KR102454591B1 - Method for manufacturing single layered body or laminated body - Google Patents

Abstract

The present invention provides a method for manufacturing a monolayer or laminate in which a peeling member used for peeling a separator can be reused in a method for manufacturing a monolayer or laminate comprising peeling off a separator laminated on the laminate. aim to
The above object is a method for producing a monolayer or laminate comprising peeling off a separator laminated on the monolayer or laminate,
(a) bonding a peeling member to the surface on the opposite side to the single-layer body or laminated body side in a separator via an adhesive member;
(b) peeling the separator, the pressure-sensitive adhesive member, and the peeling member together from the monolayer or laminate; and
and (c) isolating the pressure-sensitive adhesive member and the separator from the peeling member peeled in (b) above, and recovering the peeling member.

Description

Method for manufacturing a monolayer or laminate

The present invention relates to a method for producing a monolayer or laminate.

In the manufacturing process of a single|monolayer or laminated body, for example, during lamination of a single|monolayer or laminated body and another member, a separator (release film) is provided on the side of the bonding surface with another member in a monolayer or laminated body. It may be provided. Generally, by providing a separator, a single layer body or a laminated body can be protected, for example, dust adhesion to a single|monolayer body or a laminated body can be prevented.

When laminating a single layer body or a laminate and another member, after peeling a separator from a single layer body or a laminated body, a single layer body or a laminated body proceeds to the lamination|stacking process with another member. In order to efficiently peel the separator from the single layer or laminate, the peeling member is bonded to the surface on the opposite side to the single layer or laminate in the separator so as to cover the separator, and the peeling member and the separator are laminated together to cover the single layer or laminate. Peeling from the sieve is performed.

Hereinafter, for the sake of explanation, a laminate will be described among a single layer body or a layer body, but the same can be described also for a single layer body.

For example, as shown in FIG. 6 , the laminated body 11 and the separator 12 are laminated, and the laminated body in the separator 12 is cut with respect to the laminated body 10 with the separator cut to a predetermined size. The long peeling member 31 sent out from the unwind roll 41 is joined to the surface on the opposite side to (11) using a pair of bonding rolls 43. As shown in FIG. The separator 12 and the peeling member 31 are peeled from the laminated body 11 using a knife edge etc. (not shown), and the separator 12 and the peeling member 31 are peeled by the winding roll 47. wind up At this time, the separator 12 and the peeling member 31 are wound up in the bonded state.

The laminated body 11 which peeled the separator 12 is joined to another member using the additional pair of bonding rolls 48 as needed.

As another method, Patent Document 1 discloses a method of peeling a separator attached to a sheet body.

The peeling method of Patent Document 1 includes a process of aligning and conveying the sheet (laminated body) at a predetermined interval along a predetermined conveying path;

In order to join the sheetfed bodies to be aligned and conveyed, the separator tongue surface of the rear part of the sheetfed body on the front side of the conveying direction and the separator tongue surface of the front part of the sheetfed body on the rear side of the sheetfed body, for peeling The process of affixing an adhesive tape by an affixing means;

A process of peeling the separators connected by the adhesive tape by a peeling means in a state in which they are connected in a long shape

to provide

Patent Document 1: Japanese Patent Laid-Open No. 2007-78978

For example, in the method of bonding a peeling member together and peeling a separator and a peeling member from a laminated body so that the single side|surface of a separator may be covered, the peeling member is used in large quantities. Reuse of a peeling member is calculated|required from a viewpoint of cost and environmental protection.

For example, as shown in FIG. 6, when a separator is peeled from a laminated body, a separator and a peeling member will be collect|recovered in the state in which the separator was joined to the peeling member. For this reason, in order to reuse a peeling member, a peeling member and a separator are wound up, and after that, it is another process WHEREIN: It is necessary to peel a separator from a peeling member.

Generally, the operation|work which peels a separator from a peeling member is performed manually, and operation efficiency is bad. In addition, since it is necessary to rely on the sense of the operator, the time required for peeling varies from operator to operator, and the peeling force is also not constant, so the peeling member is damaged and the peeling member cannot be reused. There are cases.

In this way, in order to peel a separator from a peeling member, there are many subjects, such as a separate process being required, and, without reusing a peeling member, it is discarded in many cases. However, as mentioned above, since the peeling member is comparatively expensive, it is preferable that it can be reused. Moreover, in manufacturing processes, such as a laminated body, it is preferable that waste can be reduced as much as possible.

On the other hand, in the peeling method of Patent Document 1, an attempt is made to peel the separator by affixing the adhesive tape for peeling only to the joint portion of the sheet on which the separator is laminated (for example, claim 1 of Patent Literature 1, paragraph "0008") Reference).

However, in the peeling method of Patent Document 1, the peeling adhesive tape is not pasted on the entire surface of the separator attached to the sheet, but only on a part of the separator. There is a possibility that a local stress may be applied to the sheetfed body. When a local stress is applied, there is a fear that wrinkles, twists, curls, etc. may occur in the sheet.

Moreover, in the peeling method of patent document 1, it is necessary to perform the position alignment of such a laminated body in advance so that sheet-feds cut to a predetermined dimension may become a fixed distance, and a contact or non-contact sensor is required. In addition, according to the size of the sheet cut to a predetermined dimension, it is necessary to adjust the device settings. Therefore, equipment cost and installation space are required.

Moreover, in the peeling method of patent document 1, since it is necessary to cut an adhesive tape to predetermined length, it must set a tape pasting distance according to product size. For this reason, it is unsuitable for production for a small quantity and a variety of products.

Moreover, in recent years, the thickness of the whole laminated body is becoming thin, for example, in an optical laminated body, the thing of 50-300 micrometers in thickness is manufactured. When peeling a separator from a laminated body having such a thickness range, it is necessary to peel the separator without damaging the thin laminated body, so as to maintain the flatness of the laminated body and not to impair the optical properties of the optical laminated body. there is

Moreover, it is preferable that a separator can be continuously peeled from a viewpoint of improving work efficiency.

Therefore, the present invention relates to a method for producing a single layer or a laminate comprising peeling a separator laminated on the laminate, wherein the peeling member used for peeling the separator can be reused. A method for producing a monolayer or laminate intended to provide In addition, there is provided a method for manufacturing a single layer or a laminate that can prevent damage, deformation, wrinkles, and the like of the laminate when peeling the separator from the laminate and maintain the flatness of the laminate. In addition, according to the present invention, the separator and the peeling member can be easily peeled off, and the separator can be continuously peeled off, and the working efficiency is good, and the manufacturing process can be accelerated.

The present invention includes the following.

[1] A method for producing a monolayer or laminate, comprising peeling off a separator laminated on the monolayer or laminate, the method comprising:

(a) bonding a peeling member to the surface on the opposite side to the single-layer body or laminated body side in a separator via an adhesive member;

(b) peeling the separator, the pressure-sensitive adhesive member, and the peeling member together from the monolayer or laminate; and

(c) isolate|separating an adhesive member and a separator from the peeling member peeled in said (b), and collect|recovering a peeling member, The manufacturing method of a single-layer body or laminated body.

[2] The method for producing a monolayer or laminate according to [1], comprising (d) recycling the peeling member recovered in (c) to (a).

[3] The method for producing a monolayer or laminate according to [1] or [2], wherein the adhesive member and the peeling member are a long tape or film.

[4] The method for producing a monolayer or laminate according to any one of [1] to [3], wherein the laminate and the separator are sheets.

[5] The method for producing a monolayer or laminate according to any one of [1] to [4], wherein the adhesive force of the adhesive member on the separator side is greater than the adhesive force on the peeling member side of the adhesive member.

[6] The method for producing a monolayer or laminate according to any one of [1] to [5], wherein the monolayer or laminate is an optical monolayer or optical laminate.

According to the manufacturing method of this invention, the peeling member used for peeling of a separator can be reused. Moreover, according to the manufacturing method of this invention, a separator can be easily and continuously peeled from a laminated body, work efficiency is good and can bring about speedup of a manufacturing process.

BRIEF DESCRIPTION OF THE DRAWINGS It is the whole side view which shows the outline of the manufacturing method of this invention.
It is an enlarged schematic sectional drawing explaining bonding of a peeling member via an adhesion member to the surface on the opposite side to the laminated body side in a separator in the manufacturing method of this invention.
It is an enlarged schematic sectional drawing which shows the state which laminated|stacked the laminated body, the separator, the adhesive member, and the peeling member in the manufacturing method of this invention.
It is an enlarged schematic sectional drawing explaining peeling of a separator, an adhesion member, and a peeling member together from a laminated body in one aspect of the manufacturing method of this invention.
It is an overall side view which shows the outline in one aspect of the manufacturing method of this invention.
It is an overall side view which shows the outline of the conventional manufacturing method.

According to the present invention, there is provided a method for producing a monolayer or laminate comprising peeling off a separator laminated on the monolayer or laminate, comprising:

(a) bonding a peeling member to the surface on the opposite side to the single-layer body side or the laminated body side in a separator via an adhesive member;

(b) peeling the separator, the pressure-sensitive adhesive member, and the peeling member together from the monolayer or laminate; and

(c) isolate|separating an adhesive member and a separator from the peeling member peeled in said (b), and collect|recovering a peeling member, The manufacturing method of a single|monolayer or laminated body is provided.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described. In addition, embodiment of this invention is described using drawings suitably. In this specification, although a laminated body is mainly demonstrated, the same embodiment may be sufficient also about a monolayer body.

(monolayer)

A monolayer is composed of a single layer. In the present invention, the monolayer is not particularly limited.

(laminate)

A laminate will not be specifically limited if it has at least two layers. The same layer may be sufficient as the at least 2 layer, and a different layer may be sufficient as it.

The laminate has, for example, at least one selected from an optical layer, a pressure-sensitive adhesive layer, a protective film layer, a separator, and an additionally peelable protective film.

A long shape may be sufficient as a laminated body, and it may have the shape cut to the predetermined size. In the case of a long laminate, the laminate has, for example, a length from the unwind roll of the laminate to the winding roll of the laminate. The long laminate may have a width in a range of 300 mm to 5000 mm and a thickness in a range of 50 μm to 500 μm. For example, in an optical laminated body, thickness may exist in the range of 50-300 micrometers.

According to the present invention, when a separator is peeled from a laminate having such a thickness range, the flatness of the laminate is maintained and the properties of the optical laminate, such as optical properties, are not impaired, and the thin laminate is broken. The separator can be peeled off without making it.

Meanwhile, the monolayer or laminate cut to a predetermined size may have, for example, dimensions within the range of 300 mm to 3000 mm in length, 300 mm to 1500 mm in width, and 50 μm to 500 μm in thickness. For example, in an optical laminated body, thickness may exist in the range of 50-300 micrometers.

According to the present invention, when a separator is peeled from a laminate having such a thickness range, the flatness of the laminate is maintained and the properties of the optical laminate, such as optical properties, are not impaired, and the thin laminate is broken. The separator can be peeled off without making it.

In addition, according to the manufacturing method of the present invention, even when a laminate cut to a predetermined size is used, the separator can be continuously peeled, so that the working efficiency is good, and the manufacturing process can be accelerated.

According to the manufacturing method of this invention, even if it is a laminated body cut to predetermined dimensions, it is possible to peel a separator continuously without position adjustment. For this reason, what is necessary is just to arrange|position a laminated body, and a complicated process is not required.

Moreover, according to the manufacturing method of this invention, it is not necessary to adjust the setting of the apparatus which peels a separator according to the size of the laminated body cut to predetermined dimensions. For this reason, even if it is a laminated body which has multiple types of sizes, it is possible to continuously peel a separator, and work efficiency can be improved significantly.

Further, according to the manufacturing method of the present invention, for example, the time until the separation of the separator from the laminate cut to a predetermined size and the recovery of the peeling member alone is determined by manually removing the separator and the peeling member, which has been conventionally performed. It is faster than the time in the process of peeling, and can be shortened to about 1/2 - 1/10, for example.

For example, the time until the separation of the separator from the laminate cut to a predetermined size and the collection of the peeling member alone is determined from the time of peeling the separator from the laminate according to the manufacturing method of the present invention, and the separator alone It is obtained by measuring the time until recovery.

In addition, with respect to the time until the separation of the separator from the laminate cut to a predetermined size and the recovery of the peeling member alone, the time required according to the manufacturing method of the present invention and the conventional manufacturing method by manual operation By preparing for the required time, it turns out that, in addition to being able to peel a separator from a laminated body continuously, this invention can shorten time significantly compared with the prior art as mentioned above, for example.

Below, an optical layer is demonstrated as an example of a monolayer or a laminated body. In addition, although a laminated body is demonstrated, the same thing applies also to a monolayer body.

(optical layer)

The optical layer in this invention can be used for a liquid crystal display device etc., and what is necessary is just a layer whose objective is to transmit or reflect and absorb light rays, and to provide various effects.

The optical layer may include, for example, at least one optical film selected from a retardation film, a polarizing film, an antireflection film, a viewing angle improvement film, a brightness enhancement film, and the like. A single layer structure of these optical films may be sufficient as an optical layer, and the multilayer structure which laminated|stacked the some film containing the above optical films may be sufficient as it.

For example, a retardation film is a film which has a predetermined azimuth angle with respect to the absorption axis of a polarizing film, and is mainly used in order to compensate for the coloring by the liquid crystal layer of a liquid crystal display, or in order to compensate for the change of retardation by a viewing angle. Examples of the retardation film include an optical film subjected to processing such as uniaxial or biaxial stretching, or an optical film obtained by applying a liquid crystalline compound to a substrate and processing for orientation and fixation, and these are three-dimensional refractive index The magnitude relationship (refractive index ellipsoid) is controlled according to the conditions of use. Examples of the retardation film are, for example, a λ/2 plate and a λ/4 plate.

The thickness of the retardation film is, for example, 5 µm to 100 µm, and in some embodiments, 5 µm to 30 µm.

Although the retardation film used in the present invention is not particularly limited, as the material of the film as the base material, polyolefins such as polyethylene, polypropylene, and cyclic polyolefin, polycarbonate, polyvinyl alcohol, polystyrene, polymethyl methacrylate, polyarylay polyamide, etc. can be exemplified. Specific examples of the optical film subjected to processing such as stretching include "Pure Ace" (trade name) manufactured by Teijin Corporation, "Elmec" (trade name) manufactured by Kaneka Corporation, "Zeonor" manufactured by Nippon Zeon Corporation. ' (brand name), JSR Corporation "Aton" (brand name), etc. are mentioned. Moreover, as a specific example of the optical film which apply|coated a liquid crystalline compound etc. to the base material and processed orientation and fixation, Fujifilm Co., Ltd. "WV film" (brand name), Shin-Nippon Sekiyu Co., Ltd. make "LC" film", "NH film" (all are brand names), etc. are mentioned.

The retardation film may have a protective film on at least single side|surface.

A certain aspect WHEREIN: The optical layer may have a protective film on at least one surface, such as an optical film. For example, you may have a protective film in the surface on the opposite side to the adhesive layer side in retardation film. In addition, a protective film may be laminated|stacked so that peeling is possible, and may be used, for example, in order to protect an optical film etc. temporarily.

A protective film (it may be called a protective film layer) is generally comprised from the resin film. Examples of the resin film constituting the protective film include cellulose resin films such as triacetyl cellulose (TAC) and cellulose acetate propionate (CAP) films, polynorbornene resin films, polycarbonate resin films, polyester resin films, poly Ethersulfone resin film, polysulfone resin film, polyamide resin film, polyimide resin film, polyolefin resin film, polyarylate resin film, polyvinyl alcohol resin film, polyvinyl chloride resin film, polyvinylidene chloride resin film, etc. can be heard In some aspects, a cellulosic resin film is used.

A certain aspect WHEREIN: The example of the thickness of a protective film is 10 micrometers - 200 micrometers. For example, the polarizer protective film is laminated on at least one side of the polarizer through an adhesive layer.

The polarizing film (sometimes referred to as a polarizer) is a layer that selectively transmits light vibrating in a predetermined direction, is uniaxially stretched, and may be composed of a resin film in which a dichroic dye is adsorbed and oriented in the stretching direction.

As an example of the resin film which can be used as a polarizing film, a polyvinyl alcohol (it may call "PVA" hereafter)-type resin film is mentioned. An example of a PVA-type resin film is a PVA film. Examples of the dichroic dye are iodine and dichroic organic dyes. The example of the thickness of a polarizer is 1 micrometer - 30 micrometers, and in a certain aspect, they are 1 micrometer - 15 micrometers.

A polarizing film may have a protective film in at least one surface. Hereinafter, the laminate of such an aspect may be called a polarizing plate.

For example, the brightness enhancing film is a film having reflective polarization, for example, an optical film that transmits polarized light parallel to the optical axis (transmission axis) and reflects polarized light perpendicular to the optical axis (transmission axis). . As a commercially available brightness enhancing film, DBEF (trademark) manufactured by 3M Corporation and APF manufactured by 3M Corporation are exemplified.

The brightness improving film may be a laminate, for example,

Those laminated in the order of protective film (PE) / base material / protective film (PET),

What was laminated|stacked in order of a separate film (PET) / glue layer / base material / protection film (PET) is mentioned.

The base material in the brightness improving film contains, for example, a polyester-based resin. The thickness of the substrate may be, for example, 10 to 50 μm.

The brightness enhancing film may have various thicknesses depending on the laminate structure and the like, and for example, the total film thickness of the brightness enhancing film may be 30 to 150 µm.

In some embodiments, when the optical laminate has a polarizing film and a brightness enhancing film, the brightness enhancing film may be bonded to the polarizing film so that the optical axis (transmission axis) of the brightness enhancing film and the absorption axis of the polarizing film are orthogonal to each other. have.

(Adhesive layer)

An adhesive layer is used when laminating|stacking a some optical layer, for example.

Examples of the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer include an pressure-sensitive adhesive containing an acrylic polymer, a silicone-based polymer, polyester, polyurethane, polyether, etc. as a base polymer. Among these adhesives, the adhesive which uses an acrylic polymer etc. as a base polymer can be used. This pressure-sensitive adhesive has excellent optical transparency and adhesion, maintains appropriate wettability and/or cohesive force, and has weather resistance and/or heat resistance, etc. does not cause

As the acrylic polymer as the base polymer, an alkyl ester of (meth)acrylic acid having an alkyl group having 20 or less carbon atoms, such as a methyl group, an ethyl group, or a butyl group, and a functional group-containing acrylic monomer composed of (meth)acrylic acid or hydroxyethyl (meth)acrylate An acrylic copolymer having a weight average molecular weight of 100,000 or more is useful, in which the glass transition temperature is preferably 25°C or less, more preferably 0°C or less.

In addition to the base polymer contained in the pressure-sensitive adhesive, a crosslinking agent for crosslinking the base polymer is usually blended. The said crosslinking agent should just be a compound which can bridge|crosslink a base polymer, and is not specifically limited. Moreover, the silane coupling agent may be mix|blended with the adhesive.

The formation method of an adhesive layer is not specifically limited. For example, the pressure-sensitive adhesive layer is prepared by dissolving or dispersing the pressure-sensitive adhesive composition containing the base polymer in an organic solvent such as toluene or ethyl acetate to prepare a solution (or dispersion) in an amount of 10 to 40% by weight based on the entire pressure-sensitive adhesive composition. After coating the said solution (or dispersion liquid) on a transparent resin film, drying and forming an adhesive layer, it can form by transferring this adhesive layer to an optical layer.

In the pressure-sensitive adhesive layer, if necessary, a filler made of an inorganic powder such as glass fiber, glass bead, resin bead, or metal powder, or a pigment, colorant, antioxidant, ultraviolet absorber, or the like may be blended. Examples of the ultraviolet absorber include a salicylic acid ester compound, a benzophenone compound, a benzotriazole compound, a cyanoacrylate compound, and a nickel complex salt compound.

A certain aspect WHEREIN: An active energy ray hardening-type adhesive composition may be sufficient as the adhesive composition which comprises an adhesive layer. The active energy ray-curable pressure-sensitive adhesive composition has a property of being cured by irradiation with active energy rays such as ultraviolet rays or electron beams, and can be adhered to an adherend such as a film with tackiness even before irradiation with active energy rays, so that the active energy ray irradiation It is a pressure-sensitive adhesive composition having a property that can be cured by the adhesion can be adjusted.

The active energy ray-curable pressure-sensitive adhesive composition is, for example, an ultraviolet curable type. In addition to a base polymer and a crosslinking agent, an active energy ray hardening-type adhesive composition contains an active energy ray polymeric compound further. Moreover, a photoinitiator, a photosensitizer, etc. may be made to contain as needed.

The thickness of the pressure-sensitive adhesive layer may be 30 μm or less. For example, 25 μm or less, 20 μm or less in some embodiments, and 15 μm or less in other embodiments. When the thickness of an adhesive layer exists in such a range, favorable workability can be maintained and the dimensional change of an optical layer etc. can be suppressed.

(separator)

According to the manufacturing method of the present invention, it includes peeling a separator laminated on a single layer or a laminate. The lamination mode is not particularly limited, and for example, a single layer or a laminate and a separator may be laminated by electrostatic force, or a separator may be laminated on the monolayer or laminate via an adhesive. In addition, a separator may be called a separator film.

By having a separator, adhesion of a foreign material to a single layer body or a laminated body can be prevented, and the surface can be protected.

In the present invention, the surface on the opposite side to the pressure-sensitive adhesive layer side in the separator may be subjected to a surface modification treatment. The surface modification treatment is, for example, at least one selected from corona treatment, plasma treatment, glow treatment, ozone treatment, and application of an antistatic agent. By performing the surface modification treatment, the adhesion between the peeling member and the separator can be further increased, for example, in the case of peeling the separator, the adhesive member and the peeling member together from a single layer or a laminate, damage to the laminate more effectively; It is possible to prevent deformation, wrinkles, and the like, and maintain the flatness of the laminate.

The separator may be a film or sheet cut to a desired size. When the laminate is a laminate cut to a desired size, the separator may have substantially the same size as the laminate.

The separator cut to a predetermined size may have dimensions within the range of, for example, a length of 300 mm to 3000 mm, a width of 300 mm to 1500 mm, and a thickness of 5 μm to 100 μm. According to the manufacturing method of the present invention, even when a separator cut to a predetermined size is used, the separator can be continuously peeled, so that the working efficiency is good, and the manufacturing process can be accelerated.

Here, when a separator cut to a predetermined size is peeled from a single layer or a laminate, conventionally, the peeling member used for peeling has been discarded after use (disposal cost), and it takes a lot of time and work to reuse it. It is necessary (a discontinuous operation and a separate process are required), and when the peeling member is manually reused, damage to the laminate occurs, and there is a problem that the alignment of the laminate is required for continuous peeling, there was.

On the other hand, according to the manufacturing method of the present invention, even a separator cut to a predetermined size can be peeled at high speed as in the case of peeling a long separator from a single layer or a laminate, and stable peeling can be performed. Moreover, if it is the manufacturing method of this invention, all the said problems can be solved.

Examples of the separator material include cellulose acetate-based resins, cycloolefin-based resins, polyolefin-based resins, acrylic-based resins, polyimide-based resins, polycarbonate-based resins, and polyester-based resins. Examples include polyethylene terephthalate (PET) and polyethylene. Moreover, you may use a commercially available separator.

The thickness of the separator is, for example, in the range of 5 to 100 μm, in some embodiments in the range of 10 to 80 μm, and in another embodiment in the range of 10 to 50 μm. When the thickness of a separator is in such a range, it is excellent in workability, without intensity|strength falling, and it can suppress that the weight of a laminated body becomes heavy.

According to the manufacturing method of the present invention, even if the separator is thin or thick, the separator can be efficiently peeled from the laminate. back can be blocked. Moreover, according to the manufacturing method of this invention, work efficiency is good, such as being able to peel a separator continuously, and it can bring about speedup of a manufacturing process.

(no adhesive)

The manufacturing method of this invention includes bonding a peeling member via an adhesive member to the surface on the opposite side to the single-layer body or laminated body side in a separator.

Moreover, the separator, the adhesive member, and the peeling member can be peeled together from a single|monolayer or a laminated body.

By using the adhesive member in this invention, a peeling member can be easily separated from the state in which the separator, the adhesive member, and the peeling member were laminated|stacked. Therefore, according to the manufacturing method of this invention, after peeling a separator from a laminated body, the peeling member used for peeling of a separator can be collect|recovered independently.

As described above, according to the manufacturing method of the present invention, the separator can be continuously peeled from the monolayer or laminate irrespective of the dimensions and shape of the monolayer or laminate, resulting in good working efficiency and speeding up the manufacturing process. can Moreover, the separator can be easily and quickly separated from the peeling member, and furthermore, damage to the peeling member can be reduced or suppressed. Further, according to the manufacturing method of the present invention, there is no need for alignment of the stacked body, and there is no need to adjust the apparatus according to the difference in the size of the stacked body.

In some embodiments, the adhesive member is an elongate tape or film. When an adhesive member is a long tape or film, the flow rate of the manufacturing process of a laminated body can be raised, and a separator can be peeled more quickly.

In addition, since the pressure-sensitive adhesive member is elongated, for example, between the unwind roll and the winding roll of the pressure-sensitive adhesive member, a predetermined tension can be applied to the pressure-sensitive adhesive member, thereby reducing damage, deformation, and wrinkling of the monolayer or laminate. can be effectively suppressed.

When the adhesive member is a long tape or film, for example, the following effects can be further obtained.

First, it is not necessary to perform positioning so that a laminated body may become a predetermined distance, and the contact and non-contact sensor which grasps the position of a laminated body is not required. Thereby, an installation cost can be suppressed and an installation space can be made smaller.

Next, a mechanism for cutting the adhesive member to a predetermined length is not required. Thereby, an installation cost can be suppressed and an installation space can be made smaller.

In addition, the tape pasting distance may fluctuate with the laminated body size. However, in the manufacturing method of the present invention, since the pressure-sensitive adhesive member is a long tape or film, it is not necessary to change the device settings depending on the product when manufacturing a small amount of a variety of products. Thereby, the fall of a facility operation rate can be suppressed.

In a certain aspect, when the adhesive member is a long tape or film, the long adhesive member has, for example, at least a length from the unwind roll of the adhesive member to the winding roll of the adhesive member.

The long tape may be, for example, 10 to 100 μm thick and 20 to 100 mm wide, and the long film may be, for example, 10 to 100 μm thick and 20 to 100 mm wide.

The width of the adhesive member may be substantially the same as the width of the separator, for example, within the range of 20 mm to 100 mm. By having a width within such a range, when isolate|separating an adhesive member and a separator from a peeling member, and collect|recovering a peeling member WHEREIN: A peeling member and an adhesive member can be easily separated.

In some embodiments, the width of the pressure-sensitive adhesive member may be in the range of 20 mm to 100 mm. In such an aspect, for example, at least two adhesive members can be arrange|positioned at arbitrary positions between a separator and a peeling member.

For example, when using two adhesive members, you may arrange|position one adhesive member along one side of the elongate direction in a separator. You may arrange|position another adhesive member along the other side of the elongate direction in a separator.

By having a width within such a range, compared with the case where the width|variety of an adhesive member and the width|variety of a separator are the same or substantially the same, the usage-amount of an adhesive member can be reduced.

Moreover, when collect|recovering a peeling member WHEREIN: A peeling member and an adhesive member can be isolate|separated more easily.

For example, according to conditions, such as the width|variety of the adhesive member used, adhesive force, the number of the adhesive members arrange|positioned between a separator and a peeling member can be adjusted suitably, and an arrangement|positioning place can also be selected suitably.

In a certain aspect, the adhesive member has a thickness in the range of 10 micrometers - 100 micrometers in thickness. According to the manufacturing method of the present invention, even when a separator cut to a predetermined size is used, the separator can be continuously peeled, so that the working efficiency is good, and the manufacturing process can be accelerated.

The adhesive member has adhesive force on at least one surface. In a certain aspect, it has adhesive force on the separator side in an adhesion member, in another aspect, it has adhesive force on the separator side in an adhesion member, and has adhesive force on the peeling member side in an adhesion member.

Here, the adhesive force of an adhesive member can be set suitably according to the layer structure of a laminated body. In a certain aspect, when a pressure-sensitive adhesive layer is provided between the laminate and the separator and the laminate and the separator are laminated through the pressure-sensitive adhesive layer, the adhesive force of the pressure-sensitive adhesive member present between the separator and the peeling member, for example, in the pressure-sensitive adhesive member The adhesive force on the side of the separator of may be larger than the adhesive force in the adhesive layer which exists between a laminated body and a separator, and may be substantially the same.

By having such a relationship, it can suppress that peeling arises between an adhesion member and a separator, and can collect|recover a peeling member more effectively in a reusable state.

In a certain aspect, the adhesive force on the side of the separator in an adhesive member has the relationship that it is larger than the adhesive force in the adhesive layer which exists between a laminated body and a separator. By having such a relationship, a separator can be stably peeled from a laminated body etc. On the other hand, in a certain aspect, the adhesive layer which exists between a laminated body and a separator remains in a laminated body, and can use it for lamination|stacking with another member in a following process.

Here, in this invention, the measurement of adhesive force was performed by the Toyoseki Seisakusho universal material testing machine strograph (model: EII-L05) according to JISC2107.

In a certain aspect, when an adhesive layer is provided between the laminate and the separator and the laminate and the separator are laminated through the adhesive layer, the adhesive force of the adhesive layer present between the laminate and the separator, and the pressure-sensitive adhesive member The relationship between the adhesive force on the side of the separator and the adhesive force on the peeling member side of the adhesive member in

The adhesive force on the side of the separator in an adhesive member>Adhesive force in the peeling member side of an adhesive member>Adhesive force of the adhesive layer which exists between a laminated body and a separator

It is preferable that the relationship of

By having such a relationship, peeling together a separator, an adhesive member, and a peeling member from a laminated body can be performed more easily. Moreover, it is also possible to isolate|separate an adhesive member and a separator from a peeling member more efficiently.

In a certain aspect, the adhesive force in the separator side of an adhesive member is larger than the adhesive force in the peeling member side of the said adhesive member. By having such a relationship, peeling of a separator, an adhesion member, and a peeling member together can be performed more easily. Moreover, it can also perform further efficiently to isolate|separate an adhesion member and a separator from the peeling member performed after that.

In a certain aspect, the adhesive force on the separator side of an adhesive member is 0.5-8.0 N/25 mm, for example, in another aspect, it is 0.5-6.0 N/25 mm, for example, it is 0.5-4.0 N/25 mm. .

When the adhesive force in the separator side of an adhesive member exists in such a range, it can perform peeling together a separator, an adhesive member, and a peeling member from a laminated body more easily. Moreover, it is possible to easily separate the pressure-sensitive adhesive member and the separator from the peeling member, and the effect that the peeling member is less prone to damage such as folds and wrinkles can be obtained.

In a certain aspect, the adhesive force on the peeling member side of an adhesive member is 0.01-0.1 N/25 mm, in another aspect, for example, it is 0.01-0.08 N/25 mm, for example, it is 0.01-0.05 N/25 mm. .

When the adhesive force in the peeling member side of an adhesive member is in such a range, for example, isolate|separating an adhesive member and a separator from the peeling member used for peeling of a separator can be performed more efficiently.

In addition, since the occurrence of breakage and contamination on the peeling member can be reduced or suppressed when the adhesive member and the separator are separated from the peeling member, the peeling member can be recovered without impairing the function of the peeling member. Moreover, as long as it has the function of a peeling member, the collect|recovered peeling member can be reused multiple times.

In a certain aspect, as mentioned above, the adhesive force in the separator side of an adhesive member is larger than the adhesive force in the peeling member side of the said adhesive member. In this case, for example, the adhesive force in the separator side of an adhesive member and the adhesive force in the peeling member side of an adhesive member employ|adopt the value which exists in the range described in this specification.

For example, the adhesive force on the separator side of the adhesive member is 0.5 to 8.0 N/25 mm, the adhesive force on the peeling member side of the adhesive member is 0.01 to 0.1 N/25 mm, and in the separator side of the adhesive member The case where the adhesive force of is larger than the adhesive force in the peeling member side of the said adhesive member is mentioned.

In this specification, adhesive force means the adhesive force per each adhesive member also in the aspect using a some adhesive member.

In the case of using a plurality of adhesive members, the adhesive force of each adhesive member may be changed according to the aspect to be used, for example, a plurality of adhesive members having adhesive strength within the above range and different adhesive strength may be used in combination.

The structure of the adhesive member is not particularly limited. For example, the pressure-sensitive adhesive member may have a pressure-sensitive adhesive or adhesive on at least one side of any resin substrate. A certain aspect WHEREIN: Cellulose resin, cycloolefin resin, polyolefin resin, acrylic resin, polyimide resin, polycarbonate resin, polyester resin, etc. are mentioned as a resin base material. Examples include polyethylene terephthalate (PET) and polyethylene.

Moreover, an adhesive or an adhesive agent is not specifically limited, either. For example, the pressure-sensitive adhesive used for the above-described pressure-sensitive adhesive layer may be used, or the pressure-sensitive adhesive layer may be formed of a composition containing an adhesive material such as an acrylic pressure-sensitive adhesive, a silicone pressure-sensitive adhesive, a urethane pressure-sensitive adhesive, and natural rubber.

(no peeling)

The manufacturing method of this invention includes bonding a peeling member via an adhesive member to the surface on the opposite side to the single-layer body or laminated body side in a separator.

By using a peeling member, a separator can be easily peeled from a laminated body.

ADVANTAGE OF THE INVENTION According to the manufacturing method of this invention, in the state in which a separator, an adhesive member, and a peeling member are laminated|stacked, a separator and an adhesive member can be easily separated from a peeling member. Moreover, after peeling a separator from a laminated body, the peeling member used for peeling of a separator can be collect|recovered.

Moreover, according to the manufacturing method of this invention, a peeling member can be collect|recovered without damage, contamination, etc. of a peeling member occurring, and without impairing the function which the peeling member has. Therefore, the peeling member can be reused multiple times.

In some embodiments, the release member is an elongate tape or film. A tape having an elongated release member may have dimensions of, for example, a thickness of 10 to 200 μm and a width of 300 to 1500 mm.

A film in which the release member is elongated may have dimensions of, for example, a thickness of 10 to 200 μm and a width of 300 to 1500 mm.

When a peeling member is a long tape or film, the flow rate in the manufacturing process of a laminated body can be raised, a separator can be peeled more quickly, and a separator can be peeled continuously.

Moreover, when a peeling member is elongate, the flatness of a laminated body can be maintained.

For example, when a single-layer body or a laminated body is cut to a predetermined dimension, since the peeling member is elongate, it can convey in the state which flattened the single|monolayer body or laminated body. By planarizing the laminate and the separator, damage to the laminate, deformation, generation of wrinkles, and the like can be more effectively suppressed.

For example, when the peeling member is long, a predetermined tension can be applied to the peeling member between the unwind roll of the peeling member and the take-up roll, so that damage, deformation, generation of wrinkles, etc. of the laminate can be more effectively suppressed. can

In some aspects, when the release member is an elongate tape or film, the elongate release member has, for example, at least a length from the unwind roll of the release member to the take-up roll of the release member. For example, it has a length of 50 to 2000 m.

The width of the peeling member may be narrower than the width of the separator, may be substantially the same, or may be wider than the width of the separator. For example, it exists in the range of 300-1500 mm, and in another aspect, you may exist in the range of 300-1300 mm.

In a certain aspect, compared with the width|variety of a separator, the width|variety of a peeling member may be substantially the same, or may be wider than the width|variety of a separator. For example, it exists in the range of 300-1500 mm, and in another aspect, it exists in the range of 300-1300 mm.

When the width of the peeling member falls within such a range, it is possible to convey the single layer or laminate and the separator in a planarized state. In addition, by planarizing the monolayer or laminate and the separator, damage, deformation, generation of wrinkles, and the like of the monolayer or laminate can be more effectively suppressed.

In a certain aspect, the thickness of a peeling member exists in the range of 10-200 micrometers. According to the manufacturing method of the present invention, even when a separator cut to a predetermined size is used, the separator can be continuously peeled, so that the working efficiency is good, and the manufacturing process can be accelerated.

In a certain aspect, the peeling member is substantially the same as the dimension of a separator, or is larger than the dimension of a separator.

The peeling member may have adhesive force on at least one surface. In a certain aspect, it has adhesive force on the surface by the side of the separator of a peeling member.

Here, the adhesive force of a peeling member can be suitably adjusted according to the dimension of the separator peeling from a laminated body, various adhesive force, a peeling speed, etc.

In a certain aspect, the adhesive force on the separator side of a peeling member is 0.01-0.3 N/25 mm, for example, in another aspect, it is 0.01-0.2 N/25 mm, for example, it is 0.01-0.1 N/25 mm.

When the adhesive force in the separator side of a peeling member exists in such a range, peeling a separator from a laminated body can be performed more easily. Moreover, since it can suppress that a separator and a peeling member separate when peeling a separator from a laminated body, a separator can be peeled stably from a laminated body.

According to the manufacturing method of this invention, a peeling member can be reused multiple times. As a criterion of reuse, when the adhesive force in the separator side of a peeling member is in the said range, for example, it can be reused. According to the manufacturing method of the present invention, the peeling member can be reused as long as there is no major breakage, curl, or the like in the peeling member.

Thus, according to the manufacturing method of this invention, it can collect|recover without causing major damage, adhesion unevenness, curl, etc. to a peeling member.

Moreover, if it is the manufacturing method of this invention, collection|recovery of a peeling member can be made easy, and it can carry out quickly. In addition, damage or the like of the peeling member can be greatly reduced or suppressed. Since the peeling member can be effectively reused, the consumption amount of the peeling member can be greatly reduced, and the disposal of the peeling member can be greatly reduced.

The structure of the peeling member is not specifically limited. For example, the peeling member may have a pressure-sensitive adhesive or an adhesive on at least one side of any of the resin substrates. A certain aspect WHEREIN: Cellulose resin, cycloolefin resin, polyolefin resin, acrylic resin, polyimide resin, polycarbonate resin, polyester resin, etc. are mentioned as a resin base material. Examples include polyethylene terephthalate (PET) and polyethylene. Moreover, an adhesive or an adhesive agent is not specifically limited, either. For example, you may use the adhesive used for the adhesive layer mentioned above.

<Method for Producing Optical Monolayer or Laminate>

Hereinafter, although the manufacturing method in this invention is suitably demonstrated using drawings, this invention is not limited to these aspects.

The manufacturing method of the present invention includes peeling a separator laminated on a single layer or a laminate,

(a) bonding a peeling member to the surface on the opposite side to the single-layer body or laminated body side in a separator via an adhesive member;

(b) peeling the separator, the pressure-sensitive adhesive member, and the peeling member together from the monolayer or laminate; and

(c) isolate|separates an adhesive member and a separator from the peeling member peeled in said (b), and collect|recovers a peeling member.

According to the manufacturing method of this invention, the peeling member used for peeling of a separator can be reused. In addition, according to the manufacturing method of the present invention, the separator can be continuously peeled off, the working efficiency is good, and the manufacturing process can be accelerated.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, although the manufacturing example of a laminated body is demonstrated below, a monolayer can also be demonstrated similarly.

For example, Fig. 1 is an overall side view showing the outline of the manufacturing method of the present invention. In more detail, FIG. 1 illustrates a method of manufacturing a laminate using a laminate cut to a predetermined size.

In FIG. 1 , a laminated body 10 having a separator includes a laminated body 11 cut to a predetermined size and a separator 12 . The laminated body 10 having a separator is conveyed, for example, on a belt conveyor (not shown) from the left direction in FIG. 1 . The elongate adhesive member 21 sent out from the unwind roll 42 of the adhesive member, and the elongate peeling member 31 sent out from the unwind roll 41 of the peeling member, in the separator 12 It is joined to the surface on the opposite side to the laminated body 11 side of. In addition, the position, size, etc. of the various rolls in a figure are an example. Depending on the usage mode, for example, the presence or absence of an adhesive, conditions such as the position size of the roll may be appropriately changed, and additional rolls may be added as desired.

Bonding may be performed, for example as shown in the broken line A of FIG. 1, for example, using a pair of bonding rolls 43, you may join these.

The separator 12 , the adhesive member 21 , and the peeling member 31 can be laminated in any order as long as they are arranged in this order. For example, the adhesive member 21 and the peeling member 31 are laminated first, and the peeling member 31 is passed through the adhesive member 21 on the surface on the opposite side to the laminated body 11 side in the separator 12 . may be joined.

In a certain aspect, for example, the adhesive member 21 may be laminated on the surface opposite to the laminate 11 side of the separator 12, and the peeling member 31 may be successively laminated, In an aspect, the separator 12, the adhesive member 21, and the peeling member 31 may be laminated|stacked on the laminated body 11 simultaneously.

In a certain embodiment, the manufacturing method of this invention can manufacture a monolayer or laminated body as follows.

For example, in Fig. 1 , a laminate 10 cut to a predetermined size in which a separator 12 is laminated on a laminate 11 is cut so that the separator 12 side is in contact with a belt conveyor surface (not shown). It arrange|positions and conveys the laminated body 10 cut to the predetermined dimension continuously in the flow direction. Then, the peeling member 31 is joined to the surface on the opposite side to the laminated body 11 in the separator 12 via the adhesive member 21. As shown in FIG. Then, using a knife edge (not shown), the separator 12, the adhesive member 21, and the peeling member 31 are peeled from the laminated body 11 in the bonded state together.

Then, the adhesive member 21 and the separator 12 are isolate|separated from the peeling member 31 peeled in the said process, and the peeling member 31 is collect|recovered. In the present invention, these steps can be performed continuously.

According to the manufacturing method of this invention, when the laminated body which peeled the separator is collect|recovered and the state of a laminated body is observed, abnormalities, such as a breakage, a wrinkle, and distortion, do not arise in a laminated body. Therefore, it is estimated that the laminated body was conveyed in a flat state.

FIG. 2 is an enlarged schematic cross-sectional view illustrating bonding of the peeling member 31 to the surface of the separator 12 on the opposite side to the laminate 11 side via the adhesive member 21 .

As can be understood from Figs. 1 and 2, according to the manufacturing method of the present invention, for example, the elongate adhesive member 21 and the peeling member 31 can be continuously sent out, so that it is faster and more stable. Thus, the peeling member 31 can be bonded to the surface of the separator 12 on the opposite side to the laminate 11 side via the adhesive member 21 .

In addition, by using the elongate adhesive member 21 and/or the peeling member 31, it is possible to efficiently and efficiently The separator can be continuously peeled off, and the occurrence of damage, deformation, wrinkles, curls, and the like of the laminate can be reduced.

In addition, the space|interval of the laminated body cut to the predetermined dimension in each figure is only one aspect.

In addition, although not shown in FIG. 1 etc., in the said technical field, well-known guide roll etc. can be arrange|positioned suitably.

3 : is an enlarged cross-sectional schematic diagram which shows the relationship between the laminated body 11, the separator 12, the adhesive member 21, and the peeling member 31, as shown by the broken line B in FIG.

For example, by selecting the dimensions of the peeling member 31, such as making the peeling member 31 long or selecting an appropriate width, the laminate 11 and the separator 12 are separated without using a belt conveyor or the like. The adhesive member 21 and the peeling member 31 can be conveyed in a flat state. Also, the thin laminate 11 and the laminate 11 cut to a predetermined size can be flattened, and damage, deformation, wrinkles, curls, and the like of the laminate can be suppressed.

Fig. 4 is an enlarged cross-sectional schematic view showing that the separator 12, the adhesive member 21, and the peeling member 31 are peeled together from the laminate 11, as shown by the broken line C in Fig. 1 . . For example, peeling the separator 12 etc. from the laminated body 11 can be performed by inverting and conveying the separator 12 using a knife edge etc. (not shown).

According to the manufacturing method of this invention, the separator 12, the adhesive member 21, and the peeling member 31 are peeled together from the laminated body 11. As shown in FIG. According to the manufacturing method of this invention, the separator 12, the adhesive member 21, and the peeling member 31 can be peeled together without causing damage, cracks, wrinkles, etc. in a laminated body. Moreover, the separator 12 can be continuously peeled from the laminated body 11, and these peeling can be performed stably at high speed.

In a certain aspect, after peeling a separator, you may bond with another functional layer. Other functional layers can be suitably selected according to the use used by a laminated body, For example, a brightness improving film, retardation plate, etc. are mentioned. In addition, a long sheet or film may be sufficient as another functional layer, and the functional layer of the dimension substantially the same as the dimension of a laminated body may be sufficient as it.

For example, when the other functional layer is a long sheet or film, after peeling the separator, the laminate and the functional layer are laminated, the laminate and the functional layer are passed between the pair of bonding rolls, and the laminate is pressed by pressing. and functional layers can be bonded.

On the other hand, the separator 12, the adhesive member 21, and the peeling member 31 peeled from the laminated body 11 are conveyed in the state laminated|stacked together. Thereafter, the adhesive member 21 and the separator 12 are separated from the peeling member 31 using a knife edge or the like, and the peeling member 31 is removed by the winding roll 45 as shown in FIG. 1 . recover using According to the manufacturing method of this invention, the peeling member 31 can be collect|recovered without damage, such as a breakage, a wrinkle, and distortion, occurring. Moreover, the peeling member 31 can be collect|recovered continuously and at high speed. Moreover, since it can collect|recover without impairing the function of the peeling member 31 by using the manufacturing method of this invention, the collect|recovered peeling member 31 can be reused.

In a certain aspect, in (a) bonding the peeling member through the adhesive member to the surface on the opposite side to the laminated body side in a separator, the recovered|recovered peeling member 31 is recycled, and (a) process You may use it as a peeling member in this.

Thus, according to the manufacturing method of this invention, the consumption amount of a peeling member can be reduced significantly, and, further, the disposal of a peeling member can be reduced greatly.

As shown in FIG. 1 , the separator 12 and the adhesive member 21 are collected using, for example, a winding roll 44 . In a certain aspect, the recovered separator 12 and the adhesive member 21 may be further separated into the separator 12 and the adhesive member 21 and recovered.

A certain aspect WHEREIN: The peeling member 31 which has an adhesive surface may coat|cover the adhesive surface with the separator 32 for peeling members until use. 5 : is the whole side view which shows the outline of the manufacturing method of this invention using the separator 32 for peeling members.

For example, as shown in FIG. 5, the peeling member 31 is sent out from the unwind roll 41, and the adhesive member 21 is on the surface on the opposite side to the laminated body 11 side in the separator 12. You may peel the separator 32 for peeling members from the peeling member 31 at an arbitrary stage up to (a) bonding the peeling member 31 via.

In a certain aspect, the separator 12, the adhesive member 21, and the peeling member 31 are separated from the laminated body 11, and the adhesive member 21 and the separator 12 are separated from the peeling member 31. After carrying out, you may coat|cover the adhesive surface side of the peeling member 31 with the separator 32 for peeling members.

For example, as shown in FIG. 5, the separator 12, the adhesive member 21, and the peeling member 31 are peeled together from the laminated body 11 (b), and the peeling member 31 peeled in (b) above. ) from ), after separating the adhesive member 21 and the separator 12, at any stage until the peeling member 31 is recovered using the take-up roll 45, for example, a pair of nip rolls 49 Through this, the adhesive surface side of the peeling member 31 may be coat|covered with the separator 32 for peeling members.

In a certain aspect, as shown in FIG. 5, from the unwind roll 41 side of the peeling member 31 toward the winding-up roll 45 side of the peeling member 31, the separator 32 for peeling members It may be circulated. In addition, arrangement|positioning of the guide roll shown in FIG. 5 is one aspect|mode, and can arrange|position suitably.

According to the present invention, since the separator 12 and the peeling member 31 can be continuously separated, the separator 32 for the peeling member can also be circulated in the manufacturing process of a single layer or a laminate. Therefore, according to the manufacturing method of this invention, the disposal of the separator for peeling members can also be reduced significantly, and also, after collection|recovery of the peeling member 31, the adhesive surface of the peeling member 31 can be quickly replaced with the separator for peeling members. Since it can coat|cover with the peeling member, reuse of the peeling member becomes easy, and it became possible to extend the lifetime of a peeling member.

Therefore, according to one aspect of the present invention, the pressure-sensitive adhesive surface of the peeling member 31 is recovered while maintaining its function.

<Method for Producing Optical Monolayer or Laminate>

As long as it is the manufacturing method of this invention, as a monolayer or a laminated body, you may use an optical monolayer or an optical laminated body. For example, even with an optical laminate having a thickness of 50 to 300 µm, when a separator is peeled from the optical laminate, damage to the optical laminate, deformation, generation of wrinkles, etc. can be prevented, and the optical laminate can maintain the flatness of the optical laminate. A method of making a laminate is provided. As for the optical monolayer, even if it is a thinner optical monolayer having a thickness of 5 to 100 µm, according to the manufacturing method of the present invention, damage, deformation, generation of wrinkles, etc. of the optical monolayer can be prevented, and the flatness can be maintained.

In addition, the present invention has good working efficiency, such as continuously peeling the separator, and can bring about speeding up of the manufacturing process.

Moreover, if it is the manufacturing method of this invention, the peeling member used for peeling of a separator can be reused.

ADVANTAGE OF THE INVENTION According to this invention, in the manufacturing method of a single-layer body or laminated body including peeling the separator laminated|stacked on a monolayer body or a laminated body, the peeling member used for peeling of a separator can be reused. Moreover, when peeling a separator from a laminated body, damage to a laminated body, deformation|transformation, generation|occurrence|production of wrinkles, etc. can be prevented, and the flatness of a laminated body can be maintained.

In addition, the present invention has good working efficiency, such as continuously peeling the separator, and can bring about speeding up of the manufacturing process.

ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of a single-layer body or a laminated body in which the peeling member used for peeling of a separator can be reused is provided.

10 Laminate with Separators
11 Laminate
12 separator
21 Adhesive member
31 peel member
32 Separator for peeling member
41 Unwind roll of peel member
42 Unwind roll of adhesive member
43 bonding roll
44 Adhesive member and separator winding roll
45 Winding roll of peeling member
49 nip roll

Claims (6)

A method for producing a monolayer or laminate comprising peeling off a separator laminated on the monolayer or laminate, the method comprising:
(a) bonding a peeling member to the surface on the opposite side to the single-layer body or laminated body side in a separator via an adhesive member;
(b) peeling the separator, the pressure-sensitive adhesive member, and the peeling member together from the monolayer or laminate; and
(c) separating the adhesive member and the separator from the peeling member peeled in (b) above, and recovering the peeling member;
The adhesive member and the peeling member are a long tape or film,
The adhesive force in the separator side of the said adhesive member is larger than the adhesive force in the peeling member side of the said adhesive member,
A method for producing a monolayer or laminate. The method for producing a monolayer or laminate according to claim 1, comprising (d) recycling the peeling member recovered in (c) to (a). delete The method for producing a monolayer or laminate according to claim 1 or 2, wherein the monolayer or laminate and the separator are sheets. delete The method for producing a monolayer or laminate according to claim 1 or 2, wherein the monolayer or laminate is an optical monolayer or optical laminate.

Images