WO2019082683A1 - ラミネート装置及びラミネート方法 - Google Patents
ラミネート装置及びラミネート方法Info
- Publication number
- WO2019082683A1 WO2019082683A1 PCT/JP2018/038022 JP2018038022W WO2019082683A1 WO 2019082683 A1 WO2019082683 A1 WO 2019082683A1 JP 2018038022 W JP2018038022 W JP 2018038022W WO 2019082683 A1 WO2019082683 A1 WO 2019082683A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coating
- web
- roll
- coating liquid
- gravure
- Prior art date
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Classifications
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- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0808—Details thereof, e.g. surface characteristics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
- B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/04—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving separate application of adhesive ingredients to the different surfaces to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B2037/1253—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives curable adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B2037/1269—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives multi-component adhesive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/14—Velocity, e.g. feed speeds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
Definitions
- the present invention relates to a laminating apparatus and a laminating method.
- a laminating apparatus has been developed in which an adhesive is applied to the web and a plurality of webs are laminated to produce a composite film.
- a two-component curable adhesive is applied to one of the webs using a roll coater, and the two webs are bonded to each other to produce a composite film.
- the main agent of the two-component curing adhesive and the curing agent are mixed in advance and stored in the liquid reservoir. Then, the adhesive mixture stored is applied to the web by a roll coater.
- the adhesive mixture stored in the liquid reservoir in order to prolong the pot life of the adhesive mixture stored in the liquid reservoir, it is necessary to delay the curing of the adhesive mixture.
- the curing of the adhesive mixture is slow, it takes time for the curing of the adhesive to proceed sufficiently after the webs are bonded to each other. Therefore, there is a possibility that deviation may occur in the web after bonding.
- the present invention has been made in view of the above-mentioned circumstances, and it is possible to use an adhesive that cures rapidly, to improve the quality of the composite film, and to apply a coating solution having a low viscosity. It aims at providing an apparatus and a laminating method.
- a laminating apparatus is A first coating unit for applying one of a main component of a two-component curing adhesive and a curing agent to a first web as a coating solution; A second coating unit that applies the other of the main component of the two-component curing adhesive and the curing agent not applied to the first web as a coating liquid to the second web; And a bonding section for bonding the coating liquid coated surface of the first web and the coating liquid coated surface of the second web,
- the second coating unit is It is a gravure coating machine.
- the coating weight ratio of the coating liquid applied in the first coating part to the coating liquid applied in the second coating part is in the range of 1: 1 to 10: 1. You may do it.
- the second coating unit is A coating fluid tank for storing the coating fluid, A temperature controller for controlling the temperature of the coating liquid stored in the coating liquid tank, You may do it.
- the first coating unit is A roll coater, You may do it.
- the second coating unit is The application amount in the central portion in the application width direction of the coating liquid is applied larger than the application amount in the application width direction both ends, You may do it.
- the gravure coating machine of the said 2nd coating part is A gravure roll for transferring the coating liquid can be rotated in the same direction as the transport direction of the second web, You may do it.
- the laminating method according to the second aspect of the present invention is A first applying step of applying one of a main component of a two-component curing adhesive and a curing agent to a first web as a coating solution; A second application step of applying the other of the main component of the two-component curing adhesive and the curing agent not applied to the first web as a coating liquid to the second web by gravure printing; A bonding step of bonding together the coating liquid coated surface of the first web and the coating liquid coated surface of the second web; including.
- the coating weight ratio of the coating liquid applied in the first application step to the coating liquid applied in the second application step is in the range of 1: 1 to 10: 1. You may do it.
- the viscosity of the coating liquid applied in the second application step is 10 mPa ⁇ s or more and 500 mPa ⁇ s or less, You may do it.
- the gravure roll is rotated in the same direction as the transport direction of the second web to apply the coating liquid to the second web. You may do it.
- the laminating apparatus and the laminating method of the present invention since the main agent and the curing agent are applied to separate webs and curing of the adhesive is started at the time of bonding, it becomes possible to use an adhesive that cures quickly. It is possible to improve the quality of the composite film by suppressing the deviation of the web after alignment. Moreover, drip coating can be prevented and coating quality can be improved by applying the coating liquid of either one of the main agent and the curing agent by gravure printing.
- the laminating apparatus 1 is an apparatus for laminating the first web W1 and the second web W2 using a two-component curing non-solvent adhesive as a two-component curing adhesive.
- the two-component curable solventless adhesive according to the present embodiment is composed of a main agent M and a curing agent H, and the viscosity of the main agent M is higher than the viscosity of the curing agent H.
- the laminating apparatus 1 is provided with the 1st unwinding part 11, the 1st coating part 12, the 2nd unwinding part 13, the 2nd coating part 14, and the laminator 15, as shown in FIG.
- the first unwinding unit 11 delivers the first web W 1 to the first coating unit 12.
- the first web W 1 is rotatably attached to the web attachment portion 111 of the first unwinding portion 11.
- the first coating unit 12 applies, as a coating liquid, the main agent M of the two-component curable non-solvent adhesive to the first web W1 delivered from the first unwinding unit 11.
- the first coating unit 12 according to the present embodiment is a roll coater of four squeeze roll method, and the application roll 121, doctor roll 122, metering ring 123, coating roll 124, backing A roll 125 is provided.
- a liquid reservoir 120 is provided in a portion where the application roll 121 and the doctor roll 122 face each other.
- the application roll 121 is a roll provided with an outer peripheral surface of an elastic material such as rubber.
- the doctor roll 122 is a roll provided with an outer peripheral surface of metal (inelastic material).
- the application roll 121 and the doctor roll 122 are rotatably supported by the first coating unit 12 so that the rotation axes are parallel to each other.
- the outer peripheral surface of the application roll 121 and the outer peripheral surface of the doctor roll 122 are opposed with a minute interval.
- a pair of weir plates 126 is installed at predetermined intervals in the rotational axis direction of the application roll 121 and the doctor roll 122 at the upper part of the facing portion.
- a liquid reservoir 120 is constituted by the pair of cover plates 126, the outer peripheral surface of the application roll 121, and the outer peripheral surface of the doctor roll 122.
- the liquid reservoir 120 temporarily stores the main agent M.
- the main agent M is supplied to the liquid reservoir 120 from a main agent supply unit (not shown). Thereby, the main agent M stored in the liquid reservoir 120 is held at a constant amount.
- the doctor roll 122 is provided with a temperature control unit (not shown) in order to keep the main agent M stored in the liquid reservoir 120 at a constant temperature and stabilize the viscosity of the main agent M. Thereby, the outer peripheral surface of the doctor roll 122 is maintained at a constant temperature.
- the first coating unit 12 rotatably supports the metering roll 123, the coating roll 124, and the backing roll 125.
- the metering roll 123 is a roll for transferring the main agent M applied to the outer peripheral surface of the doctor roll 122, and is arranged such that the rotation axis of the metering roll 123 and the rotation axis of the doctor roll 122 are parallel.
- the outer peripheral surface of the metering roll 123 is an elastic material such as rubber, and is in pressure contact with the outer peripheral surface of the doctor roll 122.
- the coating roll 124 is a roll for transferring the main agent M applied to the outer peripheral surface of the metering roll 123, and is disposed such that the rotation axis of the coating roll 124 and the rotation axis of the metering roll 123 are parallel.
- the outer peripheral surface of the coating roll 124 is a metal material, and is in pressure contact with the outer peripheral surface of the metering roll 123.
- the backing roll 125 is disposed such that the coating roll 124 and the rotation axis are parallel to each other.
- the backing roll 125 sandwiches the first web W1 with the coating roll 124 and transports the first web W1.
- the backing roll 125 assists the transfer of the main ingredient M applied to the outer circumferential surface of the coating roll 124 to the first web W1.
- the outer peripheral surface of the backing roll 125 is an elastic material such as rubber.
- the temperature of the outer peripheral surface of the coating roll 124 is kept constant by a temperature control unit (not shown), like the doctor roll 122. Thereby, the viscosity of the main ingredient M is stabilized.
- the second unwinding unit 13 delivers the second web W2 to the second coating unit 14.
- the second web W 2 is rotatably attached to the web attachment portion 131 of the second unwinding portion 13.
- the second coating unit 14 applies, as a coating solution, a curing agent H of a two-component curing non-solvent adhesive to the second web W2 delivered from the second unwinding unit 13.
- the second coating unit 14 is a gravure coating machine that applies the curing agent H by gravure printing, and includes a gravure roll 141, a chamber 142, an impression cylinder 143, a coating liquid tank 144, and a pump 145.
- Temperature controller 146 is provided.
- the gravure roll 141 is a metal roll rotatably supported by the second coating unit 14.
- a plurality of recesses are formed by, for example, laser engraving.
- the gravure pattern to be applied to the surface of the gravure roll 141 is not particularly limited, but a honeycomb pattern is used in the present embodiment.
- the chamber 142 is a container for storing the curing agent H.
- the chamber 142 is disposed on one side of the gravure roll 141 in the radial direction.
- the chamber 142 is provided with the storage part 142a for storing the hardening agent H, as shown in FIG.
- the storage portion 142 a is open to the gravure roll 141 side. Then, a part of the outer circumferential surface of the gravure roll 141 is immersed in the curing agent H stored in the storage portion 142a.
- the chamber 142 includes a plate-shaped doctor blade 142 b.
- the doctor blade 142 b is provided so as to protrude toward the gravure roll 141 from the opening upper end portion of the storage portion 142 a.
- the material of the doctor blade 142b is not particularly limited, and may be metal or resin.
- the doctor blade 142b according to the present embodiment is made of stainless steel.
- the tip end portion of the doctor blade 142 b is in pressure contact with the outer circumferential surface of the gravure roll 141, and seals the downstream side of the storage portion 142 a in the roll rotation direction. Further, the doctor blade 142 b scrapes and measures the excess curing agent H attached to the outer peripheral surface of the gravure roll 141 by the rotation operation of the gravure roll 141.
- the chamber 142 includes a plate-like seal plate 142c.
- the seal plate 142c is made of resin, and is protruded from the lower end of the opening of the storage portion 142a toward the gravure roll 141.
- the tip end portion of the seal plate 142c is in pressure contact with the outer peripheral surface of the gravure roll 141, and seals the upstream side of the storage portion 142a in the roll rotation direction.
- the chamber 142 also includes a side plate 142d made of resin.
- the side plates 142 d are attached to both side surfaces of the chamber 142, that is, both end portions in the rotation axis direction of the gravure roll 141.
- the side surface of the side plate 142 d on the gravure roll 141 side has an arc shape along the gravure roll 141, and is in pressure contact with the gravure roll 141.
- the reservoir 142a is sealed by the doctor blade 142b, the seal plate 142c, and the pair of side plates 142d.
- the impression cylinder 143 is a roll that holds the second web W2 with the gravure roll 141 and conveys the second web W2. Further, the impression cylinder 143 causes the second web W2 to be in pressure contact with the gravure roll 141, thereby transferring the curing agent H applied to the outer circumferential surface of the gravure roll 141 to the second web W2.
- the coating liquid tank 144 is a container for storing the curing agent H. As shown in FIG. 3, the coating liquid tank 144 is connected to a pump 145 that causes the curing agent H to flow into the chamber 142 through a pipe. Moreover, the coating liquid tank 144 is connected with the chamber 142 via piping. Thus, the curing agent H overflowed from the storage portion 142 a of the chamber 142 is collected in the coating liquid tank 144.
- the pump 145 is connected to the coating liquid tank 144 and the chamber 142 through a pipe.
- the pump 145 supplies the curing agent H stored in the coating liquid tank 144 to the reservoir 142 a of the chamber 142.
- the pump 145 is, for example, a sine pump.
- the temperature controller 146 adjusts the temperature of the curing agent H stored in the coating liquid tank 144. Thereby, the temperature of the curing agent H is kept constant, and the viscosity of the curing agent H is stabilized.
- the temperature controller 146 is, for example, a water temperature controller that heats water, which is a heat medium, with a heater and circulates the surroundings of the curing agent H stored in the coating liquid tank 144.
- the laminator 15 is a bonding unit that bonds the first web W1 delivered from the first coating unit 12 and the second web W2 delivered from the second coating unit 14. 151 and a winding unit 152 for winding the bonded web.
- the bonding unit 151 has a coating liquid application surface of the first web W1 delivered from the first coating part 12 and a coating solution application surface of the second web W2 delivered from the second coating part 14. Paste together.
- the main component M applied to the first web W1 and the curing agent H applied to the second web W2 are mixed in the bonding unit 151, thereby curing the two-component curable non-solvent adhesive Is started, and the first web W1 and the second web W2 are bonded and fixed.
- the winding unit 152 winds up a composite film formed by bonding the first web W1 and the second web W2 in the bonding unit 151.
- the first web W1 is delivered from the first unwinding unit 11 to the first coating unit 12 which performs the first application process.
- each roll starts to rotate in the direction indicated by the arrow in FIG.
- a minute gap is provided between the application roll 121 and the doctor roll 122, and the main agent M stored in the liquid reservoir 120 is a doctor when the application roll 121 and the doctor roll 122 rotate. It is applied to the surface of the roll 122.
- the viscosity of the main agent M is higher than the viscosity of the curing agent H, and is, for example, about 500 mPa ⁇ S.
- the coating material stored in the liquid reservoir 120 is only the main agent M, the curing of the two-component curing non-solvent adhesive is not started. Therefore, the pot life of the coating material stored in the liquid reservoir 120 can be extended, and the waste of the adhesive can be reduced.
- the main agent M applied to the doctor roll 122 is sequentially transferred to the metering roll 123 and the coating roll 124.
- the respective rolls of the first coating unit 12 are set so as to sequentially increase the rotational speed. Thereby, the coating film thickness of the main agent M gradually decreases, and is adjusted by the coating roll 124 so as to be a predetermined coating film thickness (application amount).
- the main agent M transferred to the coating roll 124 is transferred to the first web W1 conveyed between the coating roll 124 and the backing roll 125.
- the main ingredient M is applied to the first web W1.
- the first coating unit 12 delivers the first web W1 to which the main agent M is applied to the laminator 15.
- the second web W2 is delivered from the second unwinding unit 13 to the second coating unit 14 that performs the second application process.
- the gravure roll 141 and the impression cylinder 143 start rotating in the direction indicated by the arrow in FIG. 3.
- the viscosity of the curing agent H is a viscosity suitable for a gravure coater and is lower than the viscosity of the main agent M. Specifically, it is 10 mPa ⁇ S or more and 500 mPa ⁇ S or less.
- the viscosity of the curing agent H is preferably 50 mPa ⁇ s or more and 300 mPa ⁇ s or less, more preferably 50 mPa ⁇ s or more and 200 mPa ⁇ s or less.
- the curing agent H applied to the gravure roll 141 is weighed by being scraped off by the doctor blade 142 b of the chamber 142.
- the volume and depth of the gravure pattern of the gravure roll 141 according to the present embodiment are set to be larger at the center than at the application width direction of the curing agent H, that is, both ends of the gravure roll 141 in the rotation axis direction. There is. As a result, the amount of application of the curing agent H in the center in the application width direction is larger than that in the application width direction.
- the coating amount of the curing agent H transferred to the second web W2 is larger at the center in the coating width direction than at both ends in the coating width direction.
- the rotation direction of the gravure roll 141 may be either forward rotation that is the same direction as the transport direction of the second web W2, or reverse rotation that is the reverse direction to the transport direction of the second web W2.
- the rotation direction of the gravure roll 141 according to the present embodiment is reverse rotation. That is, as shown in FIG. 3, the gravure roll 141 transfers the curing agent H to the second web W2 while rotating in the direction opposite to the transport direction of the second web W2. As a result, the appearance of the curing agent H applied to the second web W2 can be made excellent without longitudinal streaks, roll grains and the like.
- the second coating unit 14 delivers the second web W2 coated with the curing agent H to the laminator 15 that performs the bonding process.
- the bonding unit 151 of the laminator 15 applies the coating liquid application surface of the first web W1 delivered from the first coating unit 12 and the coating of the second web W2 delivered from the second coating unit 14.
- the first web W1 and the second web W2 are pasted together so as to be in contact with the liquid application surface.
- the main agent M applied to the first web W1 and the curing agent H applied to the second web W2 are mixed, and the curing of the two-component curable solventless adhesive starts.
- the amount of the curing agent H applied to the second web W2 is large at the central portion in the coating width direction.
- the application width of the curing agent H is set to be narrower than the application width of the main agent M. Since the viscosity of the main agent M is higher than the viscosity of the curing agent H, the curing agent H is pushed away by the main agent M and spread in the coating width direction, as shown in the cross-sectional view of FIG. Thereby, the main ingredient M and the curing agent H can be uniformly mixed in the coating width direction.
- FIG. 6 shows an example where the coating amount in the coating width direction of the curing agent H is uniform and the coating widths of the main agent M and the curing agent H are equal.
- FIG. 7 when the first web W1 and the second web W2 are laminated, the curing agent H having a low viscosity is pushed to the main agent M having a high viscosity. As a result, the curing agent H protrudes from both ends in the coating width direction to cause curing failure. In the above-described present embodiment (FIGS. 4 and 5), such a defect can be prevented.
- the coating weight ratio of the main agent M which is a coating liquid to be applied in the first coating portion 12 to the curing agent H which is a coating liquid to be applied in the second coating portion 14 is, for example, It is set as
- the coating amount that can be stably applied by the first coating unit 12 that is a roll coater is approximately 0.5 to 5.0 ⁇ m, and generally used in a range of 1.2 to 4.0 ⁇ m.
- the amount of adhesive applied in laminating of films used for food packaging etc. is generally 1.2 to 2.5 ⁇ m, and is mainly set in the range of 1.3 to 2.0 ⁇ m. .
- the coating amount ratio between the main agent M and the curing agent H is preferably close to 1: 1.
- the working portion 14 can be stably coated in the low coating amount region. Therefore, the application amount of the main agent M applied in the first coating unit 12 is set to an amount close to the lower limit within the range of the application amount that can be applied stably.
- the coating amount ratio of the main agent M and the curing agent H is 1: 1, as described above, the curing agent H having a low viscosity may protrude from both end portions in the coating width direction.
- the coating weight ratio between the coating liquid applied by the first coating unit 12 and the coating liquid applied by the second coating unit 14 is 1: 1. It is set in the range of 10: 1.
- the coating amount of the range that can be stably applied in the first coating unit 12 that is a roll coater is set, and the coating amount of the low viscosity curing agent H applied in the second coating unit 14 is reduced. , Can be suppressed.
- the composite film produced by bonding the first web W1 and the second web W2 together in the bonding unit 151 is conveyed to the winding unit 152. Then, the winding unit 152 winds up the composite film.
- the laminating apparatus 1 applies the main agent M and the curing agent H of the two-component curing non-solvent adhesive to the first web W1 and the second web W2, respectively. By bonding them together, curing of the adhesive is started to bond the webs together. Therefore, a fast curing two-component adhesive can be used without being limited by the pot life of the coating material. As a result, the adhesive can be cured quickly after bonding, and the occurrence of web deviation after bonding can be suppressed, and the quality of the composite film can be improved.
- the second coating unit 14 that applies the curing agent H having a low viscosity to the second web W2 is a gravure coating machine.
- a gravure coating machine As a result, even in the case of using a coating liquid having a low viscosity and causing problems such as dripping in the roll coater, dripping can be prevented and coating quality can be improved.
- the configuration of the second coating unit 14 can be simplified to miniaturize the laminating apparatus 1.
- the first coating portion 12 for applying the main agent M having a high viscosity to the first web W1 is a roll coater. Thereby, the main ingredient M with high viscosity can be applied without clogging of the roll.
- the main agent M having a high viscosity is applied by the first coating unit 12 which is a roll coater, and the curing agent H having a low viscosity is applied by the second coating unit 14 which is a gravure coating machine.
- the viscosity of the curing agent H is higher than the viscosity of the main agent M
- the curing agent H may be applied in the first coating unit 12 and the main agent M may be applied in the second coating unit 14 which is a gravure coating machine.
- the main agent M having a low viscosity is applied, it is possible to prevent dripping and improve the application quality.
- the 1st coating part 12 was used as the roll coater in the said embodiment, it is not restricted to this.
- the first coating unit 12 may be a gravure coating machine.
- problems such as dripping can be prevented.
- the structure of the first coating unit 12 can be simplified, and the entire laminating apparatus 1 can be miniaturized.
- the viscosity of the coating liquid applied by the first coating unit 12 is higher than the viscosity of the coating liquid applied by the second coating unit 14, but the present invention is limited thereto. Absent.
- the viscosity of the coating liquid applied by the first coating unit 12 may be lower than the viscosity of the coating liquid applied by the second coating unit 14. In this case, for example, as described above, by making the first coating unit 12 a gravure coating machine, dripping can be prevented in both the first coating unit 12 and the second coating unit 14. .
- the temperature controller 146 controls the temperature of the curing agent H stored in the coating liquid tank 144.
- the present invention is not limited thereto.
- the temperature of the curing agent H stored in the storage portion 142 a of the chamber 142 may be adjusted.
- the temperature of the gravure roll 141 may be adjusted. Thereby, the viscosity of the curing agent H at the time of coating can be stabilized, and coating quality can be improved.
- the laminator 15 is disposed between the first coating unit 12 and the second coating unit 14, but the present invention is not limited to this.
- the second coating unit 14 may be disposed between the first coating unit 12 and the laminator 15.
- the first coating unit 12 and the second coating unit 14 may be interchanged and disposed. Thereby, the layout of each part can be optimized and the laminating apparatus 1 can be miniaturized. Further, by laying out the coating liquid coated surface of the first web W1 or the coating liquid coated surface of the second web W2 downward, it is possible to suppress the entry of foreign matter to the bonding surface. .
- the rotation direction of the gravure roll 141 is forward rotation, which is the same direction as the transport direction of the second web W2, and reverse rotation, which is the reverse direction to the transport direction of the second web W2. Any one may be used.
- the appropriate rotational speed of the gravure roll 141 will be described.
- the coating liquid when the line speed, that is, the feed speed of the second web W2 is 80 m / min, and the circumferential speed of the gravure, which is the rotational speed of the gravure roll 141, is changed.
- the material of the second web W2 according to this example is a PET (polyethylene terephthalate) film having a thickness of 12 ⁇ m.
- the horizontal axes of the graphs in FIGS. 8A and 8B indicate the gravure circumferential speed, with the negative side representing reverse rotation and the positive side representing forward rotation. Moreover, the vertical axis
- the appropriate speed range of reverse rotation in this example is a range larger than -100 m / min and smaller than -40 m / min.
- the appropriate speed range of the positive rotation in this example is a range larger than +20 m / min and smaller than +125 m / min.
- the coating liquid when the line speed, that is, the feed speed of the second web W2 is 100 m / min, and the circumferential speed of the gravure, which is the rotational speed of the gravure roll 141, is changed. It is a graph which shows the example of the application amount of.
- the material of the second web W2 according to this example is a PET film with a thickness of 12 ⁇ m.
- the horizontal axes of the graphs in FIGS. 9A and 9B indicate the gravure circumferential speed, with the negative side representing reverse rotation and the positive side representing forward rotation.
- shaft of the graph of FIG. 9 (A) and (B) has shown the application quantity of the coating liquid.
- FIG. 9 (B) when the gravure roll 141 is made reverse rotation, the application amount of a coating liquid increases, so that the rotational speed of a reverse rotation direction is large. However, if the gravure peripheral velocity exceeds -80 m / min, the coating amount decreases, and the gravure peripheral velocity becomes -120 m / min, and the behavior of the second web W2 becomes unstable.
- the appropriate speed range of reverse rotation in this example is a range larger than -110 m / min and smaller than -40 m / min.
- the appropriate speed range of positive rotation in this example is a range larger than +10 m / min and smaller than +120 m / min.
- the rotation direction of the gravure roll 141 may be either forward rotation or reverse rotation, but the proper speed range is wider for forward rotation. Therefore, by setting the rotation direction of the gravure roll 141 to be positive rotation that is the same direction as the conveyance direction of the second web W2, adjustment of the rotation speed of the gravure roll 141, that is, the circumferential speed of the gravure becomes easy.
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Abstract
Description
二液硬化型接着剤の主剤及び硬化剤のいずれか一方を塗工液として第1のウエブに塗布する第1塗工部と、
二液硬化型接着剤の主剤及び硬化剤のうち前記第1のウエブに塗布していないもう一方を塗工液として第2のウエブに塗布する第2塗工部と、
前記第1のウエブの塗工液塗布面と前記第2のウエブの塗工液塗布面とを貼り合わせる貼合部と、を備え、
前記第2塗工部は、
グラビア塗工機である。
こととしてもよい。
塗工液を貯留する塗工液タンクと、
前記塗工液タンクに貯留された塗工液の温度を調節する温度調節機と、を備える、
こととしてもよい。
ロールコーターである、
こととしてもよい。
前記塗工液の塗布幅方向中心部の塗布量を、塗布幅方向両端部の塗布量より多く塗布する、
こととしてもよい。
前記塗工液を転写するグラビアロールを、前記第2のウエブの搬送方向と同方向に回転可能である、
こととしてもよい。
二液硬化型接着剤の主剤及び硬化剤のいずれか一方を塗工液として第1のウエブに塗布する第1塗布工程と、
二液硬化型接着剤の主剤及び硬化剤のうち前記第1のウエブに塗布していないもう一方を塗工液として第2のウエブにグラビア印刷で塗布する第2塗布工程と、
前記第1のウエブの塗工液塗布面と前記第2のウエブの塗工液塗布面とを貼り合わせる貼り合わせ工程と、
を含む。
こととしてもよい。
10mPa・S以上500mPa・S以下である、
こととしてもよい。
前記第2のウエブの搬送方向と同方向に、グラビアロールを回転させて、前記第2のウエブに前記塗工液を塗布する、
こととしてもよい。
上述の通り、本実施の形態に係るグラビアロール141の回転方向は、第2のウエブW2の搬送方向と同方向である正回転、第2のウエブW2の搬送方向と逆方向であるリバース回転のいずれでもよい。以下、グラビアロール141の適正な回転速度について説明する。
Claims (10)
- 二液硬化型接着剤の主剤及び硬化剤のいずれか一方を塗工液として第1のウエブに塗布する第1塗工部と、
二液硬化型接着剤の主剤及び硬化剤のうち前記第1のウエブに塗布していないもう一方を塗工液として第2のウエブに塗布する第2塗工部と、
前記第1のウエブの塗工液塗布面と前記第2のウエブの塗工液塗布面とを貼り合わせる貼合部と、を備え、
前記第2塗工部は、
グラビア塗工機である、
ラミネート装置。 - 前記第1塗工部で塗布される塗工液と、前記第2塗工部で塗布される塗工液との塗工重量比は、1:1から10:1の範囲である、
請求項1に記載のラミネート装置。 - 前記第2塗工部は、
塗工液を貯留する塗工液タンクと、
前記塗工液タンクに貯留された塗工液の温度を調節する温度調節機と、を備える、
請求項1又は2に記載のラミネート装置。 - 前記第1塗工部は、
ロールコーターである、
請求項1乃至3のいずれか一項に記載のラミネート装置。 - 前記第2塗工部は、
前記塗工液の塗布幅方向中心部の塗布量を、塗布幅方向両端部の塗布量より多く塗布する、
請求項1乃至4のいずれか一項に記載のラミネート装置。 - 前記第2塗工部のグラビア塗工機は、
前記塗工液を転写するグラビアロールを、前記第2のウエブの搬送方向と同方向に回転可能である、
請求項1乃至5のいずれか一項に記載のラミネート装置。 - 二液硬化型接着剤の主剤及び硬化剤のいずれか一方を塗工液として第1のウエブに塗布する第1塗布工程と、
二液硬化型接着剤の主剤及び硬化剤のうち前記第1のウエブに塗布していないもう一方を塗工液として第2のウエブにグラビア印刷で塗布する第2塗布工程と、
前記第1のウエブの塗工液塗布面と前記第2のウエブの塗工液塗布面とを貼り合わせる貼り合わせ工程と、
を含むラミネート方法。 - 前記第1塗布工程で塗布される塗工液と、前記第2塗布工程で塗布される塗工液との塗工重量比は、1:1から10:1の範囲である、
請求項7に記載のラミネート方法。 - 前記第2塗布工程で塗布される塗工液の粘度は、
10mPa・S以上500mPa・S以下である、
請求項7又は8に記載のラミネート方法。 - 前記第2塗布工程では、
前記第2のウエブの搬送方向と同方向に、グラビアロールを回転させて、前記第2のウエブに前記塗工液を塗布する、
請求項7乃至9のいずれか一項に記載のラミネート方法。
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EP18871097.4A EP3702137B1 (en) | 2017-10-24 | 2018-10-12 | Lamination device and lamination method |
US16/753,590 US20200331249A1 (en) | 2017-10-24 | 2018-10-12 | Lamination apparatus and lamination method |
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JP6593950B2 (ja) | 2019-10-23 |
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US20200331249A1 (en) | 2020-10-22 |
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