JP5810666B2 - Laminate manufacturing equipment - Google Patents

Description

  The present invention provides a laminate manufacturing method in which a substrate mainly composed of a plastic film and a resin film formed by extruding a thermoplastic resin into a film shape from a T-die are laminated, and at the same time, a concavo-convex pattern is formed on the surface of the laminated laminate. Relates to the device.

  Conventionally, a thermoplastic resin film melt-extruded from a T-die through an extruder is overlapped with a substrate such as a plastic film, metal foil, synthetic paper, paper, etc. and passed between a chill roll (cooling roll) and a nip roll. It is laminated | stacked by pressing sometimes, and it cools with the chill roll, and the laminated body is manufactured.

  In this case, depending on the performance required for the laminated laminate, various uneven patterns are formed by shaping the uneven pattern formed on the surface of the chill roll on the surface of the laminate, In general, chill rolls are prepared with multiple types of concavo-convex patterns formed on the surface in order to satisfy the performance required for the laminate, such as slipperiness, blocking properties, transparency, and design properties. In addition, a chill roll having an optimal concavo-convex pattern is selected and used from a plurality of chill rolls in consideration of the type of base material, the type of thermoplastic resin to be extruded, and the like. In addition, a chill roll having a special design, logo, or concavo-convex pattern such as a hologram may be used in order to enhance design and brand.

  In order to increase the cooling efficiency of the extruded thermoplastic resin film, a chill roll is usually used having a diameter of about 600 mmφ. Since it is a heavy object, it takes time and labor to handle it.

FIG. 3 is a schematic view showing a conventional laminate manufacturing apparatus. The resin film 102 formed by dripping the thermoplastic resin melted from the T die 114 through an extruder (not shown) and the base material 101 are overlapped with each other and passed between the nip roll 111 and the chill roll 113, and the chill roll By pressing the backup roll 110 and the nip roll 111 to 113, the uneven pattern formed on the outer peripheral surface of the chill roll 113 is laminated on the resin film 102 at the same time, and cooled while being wound around the surface of the chill roll 113, It becomes the laminated body 103 in which the uneven | corrugated pattern was formed, moves from the chill roll 113, and is wound up by the winding device (not shown) through a some guide roll.
When changing the concavo-convex pattern of the laminate, it is necessary to replace the chill roll having a desired concavo-convex pattern each time. When replacing the chill roll 113, first remove the timing belt etc. that is transmitting the drive to the old chill roll 113, remove the bolts, remove the bearing cover, lift and remove the old chill roll with a crane etc., and replace it with a chill roll having the desired uneven pattern. Again, attach in the reverse order of the above. These chill roll replacement operations are time-consuming and have problems of excessive replacement time and labor load.

  On the other hand, as a solution to such a problem, an extrusion laminator cooling roll support device for an extrusion laminator in which a cooling roll (chill roll) bearing to be cooled is configured only by a lower support is known. (For example, refer to Patent Document 1).

  The chill roll replacement time was shortened by the support device of Patent Document 1. However, it is necessary to prepare a plurality of chill rolls, and there is a problem that the chill rolls are expensive and equipment costs increase. Further, since chill rolls are heavy, handling is troublesome and there is a limit to shortening the replacement time, and it is actually not sufficient.

  In addition, a metal plate with fine irregularities made up of line-shaped pattern groups is mounted on a cooling roll (chill roll), and a molten synthetic resin extruded from a T-shaped die is extruded onto a cooling roll mounted with a metal plate. A method for producing a sheet having a concavo-convex pattern for forming a fine concavo-convex pattern consisting of a line-shaped pattern group on a resin surface at the same time as cooling to form a film is disclosed (for example, see Patent Document 2).

  However, the technique disclosed in Patent Document 2 requires a skill to mount the metal plate without distortion, and there is a problem that it takes time and effort to mount the metal plate unless it is an expert, and a problem that a fitted joint is generated. There is a demand for development of a laminate manufacturing apparatus that requires a short chill roll replacement time and a low equipment cost.

Japanese Utility Model Publication No. 5-7436 JP 2007-118274 A

  Therefore, in view of the above problems, the present inventor has added a small-diameter chill roll in which a concavo-convex pattern is formed between the current chill roll and nip roll as a result of diligence and research, and makes the small-diameter chill roll detachable. It was found that the chill roll replacement work can be reduced by exchanging the chill roll, and the present invention has been achieved. That is, the objective of this invention is providing the laminated body manufacturing apparatus which can reduce the installation cost of the roll which forms a concavo-convex pattern, can replace | exchange the roll which forms a concavo-convex pattern easily, and can be replaced in a short time.

In order to achieve the above object, the present invention provides a resin film formed by dripping a thermoplastic resin melted from a T-die through an extruder between a nip roll and a chill roll. a device was producing a laminate to pass through a substrate, a first chill roll made of metal at least chill roll is provided with a hollow portion, comprising a second chill roll, the first chill roll is positioned in the nip roll side An apparatus for manufacturing a laminate, in which a concavo-convex pattern is directly formed over the entire outer peripheral surface, and the diameter of the first chill roll is smaller than the diameter of the second chill roll, and is detachably provided. .

  Moreover, the present invention according to claim 2 is the laminate manufacturing apparatus according to claim 1, wherein the diameter of the second chill roll is 400 to 800 mmφ, and the diameter of the first chill roll is 120 to 250 mmφ. It is what.

The laminate production apparatus of the present invention produces a laminate by passing a resin film formed by dripping a thermoplastic resin melted from a T die through an extruder between a nip roll and a chill roll and a substrate. The apparatus includes a first chill roll made of a metal having at least a hollow part, and a second chill roll, and the first chill roll is located on the nip roll side and has a concavo-convex pattern directly over the entire outer circumference thereof. By forming the first chill roll so that the diameter of the first chill roll is smaller than the diameter of the second chill roll and is detachable, only the first chill roll is replaced when changing the uneven pattern. The first chill roll has a smaller diameter than the second chill roll and is easy to handle, and the replacement time is shortened. Moreover, compared with the second chill roll, the first chill roll has a small diameter and is inexpensive, so that the equipment cost can be reduced. Furthermore, since the replacement frequency of the second chill roll is reduced, the labor load is reduced. Further, the thermoplastic resin melted from the T-die is suspended between the nip roll and the first chill roll to form a resin film, and the base material and the resin film are passed between the nip roll and the first chill roll and pressed. By cooling with a two chill roll, it is possible to form a concavo-convex pattern on the surface of the resin film or both surfaces of the base material and the resin film and simultaneously laminate them.

  In the present invention according to claim 2, since the diameter of the second chill roll is 400 to 800 mmφ, and the diameter of the first chill roll is 120 to 250 mmφ, the weight of the first chill roll can be reduced and the handling is further performed. It becomes easy.

It is the schematic which shows the laminated body manufacturing apparatus which concerns on this invention. It is the schematic which mounted the laminated body manufacturing apparatus which concerns on this invention in the lamination part of the extrusion laminator. It is the schematic which shows the conventional laminated body manufacturing apparatus.

The above-described present invention will be described in detail below with reference to the drawings.
FIG. 1 is a schematic diagram showing a laminate manufacturing apparatus according to the present invention, FIG. 2 is a schematic diagram in which the laminate manufacturing apparatus according to the present invention is mounted on a laminate portion of an extrusion laminator, and FIG. 3 shows a conventional laminate manufacturing apparatus. 1 and 101 are base materials, 2 and 102 are resin films, 3 and 103 are laminates having an uneven pattern, 4 is winding, 10 and 110 are backup rolls, and 11 and 111 are Nip roll, 12 is a first chill roll, 12a is an uneven pattern, 13 is a second chill roll, 14, 114 is a T die, 20 is a first paper feeder, 21 is an AC coating device, 22 is a drying device, 23 is a laminating unit, Reference numeral 24 denotes a winding device, and 113 denotes a chill roll.

  FIG. 1 is a schematic view showing an embodiment of a laminate manufacturing apparatus according to the present invention, and the laminate manufacturing apparatus is placed on a laminate portion of an extrusion laminator. As shown in FIG. 1, the laminate manufacturing apparatus includes a backup roll 10, a nip roll 11, a first chill roll 12, and a second chill roll 13 arranged in this order in the direction in which the substrate 1 passes, and passes through an extruder (not shown). This is an apparatus for manufacturing a laminate 3 having a concavo-convex pattern by passing a resin film 2 formed by dripping a molten thermoplastic resin from a die 14 and a substrate 1 between a nip roll 11 and a first chill roll 12. .

The first chill roll 12 and the second chill roll 13 are provided close to each other, and both the chill rolls 12 and 13 are provided with driving means. The backup roll 10 and the nip roll 11 are provided with a crimping means such as an air cylinder so that they can be crimped to the first chill roll 12. When the laminate is manufactured by passing the resin film 2 and the substrate 1 between the nip roll 11 and the first chill roll 12, the nip roll 11 and the backup roll 10 are pressure-bonded to the first chill roll 12 by a pressure-bonding means. . Although the backup roll 10 is not essential, it is preferable to provide the backup roll 10 because the nip roll 11 can be uniformly crimped to the first chill roll 12.
Further, the backup roll 10, the nip roll 11, the first chill roll 12, and the second chill roll 13 have hollow portions (not shown) that communicate with both ends in the axial direction of the roll, and the hollow portions are formed from one end of the roll shaft. A cooling fluid such as water, which flows to the other end through this is continuously supplied to cool the resin to an appropriate temperature.

  An uneven pattern 12 a is formed on the outer peripheral surface of the first chill roll 12, and the diameter of the first chill roll 12 is smaller than the diameter of the second chill roll 13 and is detachably provided. And as shown in FIG. 1, the base material 1 and the resin film 2 are passed between the nip roll 11 and the first chill roll 12, and the backup roll 10 is pressure-bonded to the first chill roll 12 via the nip roll 11, The concavo-convex pattern 12a formed on the outer peripheral surface of the first chill roll 12 is laminated at the same time as being molded on the surface of the resin film 2 or both surfaces of the resin film 2 and the base material 1, and then the laminate 3 having the concavo-convex pattern. Is cooled to an appropriate temperature while being wound around the surface of the second chill roll 13. In addition, the arrow shown in a figure shows the rotation direction of a base material and a laminated body, and the rotation direction of a 1st chill roll and a 2nd chill roll.

  The concavo-convex pattern 12a provided on the surface of the first chill roll 12 is not particularly limited, and, for example, a stone pattern, a texture pattern, a grain pattern pattern or the like is applied to improve the slipping property or blocking property of the laminate, or It is possible to enhance the designability by applying a concavo-convex pattern such as a design or a hologram, or to improve the brandiness by applying a character symbol, a line, an abstract pattern, or the like.

  As a method for producing the concavo-convex pattern 12a, the outer peripheral surface of the first chill roll 12 made of stainless steel, steel or the like having a hollow portion is subjected to plating treatment such as chrome plating, copper plating, nickel plating, etc. Examples include a method of performing removal processing using a diamond tool or a metal grindstone on the surface, laser processing, or a method of performing chemical etching after performing plating treatment such as copper plating or nickel plating. The method is not particularly limited. Of course, after applying the uneven pattern, the surface can be further subjected to chromium plating or the like to provide durability.

  Thus, by forming a concavo-convex pattern on the first chill roll 12, when switching to an operation that requires a new concavo-convex pattern, there is no need to replace the second chill roll 13 as in the prior art. Only the chill roll 12 needs to be replaced. Furthermore, since the diameter of the first chill roll 12 is smaller and smaller than the diameter of the second chill roll 13, the first chill roll 12 can be reduced in weight, handled easily, and the replacement time is shortened. Furthermore, compared with the 2nd chill roll 13, the 1st chill roll 12 is a small diameter, and can reduce installation cost. Further, the diameter of the second chill roll 13 is 400 to 800 mmφ, and the diameter of the first chill roll 12 is preferably 120 to 250 mmφ, and if the diameter of the first chill roll exceeds 250 mmφ, the weight increases and handling is troublesome. The replacement time becomes longer and the cost becomes higher. If the diameter of the first chill roll 12 is less than 120 mmφ, sufficient cooling performance cannot be obtained.

  The nip roll 11 is formed by coating a synthetic rubber such as ethylene propylene rubber on the outer peripheral surface of an iron core such as stainless steel or steel having a hollow portion, and further, a silicon rubber having heat resistance and releasability on the outer peripheral surface of the synthetic rubber. Is used and the hardness is appropriately adjusted. The diameter of the nip roll 11 is usually 150 to 250 mmφ.

  FIG. 2 is a schematic view in which the laminate manufacturing apparatus according to the present invention is mounted on a laminate portion of an extrusion laminator. As shown in FIG. 2, the extrusion laminator is provided with a first sheet feeding device 20 that unwinds and rewinds the winding 4 in which the substrate 1 is wound in a coil shape, and the substrate 1 fed from the first sheet feeding device 20. AC coating device 21 for applying a dilute solution of anchor agent (AC agent) to the substrate, a drying device 22 for drying the diluent of the AC agent, a base material fed from the first paper feeding device and a thermoplastic resin from the T die A plurality of guide rolls and other accessory devices configured to include a laminating portion 23 for laminating the extruded resin film and a winding device 24 for winding the laminated body 3 having a concavo-convex pattern into a coil shape, and supporting the web between the devices. Is installed.

The laminate part 23 is equipped with the laminate manufacturing apparatus according to the present invention. In FIG. 2, the backup roll 10, the nip roll 11, and the like are arranged from the first sheet feeding device 20 side to the winding device 24 side. The first chill roll 12 and the second chill roll 13 are arranged in this order, and the nip roll 11 and the first chill roll 12 are formed by the resin film 2 and the substrate 1 formed by dripping the thermoplastic resin melted from the T die 14 through an extruder. The concavo-convex pattern 12a formed on the outer peripheral surface of the first chill roll 12 is formed on the surface of the resin film 2 or the resin film 2 by pressing the backup roll 10 onto the first chill roll 12 via the nip roll 11. And laminated on the both surfaces of the base material 1 at the same time, and then the laminated body 3 having the concavo-convex pattern is appropriate while being wound around the surface of the second chill roll 13. It cooled to a temperature, wound up on the take-up device 24 through a plurality of guide rolls and serves as a winding.
2 illustrates a single laminator having one laminating section 23 having a T-die. It may be a tandem laminator provided with two laminate parts. In the case of a tandem laminator, the laminate part 23 or No. 2 The laminate manufacturing apparatus of the present invention can be mounted on the laminate part. Although not shown, a second paper feeding device is provided, and the other base material is supplied from the second paper feeding device between the nip roll 11 and the first chill roll 12 from above the second chill roll 13 side. It is also possible to sandwich the base material 1 supplied from the paper feeding device 20 with the resin film 2.

  As a base material used in the present invention, polypropylene, polyethylene terephthalate, nylon, polyacrylonitrile, polyvinylidene chloride, polyvinyl alcohol, ethylene / vinyl alcohol copolymer, polyethylene film, cellophane, and polyvinylidene chloride on the above film, A gas barrier resin composition such as polyvinyl alcohol is applied to provide a gas barrier layer, or an inorganic material such as aluminum, aluminum oxide, silicon oxide, indium oxide, tin oxide, or zirconium oxide is deposited to provide a vapor deposition layer. Things can be used. Moreover, as these films, an unstretched film, a film stretched in a uniaxial direction or a biaxial direction can be used, and a single film of the above films or a combination of these films can be used. In the case of an unstretched film, it is preferably supplied from the second paper feeder and sandwiched with the above-mentioned base materials.

  Examples of the thermoplastic resin used in the present invention include low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-α olefin copolymer, and ethylene-propylene copolymer. , Ethylene-vinyl acetate copolymer, ionomer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-acrylic acid ester copolymer, ethylene-methacrylic acid ester copolymer, amorphous Examples thereof include polyester resins.

DESCRIPTION OF SYMBOLS 1,101 Base material 2,102 Resin film 3,103 Laminated body which has an uneven | corrugated pattern 4 Winding 10,110 Backup roll 11,111 Nip roll 12 First chill roll 12a Irregular pattern 13 Second chill roll 14,114 T die 20 1st Paper feeding device 21 AC coating device 22 Drying device 23 Laminating unit 24 Winding device 113 Chill roll

Claims (2)

An apparatus for producing a laminate by passing a resin film formed by dripping a thermoplastic resin melted from a T die through an extruder and a substrate between a nip roll and a chill roll,
At least a chill roll is provided with a first chill roll made of a metal having a hollow portion, and a second chill roll, the first chill roll is located on the nip roll side, and a concavo-convex pattern is directly formed over the entire outer periphery thereof, and The diameter of the said 1st chill roll is smaller than the diameter of said 2nd chill roll, and it is provided so that attachment or detachment is possible, The laminated body manufacturing apparatus characterized by the above-mentioned. The diameter of the said 2nd chill roll is 400-800 mmphi, and the diameter of the said 1st chill roll is 120-250 mmphi, The laminated body manufacturing apparatus of Claim 1 characterized by the above-mentioned.

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