JP2006231515A - Trimming method for resin coat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a trimming method for a resin coat which makes the recycling of resin coat ears possible after trimming, allows easy trimming for a resin which is fragile when cooled, and improves the use efficiency of the aforementioned laminate sheets by thinning resin coated portions on both sides of the laminate sheets. <P>SOLUTION: This invention is a trimming method for the ear portion 17 of the resin coat 16, which is generated when resin is laminated to the base material 10. To at least one side of the base material, melted resin R is pushed out from a T die 15, which is broader than the width K of the base material, so that the melted resin R passes through the gap between a pair of coater rolls 11. A tube-shaped elastic body 14 is attached to the surface of the coater roll, and through the elastic body, resin coated base material is sandwiched, while the separation force is given to the ear potions on the resin coat. In this arrangement, trimming is characteristically implemented during the period in which ears are not yet cooled. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a resin film trimming method for trimming an ear portion generated when a resin film is formed by extruding and laminating a resin on a surface of a substrate using a T-die.

  Conventionally, for example, when manufacturing a laminate having a resin film formed on the surface of a metal plate, it is necessary to treat both ends of the resin film that has become thick due to the neck-in phenomenon after forming the ears on both sides of the laminate. Trimming was performed with a considerable amount of the substrate width after trimming with a minimal metal plate, or after laminating the resin coating with a sufficiently wide metal substrate width so as not to cause an ear.

However, in the former case, there is a problem that the ear part is easily dropped and the substrate is entrapped and adhered to the trimming process. On the other hand, in the latter case, the thick part of the resin film cannot be used. There is a problem that usage efficiency deteriorates. In both cases, since the trimmed resin film is integrated with the metal plate, the trimmed resin film cannot be recycled.
Therefore, the present invention has been made in view of the above problems, and enables recycling of the ear portion of the resin film after trimming. Further, it can be easily trimmed even with a brittle resin system when cooled, and the laminate plate. It is an object of the present invention to provide a trimming method for a resin film that can improve the use efficiency of the laminate plate by thinning the resin film portions on both sides.

The trimming method for a resin coating according to claim 1 of the present invention is a trimming method for an ear portion of a resin coating that occurs when a resin is laminated on a substrate, and is wider than the substrate width on at least one side of the substrate. The molten resin is extruded from the T-die and passed between a pair of coater rolls. A cylindrical elastic body is mounted on the surface of the coater roll, and the resin-coated base material is sandwiched between the elastic bodies and the ears of the resin coating A trimming force is applied to the ear portion, and trimming is performed while the ear portion does not cool.
The trimming method for a resin film according to claim 2 is the method according to claim 1, wherein a pair of guide belts is disposed downstream of the coater roll, and the relationship between the sheet passing speed V1 and the peripheral speed V2 of the guide belt is equalized. It is characterized in that a pulling force is applied to the ear portion without speed.
A trimming method for a resin film according to a third aspect is the method according to the second aspect, wherein the guide belt is disposed at a predetermined angle θ with respect to the direction of the plate of the base material, and the trimmed resin film is sandwiched between the ears. It is characterized by the fact that it is discharged.
A trimming method for a resin film according to a fourth aspect of the present invention is the substrate coating plate according to the first aspect, wherein a pair of discharge belts is disposed downstream of the pair of guide belts mounted between the coater roll and the belt mounting roll. The relationship between the speed V1 and the peripheral speed V3 of the discharge belt is V1 <V3, and a pulling force is applied to the ear portion.
The trimming method for the resin film according to claim 5 is the trimming method for the resin film according to claim 4, wherein the discharge belt is disposed at an inclination of a predetermined angle θ with respect to the sheet passing direction of the substrate, and the trimmed resin film is sandwiched between the ears. It is characterized by the fact that it is discharged.
The trimming method of the resin film according to claim 6 is the method according to claim 1, wherein the ear portion of the resin film is sucked by a blower arranged downstream of the coater roll, and is inclined at a predetermined angle θ with respect to the sheet passing direction of the substrate. The relationship between the substrate passing speed V1 and the trimmed resin film ear speed V4 is V1 <V4, and a pulling force is applied to the ear section.
A trimming method for a resin film according to a seventh aspect is the method according to the first aspect, wherein the ear portion of the resin film is sandwiched between guide rolls arranged downstream of the coater roll, and is inclined at a predetermined angle θ with respect to the sheet passing direction of the substrate. The base plate passing speed V1 and the circumferential speed V4 of the guide roll are set to V1 <V4, and a pulling force is applied to the ear portion.

According to the present invention, trimming is easily, reliably, and smoothly performed in trimming the ear portion of the resin coating.
In addition, it is possible to recycle the resin coating after trimming, and even when it is cooled, it can be easily trimmed even with a fragile resin system, and the resin coating on both sides of the laminate plate is thinned to improve the use efficiency of the laminate plate. Can be planned.

  Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a perspective view of a resin film trimming method according to a first embodiment of the present invention. FIG. 2 is a schematic side view of the resin film trimming method according to the first embodiment of the present invention. FIG. 3 is a schematic cross-sectional view showing a trimmed state of the resin film on the right side of the center line according to the first embodiment of the present invention. FIG. 4 is a schematic cross-sectional view showing another trimming state of the resin film on the right side of the center line according to the first embodiment of the present invention. FIG. 5 is a schematic side view of the trimming of the resin film according to the second embodiment of the present invention. FIG. 6 is another schematic side view of the trimming of the resin film according to the second embodiment of the present invention. FIG. 7 is a schematic side view of trimming of a resin film according to the third embodiment of the present invention. FIG. 8 is another schematic side view of the trimming of the resin film according to the third embodiment of the present invention. FIG. 9 is a schematic side view of trimming of a resin film according to the fourth embodiment of the present invention. FIG. 10 is a schematic cross-sectional view showing another trimming state of the resin film on the right side of the center line according to the third and fourth embodiments of the present invention. FIG. 11 is a schematic cross-sectional view showing another trimming state of the resin film on the right side of the center line according to the third and fourth embodiments of the present invention. FIG. 12 is a schematic explanatory view showing a trimming state of the resin film on the right side of the center line according to the third and fourth embodiments of the present invention. FIG. 13 is a schematic side view of resin film trimming according to the fifth embodiment of the present invention. FIG. 14 is a schematic side view of trimming of a resin film according to the sixth embodiment of the present invention. FIG. 15 is a schematic side view of trimming a resin film according to a modification of another embodiment of the present invention.

[First Embodiment]
A first embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the metal plate 10 is passed between a pair of coater rolls 11 while extruding the molten resin R from the T die 15 toward both surfaces of the metal plate 10 to be passed. A resin coating 16 is laminated on both surfaces of the metal plate 10. Thereafter, the ears 17 formed on both side edges of the resin coating 16 are trimmed while the ears are not cooled, and the trimmed ears 17 are sandwiched by the guide belt 19 that rotationally drives and discharged to the outside. Here, the temperature that does not cool is different depending on the type of the resin film, but may be any temperature that does not solidify. At this time, trimming is performed when the temperature of the trimmed ear portion 17, more specifically, the portion where the ear is cut near the end of the base material is equal to or higher than (Tg-20 ° C.) if the resin coating is a polyester resin, for example It is preferable that the trimming is performed easily and reliably. If the temperature is lower than the above temperature, trimming by the nip force or the separation force becomes difficult, and the ears are easily cut off when the ears are pulled after that.

  In this embodiment, as shown in FIGS. 1 and 2, a pair of long coater rolls 11 are provided on both surface sides of a metal plate 10 that is an example of a substrate that is passed in the vertical direction. 10 are arranged in a state of being sandwiched. As shown in FIGS. 2 and 3, the coater roll 11 is mounted with a cylindrical elastic body 14 on the surface of a long roll body 12, leaving a belt mounting portion 13 that forms both ends. The metal plate 10 is sandwiched between the pair of coater rolls 11 via the elastic body 14 in a state where the metal plate 10 is elastically pressed.

On the other hand, as shown in FIGS. 1 and 2, a pair of T dies 15 capable of extruding the molten resin R are provided above (upstream) the pair of coater rolls 11. Then, the molten resin R is extruded from these T dies 15 to the nip portions formed between the corresponding surfaces of the coater roll 11 and the metal plate 10, and then the molten resin R is applied to the metal plate 10 by the pair of coater rolls 11. By pressure bonding, the resin coating 16 is formed on both surfaces of the metal plate 10 to manufacture the laminate plate 10A.
At this time, by setting the width of the T die 15 so that the film width of the molten resin R from the T die 15 is wider than the width of the metal plate 10, the ear portion 17 of the resin coating 16 is shown in FIG. In this way, the elastic body 14 is positioned between the guide belts 19 attached to the belt attaching portions 13 provided at both ends.

Moreover, as shown in FIG.1 and FIG.2, it is the both sides of the metal plate 10 which is an example of the base material penetrated by the orthogonal | vertical direction, Comprising: The position of predetermined distance below (downstream) from a pair of long coater roll 11 A pair of belt mounting rolls 18 are arranged apart from each other so as not to contact both surfaces of the metal plate 10, and the trimmed resin film 16 is discharged while preventing the ear portions 17 from being wrapped around the coater roll 11. .
Although not shown, the pair of belt mounting rolls 18 in the width direction of the base material may be in the form of a long roll like the coater roll 11.

Further, as shown in FIGS. 1 and 3, the pair of guide belts 19 are respectively attached to the belt mounting portions 13 at both ends of the coater roll 11 so as to escape from the surface of the elastic body 14 of the coater roll 11 to form a step. And a belt mounting roll 18.
Each guide belt 19 is arranged in parallel along both side edges of the metal plate 10, and the upper and lower ends thereof are wound around the belt mounting portion 13 and the belt mounting roll 18 at both ends of the coater roll 11, respectively. Has been.

  In the present embodiment, as shown in FIG. 3, the relationship between the width of the metal plate 10 (that is, the base material width K) and the width L of the elastic body 14 on the coater roll 11 is expressed as follows. The trimming state in the case of the width (elastic body width L) is shown, and the ear portion 17 of the resin coating 16 is sheared and trimmed by the nip pressure Pl of the edge portion of the metal plate 10 and the elastic body 14 of the coater roll 11.

In the present embodiment, as shown in FIG. 4, the relationship between the width of the metal plate 10 (base material width K) and the width L of the elastic body 14 on the coater roll 11 is expressed as follows. Trimming may be performed by setting the width (elastic body width L) and shearing the edge portion 17 of the resin film 16 with the edge portion of the metal plate 10 and the nip pressure P2 of the guide belt 19.
As described above, even when trimming is performed using the edge of the metal plate, it is possible to remove the resin ears continuously and stably near the edge of the base material.
In addition, by trimming in this way, it is possible to remove the resin ears continuously and stably near the edge of the substrate without using a knife or rotary blade that may interfere with the substrate. Become.

[Second Embodiment]
FIG. 5 shows a second embodiment of the present invention. When trimming the ear 17 of the resin coating 16, the relationship between the plate passing speed V1 of the substrate 10 and the peripheral speed V2 of the guide belt 19 is not made constant. At the time of trimming, a pulling force for peeling the coating from the metal plate is applied to trim the ear portion 17 of the resin coating 16.

In the present embodiment, as shown in FIG. 6, the pair of guide belts 19 are inclined by a predetermined angle θ (inclination angle) with respect to the plate passing direction of the metal plate 10, and the guide belts 19 in the inclined state are interposed. It is also possible to sandwich the trimmed resin film 16 with the ears 17 and discharge it to the outside.
As described above, by inclining the guide belt 19, discharge of the ear portion 17 of the resin coating 16 is started almost simultaneously with trimming, and the trimmed ear portion 17 is separated from the sheet passing direction of the metal plate 10. Therefore, the ear portion 17 once cut off can be smoothly and reliably discharged to the outside without being reattached to the laminate plate 10A or wound around the coater roll 11.

[Third Embodiment]
FIG. 7 shows a third embodiment of the present invention. After laminating a resin film 16 on a substrate 10 with a coater roll 11, a guide belt 19 is arranged below (downstream) the coater roll 11, and the guide belt In 19, the ear 17 of the resin coating 16 is trimmed. Then, the trimming is performed by applying a pulling force without making the relationship between the sheet passing speed V1 of the base material 10 and the peripheral speed V2 of the guide belt 19 constant at this time. In the present embodiment, as shown in FIG. 8, a pair of guide belts 19 disposed below the coater roll 11 is inclined by a predetermined angle θ with respect to the sheet passing direction of the metal plate 10 and trimmed resin film. The 16 ears 17 may be sandwiched and discharged to the outside.

[Fourth Embodiment]
FIG. 9 shows a fourth embodiment of the present invention. In this embodiment, a pair of discharge belts 20 are inclined at a predetermined angle θ with respect to the plate passing direction of the metal plate 10 below the coater roll 11 and the guide belt 19. In addition, the relation between the plate speed V1 of the metal plate 10 and the peripheral speed V3 of the discharge belt 20 is V1 <V3.
As a result, in this embodiment, after the resin film 16 is laminated on the substrate 10 with the coater roll 11 and the ear 17 of the resin film 16 is guided by the guide belt 19, trimming is performed by the pulling force of the discharge belt 20. Done. The discharge belt 20 does not need to be inclined at the predetermined angle θ, but is inclined at the predetermined angle θ in order to prevent the trimmed ear portion 17 from being wrapped around the guide roll and smoothly and reliably discharged to the outside. It is preferable.

  FIG. 10 to FIG. 12 are reference views showing a trimming state when performing the trimming by applying the separating force of the third and fourth embodiments described above. The state shown in FIG. 10 shows a case where trimming is performed while pressing the vicinity of the ear portion 17 of the resin coating 16 with the roll edge of the guide roll 18, that is, the edge 31 of the elastic body 21 of the guide roll 18. On the other hand, the state shown in FIG. 11 shows a case where the above-described ear portion 17 is trimmed by the edge of the base material 10, and in any case, trimming is performed by applying a separating force.

  In this case, as shown in FIG. 12, a pair of guide belts 19 are used in the third embodiment shown in FIGS. 7 and 8, and a pair of guide belts 19 are used in the fourth embodiment shown in FIG. It is preferable to dispose the discharge belt 20 so as to be separated outward in the width direction of the metal plate 10 in terms of easily, reliably and smoothly trimming the ear portion 17 of the resin coating 16 by applying a separating force. In addition, a method of approaching initially and gradually separating them can be considered.

[Fifth Embodiment]
FIG. 13 shows a fifth embodiment of the present invention, in which the ears 17 of the resin coating 16 are sucked by a blower (vacuum duct) 22 disposed below the coater roll, and the metal plate 10 is passed through. Suction and discharge are performed while tilted at a predetermined angle θ. At this time, the base plate passing speed V1 or the suction of the blower 22 is adjusted, and the relationship between the base plate passing speed V1 and the speed V4 of the ear portion 17 of the resin film 16 to be trimmed is V1 <V4. The ear 17 can be trimmed by applying a pulling force.

[Sixth Embodiment]
FIG. 14 shows a sixth embodiment of the present invention, in which, as in the fifth embodiment described above, the ear 17 of the resin coating 16 is sandwiched between guide rolls (nip rolls) 23 arranged below the coater roll, and a metal plate It pulls in the state inclined by the predetermined angle (theta) with respect to the 10 plate | board directions, and discharges. At this time, the speed V1 of the base material and the peripheral speed of the guide roll 23 are adjusted, and the relationship between the plate passing speed V1 of the base material 10 and the speed V4 of the ear portion 17 of the resin coating 16 to be trimmed is described above. As in the fifth embodiment, Vl <V4.

  The second to sixth embodiments described above can be used in combination with the first embodiment. That is, the trimming of the ear portion 17 of the resin coating 16 is performed by cutting the edge portion of the metal plate 10 and the nip pressure Pl of the elastic body 14 of the coater roll 11, the nip pressure P2 of the guide belt 19, the speed V1 of the base material 10 and the guide belt 19. The trimming of the ear portion 17 is performed by using a pulling force caused by the circumferential velocity V2 of the discharge belt 20 being not equal, the peripheral velocity V3 of the discharge belt 20, or the velocity V4 of the ear portion of the resin coating 16, etc. It can be performed.

  The resin film trimming method and apparatus according to the present invention have been described with reference to the first to sixth embodiments. However, the present invention is not limited to these embodiments, and other Embodiments and modifications are possible. For example, in the first to fourth embodiments described above, the blower, vacuum duct, guide roll, nip roll, etc. described in the fifth and sixth embodiments are provided below (downstream) the guide belt or the discharge belt. The trimmed resin film ears may be collected. Further, as shown in FIG. 15, the T-die 15 is provided so as to laminate the resin only on one side of the metal plate 10 as a base material, and also for trimming when a resin film is formed on one side of the metal plate 10. Needless to say, it can be applied.

In addition, the raw material used by this invention is demonstrated below.
[Base material]
Although it is desirable to use a metal material as a base material used in the present invention, it is preferable to use various surface-treated steel plates, light metal plates, metal foils and the like as the metal base material.

As the surface-treated steel sheet, a cold-rolled steel sheet obtained by performing one kind or two or more kinds of surface treatments such as zinc plating, tin plating, nickel plating, electrolytic chromic acid treatment, and chromic acid treatment can be used. An example of a suitable surface-treated steel sheet is an electrolytic chromic acid-treated steel sheet, particularly comprising a 10-200 mg / m ² metallic chromium layer and a 1-50 mg / m ² chromium hydrated oxide layer in terms of metallic chromium. The combination of coating film adhesion and corrosion resistance is excellent. Another example of the surface-treated steel plate is a tin plate having a tin plating amount of 0.6 to 11.2 g / m ² . It is desirable that the tin plate is subjected to chromic acid treatment or chromic acid / phosphoric acid treatment so that the amount of chromium is 1 to 30 mg / m ^{2 in} terms of metallic chromium. Further, an aluminum-coated steel sheet subjected to aluminum plating, aluminum pressure welding, or the like can also be used.

As the metal plate, a light metal plate of an aluminum alloy plate in addition to a pure aluminum plate is used. The aluminum alloy plate excellent in terms of corrosion resistance and workability is Mn: 0.2 to 1.5% by weight, Mg: 0.8 to 5% by weight, Zn: 0.25 to 0.3% by weight , And Cu: 0.16 to 0.26% by weight, with the balance being Al. These metal plates are also preferably subjected to chromic acid treatment or chromic acid / phosphoric acid treatment so that the chromium amount is 20 to 300 mg / m ^{2 in} terms of metallic chromium.

  In general, the thickness of the metal plate is preferably 0.10 to 0.50 mm. Among these, in the case of a surface-treated steel plate, the thickness is 0.10 to 0.30 mm, and in the case of a light metal plate, it is 0. Those having a thickness of .15 to 0.40 mm are preferable. Of course, it is necessary to take into consideration that the difference depends on the type of metal and the use and size of the laminate material.

  An adhesive primer layer can also be formed on the metal material. The primer needs to exhibit excellent adhesion to both the metal material and the thermoplastic resin. An example of the primer coating is a phenol epoxy coating composed of a resol type phenol aldehyde resin derived from various phenols and formaldehyde, and a bisphenol type epoxy resin. A paint containing 5:95 weight ratio, particularly 40:60 to 10:90 weight ratio, can be preferably applied. The thickness of the adhesive primer layer is preferably about 0.3 to 5 μm from the viewpoint of adhesion and the like.

[resin]
Although it is desirable to use a thermoplastic resin as the resin to be coated on the substrate, any thermoplastic resin may be used as long as it can be extruded and has film-forming properties. For example, low-density polyethylene, high-density polyethylene, polypropylene, poly 1-butene, poly 4-methyl-1-pentene, or random α-olefins such as ethylene, pyropyrene, 1-butene, 4-methyl-1-pentene, etc. Polyolefins such as block copolymers, ethylene / vinyl acetate copolymers, ethylene / vinyl alcohol copolymers, ethylene / vinyl compound copolymers such as ethylene / vinyl chloride copolymers, polystyrene, acrylonitrile / styrene copolymers, ABS, styrene resin such as α-methylstyrene / styrene copolymer, polyvinyl chloride, polyvinylidene chloride, vinyl chloride / vinylidene chloride copolymer, polyvinyl compound such as polymethyl acrylate and polymethyl methacrylate, nylon 6 , Nylon 6-6, nylon Any of resins such as polyamides such as 6-10, nylon 11 and nylon 12, thermoplastic polyesters such as polyethylene terephthalate and polybutylene terephthalate, polycarbonate, polyphenylene oxide and the like or mixtures thereof can be applied.

  Examples of a particularly suitable thermoplastic resin from the viewpoint of film properties, processability, corrosion resistance, and the like include thermoplastic polyesters or copolymerized polyesters, blends thereof, and laminates thereof. Of these, polyesters mainly composed of ethylene terephthalate units are preferred. Polyethylene terephthalate can be used as the raw material polyester, but lowering the maximum crystallinity is desirable from the viewpoint of impact resistance and workability of the laminate. Therefore, copolymer polyester units other than ethylene terephthalate are included in the polyester. It is also preferable to introduce.

  It is particularly preferable to use a copolyester having a melting point of 210 to 252 ° C. mainly composed of ethylene terephthalate units and containing a small amount of other ester units. The melting point of homopolyethylene terephthalate is generally 255 to 265 ° C.

  Generally, 70 mol% or more, particularly 75 mol% or more of the dibasic acid component in the copolyester is composed of a terephthalic acid component, and 70 mol% or more, particularly 75 mol% or more of the diol component is composed of ethylene glycol. It is preferable that 1 to 30 mol%, particularly 5 to 25%, of the acid component and / or diol component is composed of a dibasic acid component other than terephthalic acid and / or a diol component other than ethylene glycol.

Dibasic acids other than terephthalic acid include aromatic dicarboxylic acids such as isophthalic acid, phthalic acid and naphthalenedicarboxylic acid: alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid: succinic acid, adipic acid, sebacic acid, dodecanedione Examples of the diol component other than ethylene glycol include propylene glycol, 1,4-butanediol, diethylene glycol, 1,6-hexylene glycol, and the like. 1 type, or 2 or more types, such as cyclohexane dimethanol and the ethylene oxide adduct of bisphenol A, are mentioned.
The combination of these comonomers must be such that the melting point of the copolyester is within the above range. In addition, multifunctional monomers such as trimellitic acid, pyromellitic acid, and pentaerythritol can be used in combination.

  The polyester used should have a molecular weight sufficient to form a film, for which purpose an intrinsic viscosity (IV) of 0.55 to 1.9 dl / g, in particular 0.65 to 1.4 dl / g. Those in the range of are desirable.

  The thermoplastic resin coating layer may contain an inorganic filler (pigment) for the purpose of concealing the metal plate and assisting the transmission of the wrinkle-pressing force to the metal plate during drawing-redraw molding. Further, this film may be blended with known film compounding agents, for example, antiblocking agents such as amorphous silica, various antistatic agents, lubricants, antioxidants, ultraviolet absorbers, and the like according to known formulations. it can.

  Inorganic fillers include rutile or anatase type inorganic white pigments such as titanium dioxide, zinc white, gloss white, etc .; barite, precipitated barium sulfate, calcium carbonate, gypsum, precipitated silica, aerosil, talc, calcined or unfired White extender pigments such as clay, barium carbonate, alumina white, synthetic or natural mica, synthetic calcium silicate, magnesium carbonate; black pigments such as carbon black and magnetite; red pigments such as Bengala; yellow pigments such as Siena; A blue pigment such as cobalt blue can be mentioned. These inorganic fillers can be blended in an amount of 10 to 500% by weight, particularly 10 to 300% by weight, based on the resin.

  As described above, according to the present invention, trimming is easily, surely, and smoothly performed in trimming the ears of the resin coating. In addition, it is possible to recycle the resin coating after trimming, and even when it is cooled, it can be easily trimmed even with a fragile resin system, and the resin coating on both sides of the laminate plate is thinned to improve the use efficiency of the laminate plate. Can be planned.

It is a perspective view of the trimming method of the resin film which concerns on the 1st Embodiment of this invention. It is a schematic side view of the resin film trimming method according to the first embodiment of the present invention. It is a schematic sectional drawing which shows the trimming state of the resin film on the right side from the centerline based on the 1st Embodiment of this invention. It is a schematic sectional drawing which shows the other trimming state of the resin film on the right side from the centerline based on the 1st Embodiment of this invention. It is the side surface schematic of trimming of the resin film which concerns on the 2nd Embodiment of this invention. It is the other side surface schematic diagram of trimming of the resin film which concerns on the 2nd Embodiment of this invention. It is the side surface schematic of trimming of the resin film which concerns on the 3rd Embodiment of this invention. It is the other side surface schematic diagram of the trimming of the resin film which concerns on the 3rd Embodiment of this invention. It is the side surface schematic of trimming of the resin film which concerns on the 4th Embodiment of this invention. It is a schematic sectional drawing which shows the other trimming state of the resin film of the right side from the centerline based on the 3rd and 4th embodiment of this invention. It is a schematic sectional drawing which shows the other trimming state of the resin film of the right side from the centerline based on the 3rd and 4th embodiment of this invention. It is a schematic explanatory drawing which shows the trimming state of the resin film of the right side from the centerline based on the 3rd and 4th embodiment of this invention. It is a schematic side view of trimming of the resin film which concerns on the 5th Embodiment of this invention. It is a schematic side view of trimming of the resin film which concerns on the 6th Embodiment of this invention. It is a schematic side surface of trimming of the resin film which concerns on the modification of the other form of this invention.

Explanation of symbols

10 ... Metal plate (base material),
10A ... Laminated plate,
11 ... Coater roll,
12 ... roll body,
13 ... belt mounting part,
14 ... an elastic body,
15 ... T-die,
16 ... resin coating,
17 ... ears,
18 ... belt wearing roll,
19 ... guide belt,
20 ... discharge belt,
21 ... Blower,
22 ... Guide roll,
23 ... Guide roll,
R: Molten resin,
θ ... Inclination angle,
K: Base material width,
L ... Elastic body width

Claims (7)

A method for trimming the ears of a resin coating that occurs when a resin is laminated on a base material, wherein at least one surface of the base material is extruded from a T-die having a width wider than the base material width between a pair of coater rolls. A cylindrical elastic body is mounted on the surface of the coater roll, the resin-coated base material is sandwiched through the elastic body, and a pulling force is applied to the ear portion of the resin film, so that the ear portion does not cool. A trimming method for a resin film, wherein trimming is performed inside. A pair of guide belts is disposed downstream of the coater roll, and a pulling force is applied to the ear portion without making the relationship between the sheet passing speed V1 and the circumferential speed V2 of the guide belt constant. The trimming method of the resin film according to claim 1, wherein 3. The guide belt according to claim 2, wherein the guide belt is disposed to be inclined at a predetermined angle [theta] with respect to the substrate passing direction, and the trimmed resin film is sandwiched and discharged to the outside. Trimming method of resin coating. A pair of discharge belts is disposed downstream of the pair of guide belts mounted between the coater roll and the belt mounting roll, and the relationship between the substrate passing speed V1 and the peripheral speed V3 of the discharge belt is expressed as V1 <. The resin film trimming method according to claim 1, wherein a pulling force is applied to the ear portion as V <b> 3. 5. The discharge belt according to claim 4, wherein the discharge belt is disposed to be inclined at a predetermined angle [theta] with respect to the sheet passing direction of the base material, and the trimmed resin film is sandwiched and discharged to the outside. Trimming method of resin coating. The ears of the resin film are sucked by a blower disposed downstream of the coater roll, tilted by a predetermined angle θ with respect to the board passing direction of the base material, and the ears of the resin film to be trimmed with the base plate passing speed V1 2. The method for trimming a resin film according to claim 1, wherein a separation force is applied to the ear portion so that the relationship with the velocity V4 of the portion is V1 <V4. The ear portion of the resin coating is sandwiched between guide rolls arranged downstream of the coater roll, and is inclined at a predetermined angle θ with respect to the base plate passing direction, so that the base plate passing speed V1 and the guide roll peripheral speed V4 are obtained. The method for trimming a resin film according to claim 1, wherein a relationship of V1 <V4 and a pulling force is applied to the ear portion.

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