 in the middle part of the mouth part 11.
- FIG. 3d shows a schematic side view for explaining the irradiation state of the fourth heater unit 30d.
- the fourth heater unit 30 d is adjusted so that the irradiation light 9 is condensed on the outer periphery of the middle part of the mouth 11.
- the heater unit 30d is set at a position away from the mouth portion 11 in the horizontal direction as compared with the heater unit 30c.
- the heating and crystallization apparatus 1 preferentially heats the stepped portion 14 of the mouth portion 11 with the irradiation light 9 emitted from the heater unit 30d to cause crystallization.
- FIG. 3e shows a schematic side view for explaining the irradiation state of the fifth and sixth heater units 30e.
- the fifth and sixth heater units 30e are adjusted so that the irradiation light 9 also collects an obliquely upward force on the outer periphery of the lower part of the mouth part 11. That is, the heater unit 30e is set at a position that is separated from the mouth portion 11 in the horizontal direction, moved upward, and rotated downward as compared with the heater unit 30d.
- the heat crystallization apparatus 1 heats and crystallizes the lower neck ring 12 of the mouth part 11 with the irradiation light 9 emitted from the heater unit 30e.
- Two heater units 30e are arranged side by side.
- FIG. 3f shows a schematic side view for explaining the irradiation state of the seventh and eighth heater units 30f.
- the seventh and eighth heater units 30f are adjusted so that the irradiation light 9 also collects an oblique upward force at the center of the lower part of the mouth part 11. That is, the heater unit 30f is set at a position closer to the horizontal direction from the mouth portion 11 than the heater unit 30e.
- the heat crystallization apparatus 1 heats the entire upper surface and outer peripheral surface of the mouth 11 with the irradiation light 9 emitted from the heater unit 30f, and promotes crystallization.
- Two heater units 30 f are arranged side by side.
- the saturated polyester hollow body heat crystallization apparatus 1 of the present embodiment can collect the light emitted from the halogen lamp 31, and thus can efficiently be applied to the mouth portion 11 to be heated. Irradiation light 9 can be irradiated, and energy efficiency can be improved. Further, since irradiation light having a predetermined light intensity is irradiated to a predetermined position of the mouth portion 11 according to the temperature rise characteristic of the mouth portion 11, for example, for a mouth portion 11 having a different thickness and a complicated shape. However, more uniform crystallization can be realized.
- the mouth portion 11 can be irradiated with the irradiation light 9 while rotating the preform 10, uniform heating can be performed in the circumferential direction.
- the mouth portion 11 of the preform 10 was heated to crystallize the mouth portion 11 using the heat crystallization apparatus 1 (the number of heater units was 20).
- the heat crystallization apparatus 1 is The illumination position was optimally set so as to change both in the horizontal and vertical directions, and almost the entire mouth 11 was crystallized so that the average crystallinity was about 35 volume percent.
- the preform initial temperature was about 35 ° C and the heating time was about 2 minutes.
- the total power consumption of the heater unit 30 was 40 KW.
- the total power consumption of the heater unit was 120 KW.
- the heat crystallization apparatus 1 was able to save about 67% of the power consumption of the heater unit 30.
- the mouth portion 11 of the preform 10 was heated and the mouth portion 11 was crystallized by using the heating and crystallization apparatus 1 that was optimally set so that the illuminating position changed in the horizontal direction. .
- the other conditions were almost the same as in the first example.
- the total power consumption of the heater unit 30 was 45 KW. In other words, the heat crystallization apparatus 1 was able to save about 63% of the power consumption of the heater unit 30.
- the heating and crystallization apparatus 1 of the present embodiment is optimally set so that the illumination position changes in the horizontal direction, but is not limited to this configuration.
- the illumination position changes in the vertical direction.
- the mouth 11 is crystallized by irradiating and heating the irradiation light 9 from the heater unit 30 to the mouth 11 of the preform 10 while rotating the preform 10.
- This is a heating method for a saturated polyester hollow body, in which the light from the heater unit 30 is condensed at a predetermined position of the mouth portion 11 with a predetermined light intensity to heat the mouth portion 11.
- the focal length is adjusted so that the irradiation area of the irradiation light 9 is reduced, the light intensity is increased. Conversely, if the focal length is adjusted so that the irradiation area is increased, the light intensity is reduced. In this way, the light intensity at a predetermined position of the mouth portion 11 can be easily adjusted, and the heating energy can be accurately controlled.
- the mouth portion 11 having a complicated shape, a different thickness, or a different light absorptivity has different temperature rise characteristics in each portion. For example, when heated by light of uniform light intensity, such as sunlight, the thicker part becomes more difficult to heat up as the part close to the heat source heats up or immediately leaves the heat source.
- the portion where the crystallization is insufficient has a low mechanical strength, and the portion where the crystallization has progressed too much becomes brittle and deforms. It is required to crystallize.
- the light intensity of the light irradiated to each part is controlled. In this way, for example, even for the mouth part 11 having a complicated shape. Because the temperature profile of each part can be matched, it can be uniformly crystallized.For example, when the front part is whitened against the heat source, the rear part where light is blocked rises in temperature due to heat conduction. As a result, the temperature rise characteristic is reduced. In such a case, first, the focal length of the light collection should be adjusted to the rear part and heated gradually from the rear to the front so that the light is not blocked.
- the light is preferentially condensed on a portion of the mouth portion 11 where the light is difficult to reach, whereby the mouth portion 11 is whitened or discolored by heating and the light absorption rate is changed.
- the heating can be efficiently performed according to the change in the light absorption rate or using the change.
- the reflector 32 having a fixed focal length is used as the light collecting means, and the installation position and / or orientation of the halogen lamp 31 and the reflector 32 is adjusted. If it does in this way, the irradiation light 9 can be easily irradiated to the predetermined position of the mouth part 11 with predetermined light intensity.
- the heating and crystallization apparatus 1 of the above embodiment is not limited to the force set by the heater units 30a and 30f according to the shape of the mouth portion 11 of the preform 10, and is not limited to the above settings.
- the heater units 30c and 30d can be replaced or the number of heater units can be increased or decreased.
- the heating and crystallization apparatus for a saturated polyester hollow body of the present invention and the heating method thereof are not limited to the mouth 11 of the preform 10 of the PET bottle.
- the mouth and neck of containers other than PET bottles It can be suitably used for the part.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006527734A JP4577311B2 (ja) | 2004-07-28 | 2004-07-28 | 飽和ポリエステル中空体の加熱結晶化装置及びその加熱方法 |
CN2004800435296A CN1984766B (zh) | 2004-07-28 | 2004-07-28 | 饱和聚酯空心体的加热晶化装置及其加热方法 |
PCT/JP2004/010709 WO2006011201A1 (ja) | 2004-07-28 | 2004-07-28 | 飽和ポリエステル中空体の加熱結晶化装置及びその加熱方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2004/010709 WO2006011201A1 (ja) | 2004-07-28 | 2004-07-28 | 飽和ポリエステル中空体の加熱結晶化装置及びその加熱方法 |
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WO2006011201A1 true WO2006011201A1 (ja) | 2006-02-02 |
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PCT/JP2004/010709 WO2006011201A1 (ja) | 2004-07-28 | 2004-07-28 | 飽和ポリエステル中空体の加熱結晶化装置及びその加熱方法 |
Country Status (3)
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JP (1) | JP4577311B2 (ja) |
CN (1) | CN1984766B (ja) |
WO (1) | WO2006011201A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017074704A (ja) * | 2015-10-14 | 2017-04-20 | 大日本印刷株式会社 | プリフォーム、プリフォームの製造方法、プリフォームの結晶化装置、プラスチックボトル、及び充填体の製造方法 |
WO2018235850A1 (ja) * | 2017-06-23 | 2018-12-27 | 大日本印刷株式会社 | プリフォームの加熱装置及びプリフォームの加熱方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008060572A1 (de) * | 2008-12-04 | 2010-06-10 | Krones Ag | Vorrichtung zum Erwärmen von Kunststoffbehältnissen und Resonator hierfür |
CH702464A1 (de) * | 2009-12-23 | 2011-06-30 | Alpla Werke | Preform zur Herstellung von Kunststoffbehältern in einem zweistufigen Streckblasprozess. |
KR101694797B1 (ko) | 2010-12-21 | 2017-01-11 | 삼성전자주식회사 | 3차원 이미지 센서의 구동 방법 |
Citations (3)
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JPS60125650A (ja) * | 1983-12-13 | 1985-07-04 | Hokkai Can Co Ltd | ポリエチレンテレフタレ−ト樹脂製容器の口部白化処理方法及び装置 |
JPS63307928A (ja) * | 1987-06-10 | 1988-12-15 | Ueno Hiroshi | 高分子樹脂成型品の加熱方法 |
JPH11235751A (ja) * | 1998-02-20 | 1999-08-31 | Ueno Hiroshi | プラスチック成形体の結晶化方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS60927A (ja) * | 1983-06-17 | 1985-01-07 | Mitsubishi Plastics Ind Ltd | ボトル口栓部の結晶化方法 |
JPH0622876B2 (ja) * | 1988-07-25 | 1994-03-30 | 東洋製罐株式会社 | プリフォーム結晶化装置におけるホルダー、打込みコアー及び冷却装置 |
-
2004
- 2004-07-28 JP JP2006527734A patent/JP4577311B2/ja not_active Expired - Lifetime
- 2004-07-28 WO PCT/JP2004/010709 patent/WO2006011201A1/ja active Application Filing
- 2004-07-28 CN CN2004800435296A patent/CN1984766B/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60125650A (ja) * | 1983-12-13 | 1985-07-04 | Hokkai Can Co Ltd | ポリエチレンテレフタレ−ト樹脂製容器の口部白化処理方法及び装置 |
JPS63307928A (ja) * | 1987-06-10 | 1988-12-15 | Ueno Hiroshi | 高分子樹脂成型品の加熱方法 |
JPH11235751A (ja) * | 1998-02-20 | 1999-08-31 | Ueno Hiroshi | プラスチック成形体の結晶化方法 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017074704A (ja) * | 2015-10-14 | 2017-04-20 | 大日本印刷株式会社 | プリフォーム、プリフォームの製造方法、プリフォームの結晶化装置、プラスチックボトル、及び充填体の製造方法 |
WO2018235850A1 (ja) * | 2017-06-23 | 2018-12-27 | 大日本印刷株式会社 | プリフォームの加熱装置及びプリフォームの加熱方法 |
JP2019005982A (ja) * | 2017-06-23 | 2019-01-17 | 大日本印刷株式会社 | プリフォームの加熱装置及びプリフォームの加熱方法 |
EP3643474A4 (en) * | 2017-06-23 | 2021-03-03 | Dai Nippon Printing Co., Ltd. | PREFORM HEATING DEVICE AND PREFORM HEATING METHOD |
US11173647B2 (en) | 2017-06-23 | 2021-11-16 | Dai Nippon Printing Co., Ltd. | Heating apparatus for preforms and heating method for preforms |
Also Published As
Publication number | Publication date |
---|---|
JP4577311B2 (ja) | 2010-11-10 |
JPWO2006011201A1 (ja) | 2008-05-01 |
CN1984766A (zh) | 2007-06-20 |
CN1984766B (zh) | 2012-01-25 |
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