JP2013220638A - Apparatus for processing embossed web, method for manufacturing embossed web, and embossed web roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for processing embossed webs which is capable of reducing shifts on an edge of a wound web roll or wrinkles on the edge thereof by always keeping an embossing roll parallel to a contact roll in embossing a web, a manufacturing method thereof, and an embossed web roll manufactured by the manufacturing method.SOLUTION: An apparatus for processing embossed webs exhibits an effect to equalize the heights of convex parts by embossing in which an embossing roll 4 is brought into uniform contact with a contact roll 5 by a pressing means arranged at both edges of the embossing roll 4 or contact roll 5 for transfer onto a web 3, an effect to prevent an edge of a wound web roll from shifting and the wound roll from wrinkling, and an effect to avoid a fault due to the edge of the wound roll which has been raised higher than a central portion thereof. The method for manufacturing the embossed webs and the embossed web roll are disclosed as well.

Description

  The present invention relates to an embossed web processing apparatus, an embossed web manufacturing method using the embossed web processing apparatus, and an embossed web roll, and more particularly, a web formed by winding a uniform convex part height by embossing transferred to the web. The present invention relates to an embossed web processing apparatus, an embossed web manufacturing method, and an embossed web roll that can prevent roll end face deviation and wrinkle generation.

  The embossed web processing apparatus is used for processing various film end portions such as thermoplastic resin films.

  Among thermoplastic resin films, polyester films, especially polyethylene terephthalate films, are excellent in terms of mechanical identification, electrical properties, chemical resistance, dimensional stability, etc., so they are for magnetic tapes, capacitors, packaging materials, It is used as a base material in various fields such as for plate making, for electrical insulation materials, for beverage can lamination, for photographic films, for optics and the like. The thermoplastic resin material is discharged from the die by, for example, a melt extrusion method, and is cooled and solidified by a casting drum or the like. Thereafter, the film is biaxially stretched at an appropriate temperature and stretch ratio, and wound into a roll with a winder. In this post-process, there is a process of winding to the width and length required by the customer, that is, a slit process.

In the winding machine and the slitting process, the wound roll-shaped film end face may be displaced, or the film may be wrinkled, resulting in a winding shape defect. Conventionally, as a countermeasure for these, a method of embossing a film by pressing the end of the film with an embossing web processing device comprising an embossing roll having a large number of protrusions and an abutment roll, and forming a protrusion on the film and winding it up It has been known. (For example, Patent Document 1)
When the web is wound under an appropriate winding condition by the above-described method, air trapped in a roll shape can be appropriately removed, and it is constant for preventing wrinkles and preventing the roll edge from being displaced. There was an effect. However, when embossing the web, in order to make the height distribution of the protrusions uniform, the parallelism between the embossing roll and the abutting roll is adjusted, or the pressure between the embossing roll and the abutting roll is adjusted. It is necessary to increase the height and sandwich the web, or to emboss both in combination, and it has been difficult to stably obtain a sufficient effect. In particular, when the embossing roll and the abutting roll are not kept parallel, the embossing applied to the web is not uniform, the wound roll-shaped end face is displaced, the wound roll is wrinkled, The roll-shaped end portion wound up is higher than the central portion, which deteriorates productivity.

JP 2010-221620 A

  In view of the problems of the prior art, the object of the present invention is to keep the embossing roll and the abutting roll in a parallel state at all times, thereby reducing the deviation of the end face of the wound web roll and the occurrence of wrinkles. In addition to providing an embossing web processing apparatus, the manufacturing method thereof and an embossing web roll manufactured by the manufacturing method are provided.

The present invention employs the following means in order to solve such problems.
1) A web having a pair of a roll mechanism 1 having an embossing roll that has an uneven outer peripheral surface and is rotatably provided, and a roll mechanism 2 that has a contact roll that is in contact with the embossing roll via the web. In the embossing web processing apparatus, the embossing roll and the abutting roll have support means for connecting the bearing portions at both ends of the rotating shaft, and either the roll mechanism 1 or the roll mechanism 2 is provided on the side surface in the roll axial direction. Pressure means on both end faces, and the other support means has pressure means on the center face or both end faces with respect to the side surface in the roll axial direction, and has pressure means on both end faces. The embossing web processing apparatus, wherein the supporting means has a rotatable supporting pin at the center of the supporting means.
2) The supporting means having the pressing means on the both end faces has a strain sensor for detecting a dimensional change as an electric signal, the strain sensor detects the dimensional change on the both end faces, and uses the detected value. The embossing web processing apparatus according to 1), wherein the contact between the embossing roll and the abutting roll is made uniform by adjusting the pressing means on both ends of the roll.
3) The embossing according to 1) or 2), wherein the support means of the roll mechanism 1 has pressure means on both end faces, and the support means of the roll mechanism 2 has pressure means on the center face. Web processing equipment.
4) The embossing web processing apparatus according to any one of 1) to 3), wherein the pressurizing means is a hydraulic cylinder or a pneumatic cylinder.
5) A method for producing an embossed web using the embossed web processing apparatus according to any one of 1) to 4) at at least one end of the web, wherein the embossed surface transferred to the embossed web is embossed A method for producing an embossed web, wherein the area ratio is 5 to 20% with respect to the contact area of the roll.
6) The embossing device according to 5), wherein the embossing web processing apparatus is used at both ends of the web, and the difference in the area ratio of the embossing surface between one end and the other end is 10% or less. Web manufacturing method.
7) An embossed web according to 5) or 6), wherein the web has a thickness of 25 μm to 500 μm, and the web has a length of 100 m to 5,000 m. The embossed web roll is characterized in that the difference between the height of the convex portion formed on the surface of the embossed web roll and the height of the portion without the convex portion is 0.045% or less with respect to the diameter of the embossed web roll.

  According to the embossing web processing apparatus of the present invention, the embossing roll and the contact roll come into uniform contact with each other by the pressurizing means provided on both end faces of the embossing roll or the contact roll. As a result, the height of the convex part by embossing transferred to the web is made uniform, and the roll end surface of the wound web is prevented from shifting, and the wound roll is prevented from wrinkling. Has the effect of Furthermore, it has the effect of preventing defects due to the roll-shaped end portion being wound up being higher than the central portion. According to the method for manufacturing an embossed web of the present invention, it is possible to provide a high-quality web due to these effects, and further improve productivity.

An example of the embossing web processing apparatus of this invention is shown. It is the figure which embossed the web both ends using the embossing web processing apparatus of FIG. It is the figure which wound up the web which embossed the both ends of FIG. 2 in roll shape. It is the figure which showed the area of the convex part which deform | transformed with the embossing web processing apparatus. It is the figure which showed the measuring method of the difference of the embossed web roll convex part height and the height of the part without a convex part.

  According to the embossing web processing apparatus of the present invention, the roll mechanism 1 having the embossing roll 4 having an uneven surface on the outer peripheral surface shown in FIG. 1 and being rotatably provided, and the abutment contacting the embossing roll 4 via the web. In an embossing web processing apparatus for a web 3 having a pair of roll mechanisms 2 having a roll 5 rotatably, the embossing roll 4 and the abutment roll 5 have support means 7 for connecting bearings at both ends of the rotating shaft 6. The support means 7 of either the roll mechanism 1 or the roll mechanism 2 has pressure means 9 at both end faces with respect to the roll axial direction side face, and the other support means is centered with respect to the roll axial direction side face. The supporting means 7 having a pressing means on the surface or both end faces and the pressing means 9 on both end faces is provided with a cylindrical hole in the center of the supporting means 7, and a cylindrical hole is provided in the hole. By inserting the support pin 8 The use of embossing the web processing apparatus, wherein said support means 7 in the direction is rotatable has been found to be effective as a means for solving the above problems.

  In the apparatus of the present invention, the support means 7 of either the roll mechanism 1 or the roll mechanism 2 has the pressurizing means 9 at both end surfaces with respect to the roll axial direction side surface, and the other support means is Although the pressing means is provided on the center surface or both end faces with respect to the roll axial direction side surface, more preferably, the other supporting means is provided with the pressing means on the central surface with respect to the roll axial direction side surface.

  Further, a strain sensor 10 for detecting a dimensional change as an electrical signal is provided on the support means 7 having the pressurizing means 9 on both end faces of the embossed web processing apparatus, and the strain sensor 10 detects a dimensional change on both end faces. Then, the embossing roll 4 is made uniform with the abutting roll 5 in the axial direction by adjusting the pressure means 9 on the both end faces of the roll so that the dimensional change on both end faces of the roll is the same using the detected value. It can be controlled to touch.

  Further, even if an embossing web processing apparatus in which the support means 7 of the roll mechanism 1 has pressurizing means 9 on both end faces and the support means 7 of the roll mechanism 2 has the pressurizing means 9 on the center face is the same. The effect is obtained.

  The embossing roll 4 used in the embossing web processing apparatus withstands contact pressure and heat for forming embossing on the web and withstands long-term use, and metals such as stainless steel and iron, ceramics, and the like are preferable. The contact roll 5 is a metal roll or a metal roll whose surface is rubber-lined. Further, the pressurizing means 9 used in the embossed web processing apparatus may be a hydraulic cylinder or a pneumatic cylinder. However, the hydraulic cylinder may contaminate the embossed web roll 15 when hydraulic oil leaks. Pneumatic cylinders using are more preferred. Moreover, the preferable range of the contact pressure of the embossing roll 4 and the contact roll 5 is 500-3,000N, Preferably it is 800-1,800N, More preferably, it is 1,000-1,200N. . If the contact pressure between the embossing roll 4 and the abutting roll 5 is less than 500N, the pressurization is low, so that the height of the protrusion of the embossing protrusion cannot be obtained sufficiently, and if it exceeds 3,000N, mechanical strength is required. The need to increase the size of the device arises. Further, when the mechanical strength is insufficient, the uniformity of the contact pressure between the embossing roll 4 and the contact roll 5 is impaired due to the deformation of the support means 7.

  The embossed web manufacturing method for embossing the embossed web using the embossed web processing apparatus shown in FIG. 2 on at least one end of the web 3 causes the embossed surface transferred to the web 3 to be a protrusion of the embossed stamped portion 12. A stamped pattern 13 having a shape in which the contact portion is recessed and the other portions become protrusions, and the surface opposite to the embossed surface with which the contact roll 5 is in contact is not deformed and has no unevenness. The height of the convex portion of the imprint pattern 13 of the web 3 shown in FIG. 4 obtained by embossing is defined as the height of the convex portion, the circumferential direction 10 mm of the imprinted portion 12 of the emboss roll 4 and the imprinted portion 12 of the embossed roll 4 When the area ratio of the convex portion deformed with respect to the contact area 17 by the full width in the axial direction is defined as the area ratio, the area ratio of the embossed surface transferred to the embossing web is preferably 5 to 20% with respect to the contact area of the embossing roll. More preferably, it is 5 to 15%. If the area ratio of the embossing by the embossing roll 4 is less than 5%, the pressure applied to one surface of the embossing to be formed becomes large, so that the protrusion is likely to be formed. Since the gap between the webs 3 is wide, the exclusion of the air trapped between the webs 3 when the rolls are wound tends to cause non-uniformity, and disadvantages such as end shifts and wrinkles tend to occur. On the other hand, if the area ratio of embossing by the embossing roll 4 exceeds 20%, the pressure applied to the area of one embossing protrusion to be formed is dispersed and becomes too small, so that the protrusion is difficult to be formed.

  As shown in FIG. 3, the embossed web processing apparatus is used at both ends of the web, and the height of the deformed convex portion of the stamp pattern 13 formed by the embossing roll 4 in the embossed web obtained by the embossed web manufacturing method. Is the height of the convex portion, and the area ratio of the convex portion deformed with respect to the contact area of the circumferential direction 10 mm of the stamped portion 12 of the embossing roll 4 and the total axial width of the stamped portion 12 of the embossed roll is defined as an area ratio. The area ratio is determined for the end of the other, and the ratio of the area ratio of the other end when the area ratio of the one end determined as described above is 1, and the percentage of the absolute value of the difference between the two ends is determined. If the difference between the area ratios at both ends is 10% or less, the end face of the embossed web roll 15 is displaced when the web 3 is wound into a roll, It is greatly reduced that the wrinkle is generated in the Ebb 3. In addition, the difference of the area ratio of both ends is preferably as small as possible, and the lower limit is 0%. It is more preferable that the difference in area ratio between both ends is 5% or less.

  In the embossed web obtained by the embossed web manufacturing method using the embossed web processing apparatus, the web 3 having a thickness of 25 to 500 μm and a length of the web 3 of 100 to 5,000 m was wound up. The embossed web roll 15 has a diameter larger than the portion other than the stamped pattern 13 portion due to the convex portions formed by the stamped pattern 13 at both ends. The difference between the height of the convex portion formed by the marking pattern 13 at both ends of the embossed web roll 15 and the height of the portion without the convex portion formed by the marking pattern 13 is When it is 0.045% or less with respect to the diameter, only the end portion of the embossed web roll 15 does not increase, and the appearance of the embossed web roll 15 taken up becomes good, and the generation of wrinkles on the surface becomes very small. Further, the difference between the height of the convex portion, which is the height of the convex portion formed by the marking pattern 13, and the height of the portion without the convex portion, formed by the marking pattern 13, is on the embossed web roll 15 shown in FIG. A dial gauge 20 is installed on a linear guide 19 of a device composed of a table 18 and a slidable linear guide 19, and the dial gauge 20 is slid in the axial direction of the embossed web roll 15 to form a convex pattern formed by the stamp pattern 13. It is obtained by measuring the difference between the height of the portion and the height of the portion without the convex portion formed by the stamp pattern 13. Here, the preferred thickness of the web 3 that is embossed and wound up in a roll shape is 25 μm to 500 μm, and more preferably 25 μm to 188 μm. When the thickness of the web 3 is 25 μm or less, the effect of preventing winding slippage and wrinkling due to the embossing applied to the web 3 is low, and when the thickness exceeds 500 μm, the rigidity of the web 3 itself causes the effect of the embossing applied to the web 3. The effect of preventing the occurrence of winding slip is low. A preferred length of the web 3 for winding the embossed web 3 into a roll is 100 m to 5,000 m. If the length of the roll wound is less than 100 m, the wrinkles of the web 3 that has started to be wound on the winding core 16 can be confirmed from the surface. The effect is reduced.

  In addition, the web 3 in the present invention is not particularly limited, and typical examples thereof include polyethylene terephthalate, polyethylene-2,6-naphthalate, nylon-6, and polyphenylin sulfide.

  Hereinafter, embodiments of the present invention will be described based on examples, but the present invention is not limited to these embodiments. The conditions and results in each example and comparative example are collectively shown in Table 1. Moreover, the measuring method of each physical property shown in Table 1 and the evaluation method of the effect are as follows.

(A) Convex height 10 points each of the embossed portion and the unembossed portion of the web end using a digital micrometer μ-Mate M-30 manufactured by Sony Precision Technology Co., Ltd. Measurement was averaged, and the difference was defined as the height of the convex portion. Here, the said convex part is a part which the web surface which the embossing protrusion contacted deform | transformed and was dented, and the circumference | surroundings swelled and became a convex part.

(B) All convex portions within the range of the contact area S formed by embossing with respect to the contact area S by the circumferential direction 10 (mm) of the stamped portion 12 of the embossing roll 4 and the axial width of the stamped portion. the area as S _1, dividing the area S ₁ of the convex portion in the contact area S, expressed as a percentage. In addition, when embossing exists in both ends, it is the value of one edge part. The area of the convex portion is obtained by binarization by image processing.
Area ratio (%) = S ₁ / S × 100
(C) The area S _{1 of the} convex portion obtained according to the difference (b) in the area ratios at both ends, and the area S ₂ of the convex portion at the other end were obtained in the same manner, and calculated by the following formula.
Difference in area ratio at both ends (%) = | 1− (S ₂ / S ₁ ) | × 100
(D) (Difference between the height of the convex part and the height of the part without the convex part) / (Web roll diameter)
A dial gauge made by Mitutoyo Co., Ltd. is installed on the linear guide of the device composed of a base and a slidable linear guide on the web roll, and the linear roll is slid in the width direction of the web roll, so that the web roll shaft The maximum difference in dial gauge measurement values from the center of the direction to the end was measured as the difference between the height of the web roll convex portion and the height of the portion without the convex portion. The difference between the height of the web roll convex portion and the height of the portion without the convex portion was divided by the diameter of the web roll and expressed as a percentage.
The web roll diameter was determined by the following method.
Before winding the web into a roll, the length of the web wound was measured with a roller encoder, and the film thickness was measured at the center position in the web width direction and the diameter of the winding core. The diameter was calculated.

(E) Web winding deviation Embossed web roll from the end face of the web meandering when part of the web is shifted more than 2 mm due to the meandering of the web × × greater than 1 mm and 2 mm or less Δ, greater than 0.5 mm 1 mm The following were evaluated as O, and 0.5 mm or less as ◎.

(F) Web wrinkle Embossed web rolls where wrinkles cannot be confirmed ◎, when confirmed only 5 m from the outermost layer, ◯ when confirmed over 10 m from the outermost layer, added to the surface layer portion Even in the middle layer, when the wrinkle was confirmed, it was evaluated as x.

Example 1
Polyethylene terephthalate substantially free of inert particles is dried at a temperature of 160 ° C. for 6 hours under a reduced pressure of 400 Pa, put into an extruder and melted at a temperature of 280 ° C., and then filtered with a filter having a filtration accuracy of 8 μm. It filtered and extruded from the nozzle | cap | die to the sheet form. The extruded sheet was cooled and solidified on a cooling roll having a surface temperature of 20 ° C. by an electrostatic application casting method to obtain a substantially amorphous unstretched film. This unstretched film was stretched 3.1 times at a temperature of 90 ° C. by a longitudinal stretching machine comprising a roll group, and cooled to obtain a uniaxially stretched film. After coating a coating solution having the following composition on both surfaces of this uniaxially stretched film, the film was stretched in the direction of 3.7 times at a temperature of 97 ° C. by a stenter oven. Was heat-treated at a temperature of 228 ° C. for 20 seconds to obtain an intermediate product of a biaxially stretched polyethylene terephthalate film having a thickness of 125 μm and a width of 4200 mm.

  The biaxially stretched polyethylene terephthalate film obtained in this way was measured with a slitter at an unwinding tension of 250 N / m, a winding tension of 240 N / m, a winding surface pressure of 100 N / m, and a slit speed of 100 mm / min. The film was slit into a width, and a biaxially stretched polyethylene terephthalate film having a length of 3,000 m was wound on a cylindrical core having a plastic outer diameter of 167 mm, a thickness of 7.3 mm, and a width of the film width + 20 mm to obtain a film roll. An embossing web processing apparatus for convex formation was installed at a position before slitting between slitting and winding, and a convex shape having a width of 10 mm was formed at both ends in the film width direction before slitting. This embossed web processing apparatus has the structure shown in FIG. 1, but does not have a control device that converts a strain sensor and a signal obtained from the strain sensor into air pressure. The embossing roll 4 and the contact roll 5 of the embossing web processing apparatus sandwiched both ends of the film with a contact pressure of 1,000 N.

A film having an area ratio of 8% formed at both ends of the biaxially stretched polyethylene terephthalate film was obtained. The difference in area ratio between both ends of the formed convex portion was within 10%. However, the ratio of the height difference between the film roll convex portion and the portion without the convex portion to the film roll diameter was 0. It became 046%. Although the film roll was not wrinkled, the end was slightly wound.
[Prescription of coating liquid]
A coating solution was prepared by adding 5 parts by mass of the following melamine-based crosslinking agent liquid and 1 part by mass of colloidal silica particles having an average particle size of 0.1 μm to 100 parts by mass of the following polyester resin emulsion.
[Polyester resin emulsion]
A polyester copolymer emulsion obtained by copolymerizing an acid component and a diol component having the following composition.
<Acid component>
・ Terephthalic acid 50mol%
・ Isophthalic acid 40mol%
・ 10 mol% of 5-sodium sulfoisophthalic acid
<Diol component>
・ Ethylene glycol 96mol%
・ Neopentyl glycol 3 mol%
-Diethylene glycol 1 mol%.

[Melamine crosslinking agent]
A solution obtained by diluting imino group-type methylated melamine with a mixed solvent of isopropyl alcohol and water (10/90 (mass ratio)).

(Example 2)
A film roll of polyethylene terephthalate was obtained in the same manner as in Example 1 using an embossing web processing apparatus having a strain sensor as shown in FIG. 1 and a control device that converts a signal obtained from the strain sensor into pneumatic pressure. . The area ratio formed at both end portions of this biaxially stretched polyethylene terephthalate film was 8%. The difference between the area ratios of both ends of the formed convex portion is within 10%, and the ratio of the height difference between the film roll convex portion and the portion without the convex portion to the film roll diameter is 0.035%. It became. The film roll had good results with no wrinkles and no end rolls.

(Example 3)
The support means 7 of the embossing roll 4 of the roll mechanism 1 of FIG. 1 has a support pin 8 that can be rotated at the center, and pressure means 9 at both end faces. A film roll of polyethylene terephthalate is obtained in the same manner as in Example 1 using a modified embossing web processing apparatus that does not have a rotatable support pin 8 at the center of the support means 7 and has a pressure means 9 at the center. It was. As a result, as shown in Table 1, it was possible to obtain a good film roll in which the film roll was not wound and wrinkles were not generated as in Example 2.

Example 4
A film roll of polyethylene terephthalate was obtained by the same method as in Example 1 using the embossing web processing apparatus shown in FIG. 1 using the embossing roll 4 with an area ratio of 25% with respect to the embossing roll contact area. The area ratio formed at both end portions of this biaxially stretched polyethylene terephthalate film was 25%. The difference between the area ratios at both ends of the formed convex portion is within 10%, and the ratio of the height difference between the film roll convex portion and the portion without the convex portion to the film roll diameter is 0.045%. It became. Although there was no wrinkle generation in the obtained film roll, slight winding deviation was observed at the end.

(Example 5)
Using the same embossing web processing apparatus as in Example 2, a polyethylene terephthalate film roll was obtained in the same manner as in Example 1. However, the signal obtained from the strain sensor 10 was adjusted so that a difference in the convex area between the end portion and the other end portion was intentionally generated. The difference in the area ratios at both ends of the convex portions at the both ends of the obtained film roll was 12%, and the film roll was changed in the direction in which the roll deviation occurred.

(Example 6)
Using the same embossing web processing apparatus as in Example 2, a polyethylene terephthalate film roll was obtained in the same manner as in Example 1. However, the winding length of the film roll was 5500 m. The difference in the area ratio of the both ends of the convex portions of the obtained film roll both ends is the same result as in Example 2, but the difference between the height of the film roll convex portion and the height of the portion without the convex portion and the film roll The ratio of diameters deteriorated.

(Examples 7 and 8)
Using the same embossing web processing apparatus as in Example 2, a polyethylene terephthalate film roll was obtained in the same manner as in Example 1. The obtained film roll was good as shown in Table 1 without the occurrence of winding slip and wrinkles.

(Comparative Example 1)
In the embossing web processing apparatus, unlike FIG. 1, a polyethylene terephthalate is produced in the same manner as in Example 1 using an embossing web processing apparatus that does not have a rotatable support pin 8 on the support means 7 of the abutting roll 5 in the roll mechanism 2. Film roll was obtained. The obtained film roll had the characteristics shown in Table 1. Since the embossing web processing apparatus does not have the rotatable support pin 8 on the support means 7 of the abutting roll 5 of the roll mechanism 2, the embossing roll 4 and the abutting roll 5 do not come into uniform contact with each other. The part was not uniform, and the film roll was wound and wrinkled.

(Comparative Example 2)
In the embossed web processing apparatus, unlike FIG. 1, the support means 7 of the abutting roll 5 of the roll mechanism 2 does not have a rotatable support pin 8 and does not have an adjusting mechanism having one pressurizing means 9 in the center. A polyethylene terephthalate film roll was obtained in the same manner as in Example 1 using a conventional embossed web processing apparatus. The obtained film roll had the characteristics shown in Table 1. An embossing roll for a conventional embossing web processing apparatus that does not have a rotating support pin 8 on the support means 7 of the abutment roll 5 in the roll mechanism 2 and does not have an adjusting mechanism having one pressing means 9 in the center. As a result, the formed convex portions were not uniform, and the film roll was further unwound and wrinkled as compared with Comparative Example 1.

  As described above in detail, the present invention relates to an embossed web processing apparatus for forming embossed strips on the side edge of the web and an embossed web manufacturing method using the embossed web processing apparatus. Uniform embossing with an area ratio difference of 10% or less between the embossed surfaces processed at both ends of the embossed web is obtained, and there is no slippage when the web is wound into a roll. Thus, a high-quality embossed web roll free from defects due to the end portion being higher than the central portion of the roll can be obtained. This embossed web roll is suitable for applications such as optical films, surface protective materials, magnetic recording media, thermal transfer materials, electrical insulating materials, mold release materials, and packaging materials.

1. Roll mechanism 1
2. Roll mechanism 2
3. Web4. 4. Embossing roll Contact roll 6. Rotating shaft7. Support means 8. Support pin 9. Pressurizing means 10. Strain sensor 11. Control device 12. Engraved portion 13. Stamp pattern 14. Direction of web travel 15. Embossed web roll 16. Winding core 17. Contact area 18. Table 19. Linear guide 20. Dial gauge

Claims (7)

Embossed web of a web having a pair of roll mechanism 1 having an embossing roll provided with an unevenness on the outer peripheral surface and rotatably provided, and a roll mechanism 2 having a contact roll contacting the embossing roll via the web. In the processing apparatus, the embossing roll and the abutting roll have support means for connecting the bearing portions at both ends of the rotating shaft, and either the roll mechanism 1 or the roll mechanism 2 supports the roll axial direction side surface. The supporting means has pressure means on both end faces, and the other support means has pressure means on the center face or both end faces with respect to the side surface in the roll axial direction, and has pressure means on both end faces. The embossing web processing apparatus characterized in that the means has a rotatable support pin at the center of the support means. The supporting means having pressurizing means on the both end faces has a strain sensor for detecting a dimensional change as an electrical signal, the strain sensor detects a dimensional change on the both end faces, and rolls using the detected values. The embossing web processing apparatus according to claim 1, wherein contact between the embossing roll and the abutting roll is made uniform by adjusting pressure means on both end faces. The embossed web processing according to claim 1 or 2, wherein the support means of the roll mechanism 1 has pressure means on both end faces, and the support means of the roll mechanism 2 has pressure means on the center face. apparatus. The embossing web processing apparatus according to any one of claims 1 to 3, wherein the pressurizing means is a hydraulic cylinder or a pneumatic cylinder. It is a manufacturing method of the embossing web which uses the embossing web processing apparatus in any one of Claims 1-4 for at least one edge part of a web, Comprising: The embossing surface transcribe | transferred to this embossing web is an embossing roll. A method for producing an embossed web, wherein the area ratio is 5 to 20% with respect to the contact area. 6. The embossed web according to claim 5, wherein the embossed web processing apparatus is used at both ends of the web, and the difference in area ratio between the embossed surfaces of one end and the other end is 10% or less. Manufacturing method. 7. An embossed web obtained by winding up the embossed web obtained by the method for producing an embossed web according to claim 5 or 6 having a web thickness of 25 μm to 500 μm and a length of the web of 100 m to 5,000 m. An embossed web, characterized in that a difference in height between a height of a convex portion formed on the surface of the embossed web roll and a portion having no convex portion is 0.045% or less with respect to the diameter of the embossed web roll. roll.

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