KR20170084518A - Method for preparing soft feel type self-healing film and soft feel type self-healing film - Google Patents

Method for preparing soft feel type self-healing film and soft feel type self-healing film Download PDF

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Publication number
KR20170084518A
KR20170084518A KR1020160003635A KR20160003635A KR20170084518A KR 20170084518 A KR20170084518 A KR 20170084518A KR 1020160003635 A KR1020160003635 A KR 1020160003635A KR 20160003635 A KR20160003635 A KR 20160003635A KR 20170084518 A KR20170084518 A KR 20170084518A
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self
layer
film
restoring
soft
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KR1020160003635A
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Korean (ko)
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KR101793083B1 (en
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정충식
주진만
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주식회사 퍼시픽에프엔씨
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B2038/0052—Other operations not otherwise provided for
    • B32B2038/0076—Curing, vulcanising, cross-linking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/584—Scratch resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/762—Self-repairing, self-healing

Abstract

The present invention relates to a method of manufacturing a soft-type self-restoring film and a method of manufacturing a soft-type self-restoring film according to an embodiment of the present invention. The method includes the steps of forming a primer layer on a base film step; Applying a self-restoring composition on the primer layer to form a self-restoring layer; Positioning the matte silicone release layer / protective layer composite film on the self-restoring layer before the self-healing composition is cured; And curing the self-recovering layer.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for manufacturing a soft-type self-restoring film, and a soft-type self-

The present invention relates to a method for producing a soft-type self-restoring film and a soft-film type self-restoring film.

Generally, when the glass substrate is directly exposed to the outside, the external surface of the electronic device such as a mobile phone, a PDA, a smart phone, a navigation, a digital camera, an exterior of a general household appliance, There is a possibility that wear and scratches may be caused by the protective film, and a protective film is attached to protect the outer surface from external stimuli. In addition, the design of the exterior is realized by using the film which is coated and designed and printed for various colors of the exterior and design of the exterior. Generally, the film for this purpose uses a transparent synthetic resin. However, in recent years, there have been a lot of attempts to use emotional superior film materials only for simple wear and scratch protection purposes. Typically, films made of urethane resin, soft feel film, leather film, and soft film or silk touch are added to the surface. have. However, although these films can be expressed emotionally, they are difficult to apply to the exterior of electronic devices, the exterior of home appliances, automobiles, furniture, and industrial surfaces due to the problems of wear resistance and scratch resistance which are originally intended for exterior protection, .

SUMMARY OF THE INVENTION The present invention has been made to solve the problems described above, and it is an object of the present invention to provide a method for manufacturing a self-restoring resin, which is capable of protecting from wear and scratches caused by external stimuli, feel characteristic, it can be applied as a material that is excellent in emotion. It can improve PC, touch panel anti-blocking property, slippery property, prevent scratch that may occur during the process, A method of manufacturing a restorative film, and a soft-film type self-restorative film.

However, the problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to a first aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: forming a primer layer on a base film; Applying a self-restoring composition on the primer layer to form a self-restoring layer; Positioning the matte silicone release layer / protective layer composite film on the self-restoring layer before the self-healing composition is cured; And a step of curing the self-restoring layer.

The step of curing the self-restoring layer may be such that fine unevenness is formed between the self-recovering layer and the silicon release layer of the matte release layer / protective layer laminate film according to the curing of the self-restoration layer.

According to a second aspect of the present invention, there is provided a semiconductor device comprising: a base film; A primer layer formed on the base film; A self-restoring layer formed on the primer layer; And a matte silicon release layer / protective layer laminated film formed on the self-recovering layer, wherein an arithmetic mean roughness (Ra) between the self-recovering layer and the silicon release layer of the matte release layer / Wherein the fine irregularities include fine irregularities having a diameter of 1 to 10 mu m.

Wherein the self-recovering layer comprises silicon, acrylic and urethane, wherein the silicon is between 2 wt% and 10 wt%, the acrylic is between 70 wt% and 82 wt%, the urethane is 10 wt% % To 30% by weight, and the thickness of the self-recovering layer may be 10 [mu] m to 60 [mu] m.

Wherein the base film is at least one selected from the group consisting of polycarbonate, polyester carbonate, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyvinyl chloride, poly (meth) acrylate, polyvinyl alcohol, polyphenylene ether, A polyether sulfone, a polyether sulfone, a polyether sulfone, a polyether sulfone, a polysulfone, a polyethylene, a polymethylpentene, a polyetherketone, a polyetheretherketone, a polyether sulfone, a polymethyl methacrylate, a poly At least one selected from the group consisting of urethane, diacetyl cellulose, triacetyl cellulose, acetyl cellulose butyrate, isobutyl ester cellulose, ethylene-vinyl acetate copolymer, propionyl cellulose, butyryl cellulose and acetyl propionyl cellulose Wherein the base film has a thickness of 30 탆 to 500 탆, the primer layer includes a urethane primer, and the thickness of the primer layer is 0.5 탆 to 10 탆.

The method for producing a soft-type self-restoring film and the soft-type self-restoring film according to an embodiment of the present invention can form fine irregularities through a simple manufacturing process without separately forming particles in the film, And when the external force is applied to the self-restoring film and physical damage such as scratches is generated, the original state can be restored while the scratches are naturally self-removed by the self-restoring layer.

FIG. 1 is a flowchart illustrating a process of manufacturing a soft-type self-restoring film according to an embodiment of the present invention.
2 to 5 are views showing a manufacturing process of a soft-type self-restoring film according to an embodiment of the present invention.
6 is a cross-sectional view showing a soft-type self-restoring film according to an embodiment of the present invention.
7 is an enlarged view of a portion A in Fig. 6
8 is a cross-sectional view showing a soft-type self-restoring film according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, terms used in this specification are terms used to appropriately express the preferred embodiments of the present invention, which may vary depending on the user, the intention of the operator, or the practice of the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification. Like reference symbols in the drawings denote like elements.

Throughout the specification, when a member is located on another member, it includes not only when a member is in contact with another member but also when another member exists between the two members.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Hereinafter, a method of manufacturing a soft-type self-restoring film and a soft-type self-restoring film of the present invention will be described in detail with reference to embodiments and drawings. However, the present invention is not limited to these embodiments and drawings.

According to a first aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: forming a primer layer on a base film; Applying a self-restoring composition on the primer layer to form a self-restoring layer; Positioning the matte silicone release layer / protective layer composite film on the self-restoring layer before the self-healing composition is cured; And a step of curing the self-restoring layer.

FIG. 1 is a flow chart illustrating a process of manufacturing a soft-type self-restoring film according to an embodiment of the present invention, and FIGS. 2 to 5 illustrate a manufacturing process of a soft-type self-restoring film according to an embodiment of the present invention. FIG. 1 to 5, a process of manufacturing a soft-type self-restoring film according to an embodiment of the present invention includes forming a primer layer 120 on a base film 110, forming a primer layer 120 A step S130 of forming a mat release layer 140 on the self restoration layer 130 and a step S130 and a curing step 130 of a self restoration layer 130 on the self restoration layer 130, S140).

The step S110 of forming the primer layer 120 on the base film 110 is a step of forming the primer layer 120 on the base film 110 as shown in FIG.

The base film 110 may be formed of at least one selected from the group consisting of polycarbonate, polyester carbonate, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyvinyl chloride, poly (meth) acrylate, polyvinyl alcohol, There may be mentioned polyolefins such as propylene, polyester, polystyrene, polyamide, polyetherimide, polyacryl, polyimide, polyethersulfone, polysulfone, polyethylene, polymethylpentene, polyetherketone, polyetheretherketone, At least one member selected from the group consisting of cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate propionateIt may include me.

The thickness of the base film 110 may be in the range of 30 탆 to 500 탆. When the thickness of the base film 110 is 30 탆 , There is a problem that the film may be broken during coating due to the aftercoating, and the possibility of thermal wrinkling and curl is increased, which is unsuitable for mass production. When the thickness is more than 500 μm, In addition, there may be a problem of error occurrence in the lapping process of other coating layers.

The primer layer 120 may include a urethane primer having a good interlayer adhesion between the base film 110 and the self-restoring layer 130 and having excellent elongation as well as excellent vulcanization resistance. The primer layer 120 not only maintains the basic properties of the self-restoring film 100 but also improves the adhesion between the base film 110 and the self-restoring layer 130 during injection molding, It can also serve to prevent peeling.

The thickness of the primer layer 120 may be 0.5 탆 to 10 탆. If the thickness of the primer layer 120 is less than 0.5 탆, the adhesion of the primer layer 120 to the base film 110 may be deteriorated due to the penetration of the coating liquid during the coating, and polycarbonate (PC) or glass fiber There is a risk of thermal wrinkling of the coating layer, and when it is more than 10 탆, the appearance of the coating becomes poor, self-restoring property is deteriorated, and cracks may occur due to defective elongation.

The self-restoring layer forming step (S120) on the primer layer is a step of forming a self-restoring layer 130 by applying a self-restoring composition on the primer layer as shown in FIG.

The self-restoring layer 130 serves not only to prevent scratches, but also has a function of restoring itself even if scratches occur. The self-restoring layer 130 includes at least one polymer or copolymer selected from the group consisting of silicon, acrylic, and urethane, and may preferably be a silicone-acryl-urethane polymer. In the self-recovering layer 130, the silicon may be 2 wt% to 10 wt%, the acrylic 70 wt% to 82 wt%, and the urethane may be 10 wt% to 30 wt%. When the amount of silicon in the self-recovering layer is less than 2% by weight, there is a problem of poor adhesion, poor blocking and poor appearance, and when it is more than 10% by weight, there is also a problem of poor adhesion, poor blocking and poor appearance. When the amount of acrylic resin is less than 70% by weight, there is a problem of poor interlaminar adhesion, poor blocking and poor appearance, and in the case of more than 82% by weight, interlayer adhesiveness is poor, There is a problem of. When the urethane content of the self-recovering layer is less than 10% by weight, the interlayer adhesiveness is poor, and there is a problem of poor blocking and poor appearance due to tackiness (stickiness). When the content is more than 30% by weight, There is a problem that the self-restorability is poor.

When the thickness of the self-restoring layer 130 is less than 10 탆, the interlayer adhesiveness becomes poor. When the thickness is more than 60 탆, the coating layer is too thick to reduce the elongation, There is a possibility that the appearance is poor due to the residual solvent remaining and the blocking is poor. Therefore, the self-restoring composition may be applied by considering the thickness of the self-restoring layer after curing.

The self-restoration composition may be applied by any method known in the art without limitation, for example, roll to roll, gravure, micro gravure, A slot die, and a comma coating method. The self-restoring composition may be used by mixing a leveling additive and an anti-pollution additive for preventing stain resistance in order to exhibit coating processability.

The step S130 of placing the matte silicone release layer / protective layer laminate film on the soft-type self-restoring layer may be performed on the self-restoring layer 130 before the self-healing composition is cured, And placing the matte silicone release layer / protective layer laminate film 140 thereon.

The matte silicone release layer / protective layer laminate film 140 may include a film having a matte treatment and a silicon release treatment on the surface of the film or a mat and a film having a silicon release performance simultaneously implemented. The matte release layer / protective layer laminate film may be a mat release, a film in which the silicone release layer 142 and the protection layer 144 are laminated, and may be a silicone release layer / polyethylene terephthalate laminate film. Because the self-restoring layer 130 is tacky, it can be laminated during the coating process. In addition, there is no blocking and residue between the adhesive and the self-restoring layer of the matte silicone release layer / protective layer laminate film, and the self-restoring film can be protected by itself, and separation and separation can be easily performed.

The self-recovering layer curing step S140 is a step of curing the self-recovering layer 130 as shown in FIG.

The curing may be to thermally cure the self-healing composition by heat treating. The heat treatment temperature for the curing may be in the range of 40 캜 to 120 캜. If the heat treatment temperature is less than 40 캜, the residual solvent remains and the self-restoring property is poor. If the heat treatment temperature is more than 120 캜, there is a possibility of poor appearance due to over-curing and poor fire resistance.

FIG. 6 is a cross-sectional view showing a soft-type self-restoring film according to an embodiment of the present invention, and FIG. 7 is an enlarged view of a portion A in FIG. 6 and 7, the self-restoring layer 130 and the silicon release layer 142 of the matte silicone release layer / protective layer laminate film 140 may be formed as fine unevenness 132 may be formed. Since the self-restoration composition places the matte silicone release layer / protective layer composite film 140 on the self restoration composition prior to curing, the self-restoring composition 130 and the mat The fine irregularities 132 may be formed between the silicon release layers 142 of the silicone release layer / protective layer laminate film 140. [ Although the fine irregularities 132 are shown in an irregular pattern in FIGS. 6 and 7, they may include irregularities of regular or irregular patterns, and may include uniform irregularities or nonuniform irregularities. The arithmetical average roughness (Ra) of the fine irregularities 132 may be between 1 μm and 10 μm. The soft-film type self-restoring film of the present invention improves anti-blocking property and slippery property by including the fine irregularities 132 so that scratches that may occur during the process can be self-restored, scratches can be prevented, It can be wound in a roll shape with ease of winding.

8 is a cross-sectional view showing a soft-type self-restoring film according to another embodiment of the present invention. As shown in FIG. 8, the base film 110 may further include a matte release layer / protective film 140 on the bottom of the base film 110.

The total thickness of the self-restoring film 100 may be 40 탆 to 560 탆. When the total thickness of the self-restoring film 100 is less than 40 占 퐉, there is a problem that the film is broken during injection and fixing, there is a fear of occurrence of heat wrinkle, scratches occur, , It is too thick to cause a foaming foreign matter to be formed during coating, resulting in a defective appearance, and blocking may occur due to the residual solvent remaining.

The restoration principle of the soft-type self-restoring layer according to an embodiment of the present invention is such that when the self-restoring layer of the present invention is a silicon-acrylic-urethane, an initial state is a ladder structure, Silicone-acrylic urethane with resilience against external forces on the ground shrinks to reduce impact while absorbing its forces. The retracted silicone-acrylic urethane is restored by the restoring force after a few seconds or a few minutes, and the force is returned to the original state.

According to the method of manufacturing a soft-type self-restoring film according to an embodiment of the present invention, even if no particles are separately formed, fine protrusions and recesses are formed in the soft-film type self-restoring film through a simple manufacturing process, And when the external force is applied to the self-restoring film and physical damage such as a scratch is generated, the original state can be restored while the scratches are naturally self-removed by the self-restoring layer.

According to a second aspect of the present invention, there is provided a semiconductor device comprising: a base film; A primer layer formed on the base film; A self-restoring layer formed on the primer layer; And a matte silicone release layer / protective layer laminated film formed on the self-recovering layer, wherein an arithmetic mean roughness (Ra) between the self-recovering layer and the silicon release layer of the matte release layer / Wherein the fine unevenness is 1 to 10 mu m.

6, a self-restoring film 100 according to an exemplary embodiment of the present invention includes a base film 110, a primer layer 120, a self-restoring layer 130, and a matte release layer / And a film 140.

The base film 100 may be formed of at least one selected from the group consisting of polycarbonate, a polyester carbonate, a polyethylene terephthalate, a polybutylene terephthalate, a polyethylene naphthalate, a polyvinyl chloride, a poly (meth) acrylate, a polyvinyl alcohol, There may be mentioned polyolefins such as propylene, polyester, polystyrene, polyamide, polyetherimide, polyacryl, polyimide, polyethersulfone, polysulfone, polyethylene, polymethylpentene, polyetherketone, polyetheretherketone, At least one member selected from the group consisting of cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate, cellulose acetate propionateIt may include me.

The thickness of the base film 110 may be in the range of 30 탆 to 500 탆. When the thickness of the base film 110 is 30 탆 , There is a problem that the film may be broken during coating due to the aftercoating, and the possibility of thermal wrinkling and curl is increased, which is unsuitable for mass production. When the thickness is more than 500 μm, In addition, there may be a problem of error occurrence in the lapping process of other coating layers.

The primer layer 120 may include a urethane primer having a good interlayer adhesion between the base film 110 and the self-restoring layer 130 and having excellent elongation as well as excellent vulcanization resistance. The primer layer 120 not only maintains the basic physical properties of the soft-type self-restoring film but also improves the adhesion between the base film 110 and the self-restoring layer 130 during injection and molding, It can also serve to prevent peeling.

The self-restoring layer 130 serves not only to prevent scratches, but also has a function of restoring itself even if scratches occur. The self-restoring layer 130 includes at least one polymer or copolymer selected from the group consisting of silicon, acrylic, and urethane, and may preferably be a silicone-acryl-urethane polymer. In the self-recovering layer 130, the silicon may be 2 wt% to 10 wt%, the acrylic 70 wt% to 82 wt%, and the urethane may be 10 wt% to 30 wt%. When the amount of silicon in the self-recovering layer is less than 2% by weight, there is a problem of poor adhesion, poor blocking and poor appearance, and when it is more than 10% by weight, there is also a problem of poor adhesion, poor blocking and poor appearance. When the amount of acrylic resin is less than 70% by weight, there is a problem of poor interlaminar adhesion, poor blocking and poor appearance, and in the case of more than 82% by weight, interlayer adhesiveness is poor, There is a problem of. When the urethane content of the self-recovering layer is less than 10% by weight, the interlayer adhesiveness is poor, and there is a problem of poor blocking and poor appearance due to tackiness (stickiness). When the content is more than 30% by weight, There is a problem that the self-restorability is poor.

When the thickness of the self-restoring layer 130 is less than 10 탆, the interlayer adhesiveness becomes poor. When the thickness is more than 60 탆, the coating layer is too thick to reduce the elongation, There is a possibility that the appearance is poor due to the residual solvent remaining and the blocking is poor. Therefore, the self-restoring composition may be applied by considering the thickness of the self-restoring layer after curing.

The soft-type self-restoring film according to an embodiment of the present invention includes fine irregularities even if particles are not separately formed, so that when an external force is applied to the self-restoring film to cause physical damage such as scratches, The scratch can be restored to its original state while being smoothly removed by itself.

The soft type self-restoring film of the present invention may further include a matte silicone release layer / protective layer composite film 140 formed under the base film 110. The matte silicone release layer / protective layer laminate film 140 is a mat-treated film in which the silicone release layer 142 and the protective layer 144 are laminated and may be a silicone release layer / polyethylene terephthalate (PET) have. Because the self-restoring layer 130 is tacky, it can be laminated during the coating process. In addition, there is no blocking and residue between the adhesive and the self-restoring layer of the matte silicone release layer / protective layer laminate film, and the self-restoring film can be protected by itself, and separation and separation can be easily performed.

The soft-film type self-restoring film 100 according to an embodiment of the present invention may be used in various applications such as self-restoring hard coating, anti-fouling coating, anti-fingerprint coating, oil-repellent coating, anti-reflective coating, A blue light barrier coating), and the like.

The total thickness of the self-restoring film 100 may be 40 탆 to 560 탆. When the total thickness of the self-restoring film 100 is less than 40 占 퐉, there is a problem that the film is broken during injection and fixing, there is a fear of heat wrinkle, scratches occur and the restoration performance is deteriorated. It is too thick to cause foaming foreign matter during coating, resulting in defective appearance and blockage due to the residual solvent remaining.

The soft-plied self-restoring film according to an embodiment of the present invention improves anti-blocking property and slippery property by forming fine unevenness, thereby facilitating winding of the film, preventing scratches, Which prevents foreign matters from adhering to and contamination by fine dust, is easy to clean, and has antibacterial properties. In addition, the self-restoring film is soft and easy to realize a soft texture, and there is no restriction on the color of the product because there is no yellowing.

The soft-film type self-restoration film according to an embodiment of the present invention can be applied to the exterior of an electronic device such as a mobile phone, a PDA, a smart phone, a navigation device, a digital camera, an exterior of a general household appliance, Can be suitably used as an exterior material of the present invention.

Hereinafter, the present invention will be described in detail with reference to the following examples and comparative examples. However, the technical idea of the present invention is not limited or limited thereto.

[Example 1]

A urethane primer coating layer having a thickness of 5 占 퐉 was formed on polyethylene terephthalate (PET) having a thickness of 75 占 퐉 as a base film, and a silicon-acrylic-urethane polymer resin having a thickness of 25 占 퐉 was coated thereon using a roll- - Place the matte silicone release layer / polyethylene terephthalate (PET) laminate film before curing the acrylic-urethane polymer resin and cure at 80 to form micro-irregularities between the silicone-acrylic-urethane and matte silicone release layers to form a soft- Type self-restoring film.

[Comparative Example 1]

A film was produced under the same conditions as in Example 1, except that 5 wt% of silica particles were added to the silicone-acrylic-urethane polymer resin of Example 1 instead of the matte silicone release layer / Respectively.

[Comparative Example 2]

A film was produced under the same conditions as in Example 1, except that 5 wt% of acrylic particles were added to the silicone-acrylic-urethane polymer resin of Example 1 in place of the mat silicone release layer / Respectively.

[Comparative Example 3]

Except that 5 wt% of wax particles were added to the silicone-acrylic-urethane polymer resin of Example 1 in place of the matte silicone release layer / protective layer laminate film for soft pile texture implementation, the film was produced under the same conditions as in Example 1 Respectively.

[Comparative Example 4]

A film was produced under the same conditions as in Example 1, except that a mat-stretched polypropylene release film was used in place of the matte silicone release layer / protective layer liner film for the soft-fill texture implementation of the silicone-acrylic-urethane polymer resin of Example 1 Respectively.

Table 1 below shows the composition of the film for the soft-fill implementation of Example 1 of the present invention and Comparative Examples 1 to 4 and the thickness of each layer.

Base film
(탆) primer
(탆) Self restoration layer
(탆) Silica
particle
(weight%) acryl
particle
(weight%) Wax
particle
(weight%) Protective film Example 1 75 5 25 0 0 0 Mat silicone
Release film Comparative Example 1 75 5 25 5 0 0 silicon
Adhesive film Comparative Example 2 75 5 25 0 5 0 silicon
Adhesive film Comparative Example 3 75 5 25 0 0 5 silicon
Adhesive film Comparative Example 4 75 5 25 0 0 0 Mat stretching
Polypropylene
Release film

[evaluation]

The film formed through Example 1 and Comparative Examples 1 to 4 was tested for blocking, coating appearance, haze value, self-resilience, arithmetic mean roughness (Ra), and soft feel performance .

<Blocking test>

After coating, the presence or absence of blocking between the coated surface and the protective film surface was visually determined.

<Appearance test>

The protective films of all the finished films were peeled off and visually discriminated.

<Haze test>

The protective film of all the finished films was peeled off and measured with a haze meter.

<Self-stability test>

Self-Restoration to Brush Brush (Bronze Brush) The surface of the coated film was scrubbed several times with a force of 500 g or more and artificially repeated several times, and then the time required for the removal of the scratch was measured.

<Arithmetic mean illuminance (Ra)>

The arithmetic mean roughness (Ra) of the surface roughness was measured using an illuminance meter.

<Soft feel test>

The protective films of all the finished films were peeled off and judged as tactile.

Table 2 below shows the blocking, coating appearance, haze value, self-resilience, arithmetic mean roughness (Ra), and soft feel performance test of the self-restoring film formed through Example 1 and Comparative Examples 1 to 4 The results are shown.

blocking Coating Appearance Self Resilience Haze
(%) Arithmetic mean roughness (Ra)
(탆) Soft feel
touch Example 1 Good  Good Within 10 seconds 30 3 Good Comparative Example 1 Good Bad Within 10 seconds 5 0.5 Bad Comparative Example 2 Good Bad Within 10 seconds 3 0.3 Bad Comparative Example 3 Good Good Not restored 30 3 Good Comparative Example 4 Bad Bad Not restored 30 5 Good

As shown in Table 2, it was confirmed that the film of Example 1 exhibited excellent blocking, coating appearance, self-resilience, haze, arithmetic mean roughness (Ra), soft feel, .

The soft-type self-restoring film according to Example 1 of the present invention was excellent in blocking, but in Comparative Example 4 using a mat stretched polypropylene release film, blocking failure was confirmed.

The soft-film type self-restoring film according to Example 1 of the present invention was excellent in the appearance of the coating, but in Comparative Example 1 in which silica particles were charged, Comparative Example 2 in which acrylic particles were charged, and Comparative Example 4 in which a mat stretched polypropylene release film was used The defect was confirmed. It was confirmed that when the silica particles of Comparative Example 1 and the acrylic particles of Comparative Example 2 were charged, the silica particles had a particle size smaller than that of the coating layer and had a high specific gravity and could not protrude from the surface of the coating layer. Also, when the stretched polypropylene release film of Comparative Example 4 was used, it was confirmed that the cause of the coating appearance defect was caused by the occurrence of blocking.

Self-resilience of the soft-type self-restoring film according to Example 1 of the present invention was excellent within 10 seconds, but Comparative Example 3 using wax particles and Comparative Example 4 using a stretched polypropylene release film did not achieve self- Respectively. It was confirmed that when the wax particles of Comparative Example 3 were charged, the specific gravity of the wax particles was low and the hardness thereof was low, so that the wax particles were vulnerable to scratches, and scratches were generated in the wax particles during self-restoration performance evaluation. When the stretched polypropylene release film of Comparative Example 4 was used, it was confirmed that the self-restoration performance was not realized because the stretched polypropylene release film was not separated into the self restoration layer due to occurrence of blocking.

The haze of the soft-type self-restoring film according to Example 1 of the present invention was as high as 30%, but it was confirmed that the haze was low in Comparative Example 1 using silica particles and Comparative Example 2 using acrylic particles . In Comparative Example 1 using silica particles and Comparative Example 2 using acrylic particles, it was confirmed that the particle size was smaller than the thickness of the coating layer and the specific gravity was so high that it was not protruded on the surface of the coating layer, thereby causing a decrease in haze.

The arithmetic average roughness (Ra) of the soft-type self-restoring film according to Example 1 of the present invention was excellent at 3 탆, but the arithmetic average roughness (Ra) was comparable to that of Comparative Example 1 using silica particles and Comparative Example 2 using acrylic particles Respectively. In Comparative Example 1 using silica particles and Comparative Example 2 using acrylic particles, it was confirmed that the arithmetic average roughness (Ra) was lowered because the particle size was smaller than the coating layer thickness and the specific gravity was higher than that of the coating layer.

The soft feel of the soft-type self-restoring film according to Example 1 of the present invention was excellent, but the soft feel of the soft-feel type self-restoring film according to Comparative Example 1 using silica particles and Comparative Example 2 using the stretched polypropylene release film of Comparative Example 2 using acrylic particles 4, it was confirmed that the feel of soft feel was poor. In Comparative Example 1 using silica particles and Comparative Example 2 using acrylic particles, the particle size was smaller than the thickness of the coating layer and the specific gravity was so high that the coating surface did not protrude on the surface of the coating layer, resulting in unevenness of the soft feel, . In the case of Comparative Example 4 using a stretched polypropylene release film, it was confirmed that blocking and generation of poor soft feel due to poor appearance of the coating were caused.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

100: self-restoring film
110: base film
120: primer layer
130: self restoration layer
132: fine unevenness
140: matte silicone release layer / protective layer laminating film
142: Silicon release layer
144: Protective layer

Claims (5)

Forming a primer layer on the base film;
Applying a self-restoring composition on the primer layer to form a self-restoring layer;
Positioning the matte silicone release layer / protective layer composite film on the self-restoring layer before the self-healing composition is cured; And
Curing the self-restoring layer;
Lt; RTI ID = 0.0 &gt; a &lt; / RTI &gt; soft-film type self-restoration film.
The method according to claim 1,
Wherein the step of curing the self-restoring layer comprises forming a fine unevenness between the self-recovering layer and the silicone release layer of the matte release layer / protective layer laminate film as the self-restoring layer is cured. Lt; / RTI &gt;
A base film;
A primer layer formed on the base film;
A self-restoring layer formed on the primer layer; And
A matte silicone release layer / protective layer laminate film formed on the self-restoring layer;
/ RTI &gt;
Wherein the self-restoring layer and the silicon release layer of the matte release layer / protective layer laminate film comprise fine irregularities having an arithmetic mean roughness (Ra) of 1 占 퐉 to 10 占 퐉.
The method of claim 3,
Wherein the self-restoring layer comprises silicon, acrylic and urethane,
Wherein the silicon is from 2 wt% to 10 wt%, the acrylic is from 70 wt% to 82 wt%, the urethane is from 10 wt% to 30 wt%
Wherein the thickness of the self-recovering layer is 10 [mu] m to 60 [mu] m.
Soft film type self restoration film.
The method of claim 3,
Wherein the base film is at least one selected from the group consisting of polycarbonate, polyester carbonate, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyvinyl chloride, poly (meth) acrylate, polyvinyl alcohol, polyphenylene ether, A polyether sulfone, a polyether sulfone, a polyether sulfone, a polyether sulfone, a polysulfone, a polyethylene, a polymethylpentene, a polyetherketone, a polyetheretherketone, a polyether sulfone, a polymethyl methacrylate, a poly At least one selected from the group consisting of urethane, diacetyl cellulose, triacetyl cellulose, acetyl cellulose butyrate, isobutyl ester cellulose, ethylene-vinyl acetate copolymer, propionyl cellulose, butyryl cellulose and acetyl propionyl cellulose Wherein the base film has a thickness of 30 탆 to 500 탆,
Wherein the primer layer comprises a urethane-based primer, and the thickness of the primer layer is 0.5 탆 to 10 탆.
Soft film type self restoration film.
KR1020160003635A 2016-01-12 2016-01-12 Method for preparing soft feel type self-healing film and soft feel type self-healing film KR101793083B1 (en)

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WO2021040279A1 (en) * 2019-08-26 2021-03-04 삼성전자 주식회사 Foldable electronic device comprising protection member
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CN109735249A (en) * 2018-12-27 2019-05-10 合肥乐凯科技产业有限公司 A kind of dumb light lacquer painting protective film
CN109735249B (en) * 2018-12-27 2021-04-30 合肥乐凯科技产业有限公司 Matte paint protective film
WO2021040279A1 (en) * 2019-08-26 2021-03-04 삼성전자 주식회사 Foldable electronic device comprising protection member
CN115572553A (en) * 2022-09-22 2023-01-06 苏州易昇光学材料股份有限公司 Self-repairing flexible film based on multilayer coextrusion casting GPU and preparation method and application thereof
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