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WO2021054639A1 - Film de liaison et stratifié transmettant la lumière le comprenant - Google Patents

Film de liaison et stratifié transmettant la lumière le comprenant Download PDF

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Publication number
WO2021054639A1
WO2021054639A1 PCT/KR2020/011477 KR2020011477W WO2021054639A1 WO 2021054639 A1 WO2021054639 A1 WO 2021054639A1 KR 2020011477 W KR2020011477 W KR 2020011477W WO 2021054639 A1 WO2021054639 A1 WO 2021054639A1
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WO
WIPO (PCT)
Prior art keywords
bonding film
value
film
light
bonding
Prior art date
Application number
PCT/KR2020/011477
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English (en)
Korean (ko)
Inventor
김혜진
한재철
Original Assignee
에스케이씨 주식회사
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Publication of WO2021054639A1 publication Critical patent/WO2021054639A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/203—Adhesives in the form of films or foils characterised by their carriers characterised by the structure of the release feature on the carrier layer
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/245—Vinyl resins, e.g. polyvinyl chloride [PVC]
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
    • C09J2301/206—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer comprising non-adhesive protrusions
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/312—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier parameters being the characterizing feature

Definitions

  • the embodiment relates to a bonding film, a light-transmitting laminate including the same.
  • Polyvinyl acetal is used as a laminated glass (safety glass) or an intermediate layer of a light-transmitting laminate (a film for laminated glass).
  • Laminated glass is mainly used for windows, exterior materials of buildings, and automobile window glass. Laminated glass has the characteristics of not scattering its fragments even when it is broken, and not allowing penetration even with a certain strength of blow, thereby providing stability that can minimize damage or injury to objects or people located inside it. Can be secured.
  • the bonding film has a number of fine embossing on its surface in order to prevent blocking between the intermediate layers, the handling workability when the glass plate and the intermediate layer are superimposed (sliding property with the glass plate), and degassing property during the bonding process with the glass plate. Su is formed.
  • An object of the embodiment is to provide a bonding film having improved optical performance and the like when forming a light-transmitting laminate, a light-transmitting laminate including the same.
  • the bonding film according to an embodiment disclosed in the present specification includes a surface on which an emboss is formed.
  • the difference in peak density (Dp*) is a value obtained by subtracting Spk from S*pk.
  • Equation 1 The peak density coefficient (Pf) is expressed by Equation 1 below.
  • Equation 1 Pf is a peak density coefficient, and Dp* is a peak density difference (um).
  • the Pf value of the embossed surface is 1.67 or more.
  • the Dp* value of the side on which the emboss is formed may be 30 um or less.
  • the Dp* value of the side on which the emboss is formed may be 20 um or less.
  • the S*pk value may be more than twice the Dp* value.
  • Mr1 of the side on which the emboss is formed may be 30% or less.
  • the Sz value of the side on which the emboss is formed may be 30 to 90 ⁇ m.
  • the bonding film may be a single layer film of one layer or a laminated film of two or more layers.
  • the bonding film may contain a polyvinyl acetal resin.
  • the layer including the side on which the emboss is formed may include a plasticizer of 24% by weight to 40% by weight.
  • the bonding film may have a wedge shape on at least part or all of its cross-section.
  • a light-transmitting laminate includes a first light-transmitting layer, a bonding film disposed on one surface of the first light-transmitting layer, and a second light-transmitting layer disposed on the bonding film.
  • the bonding film includes a surface on which a regular or irregular pattern of embossing is formed.
  • the difference in peak density (Dp*) is a value obtained by subtracting Spk from S*pk.
  • Equation 1 The peak density coefficient (Pf) is expressed by Equation 1 below.
  • Equation 1 Pf is a peak density coefficient, and Dp* is a peak density difference (um).
  • the Pf value of the embossed surface is 1.67 or more.
  • the total number of bubbles generated in three light-transmitting laminates having a horizontal length of 300 mm and a vertical length of 300 mm may be 5 or less.
  • the moving means according to another embodiment disclosed in the present specification includes the light-transmitting laminate as a windshield.
  • the bonding film of the embodiment and a light-transmitting laminate including the same may provide a bonding film with improved optical performance when forming a light-transmitting laminate by controlling the characteristics of the embossed surface.
  • the term "combination of these" included in the expression of the Makushi format refers to one or more mixtures or combinations selected from the group consisting of the components described in the expression of the Makushi format, and the constituent elements It means to include one or more selected from the group consisting of.
  • B is located on A means that B is located on A or that B is located on A while another layer is located between them, and B is located in contact with the surface of A. It is limited to that and is not interpreted.
  • the evaluation of the amount of hydroxyl groups in the present specification was evaluated by measuring the amount of ethylene groups to which the hydroxyl groups of the polyvinyl acetal resin are bound in a method in accordance with JIS K6728.
  • Spk Reduced peak height
  • Sk Core height
  • Mr1 Peak material portion, %
  • Mr2 Value portion, %
  • the values of Spk, Sk, Mr1, and Mr2 are values derived from a graph of an entity ratio curve and can be measured by a 3D illuminometer.
  • the real material ratio curve (Abbott-Firestone curve) is a curve shown by mathematically converting the height of the surface contour of an object into a cumulative probability density function, and is one of the methods of expressing the surface characteristics of an object.
  • the equivalence line is applied.
  • the equivalent straight line is a straight line including 40% of the measurement points of the curve, and the slope is minimized when connecting both end points of the section by arbitrarily setting a section of 40% of the total section of the Areal material ratio in the curve. It means a straight line.
  • Values representing surface characteristics such as Spk, Sk, Mr1, and Mr2 values can be derived through the isolinear line.
  • the equivalent straight line intersects the axis at 0% entity ratio (Y axis) and the axis at 100% entity ratio (axis parallel to Y axis).
  • a line parallel to the X axis including the intersection of the isometric line and the axis (Y axis) at 0% of the entity ratio is L1
  • the Sk value means the vertical distance between the L1 and the L2.
  • the Mr1 value is a value evaluated according to ISO_25178, and refers to the actual ratio of the intersection point between the curve and the L1.
  • the Mr2 value is a value evaluated according to ISO_25178, and means the actual ratio of the intersection point of the curve and the L2.
  • Linear regression analysis is applied to the substance ratio curve.
  • a linear regression line is derived from the entity ratio curve at 0% to Mr1.
  • the Spk value means a difference between the height at 0% of the entity ratio and the height at the entity ratio Mr1 in the linear regression line.
  • the S*pk value means the difference between the height at 0% of the entity ratio in the entity ratio curve and the height at 0% of entity ratio in the equivalent straight line.
  • the bonding film prevents unnecessary bonding between the side and the side when winding, and provides a degassing performance when bonding with a light-transmitter such as a glass plate, so that a matte pattern or melt pattern with random dots formed on the surface of the bonding film. It is imparted with surface embossing properties such as melt fracture.
  • the bonding film having the embossed surface may have different degassing performance, edge sealing performance, and the like according to the surface characteristics. If only the degassing performance is emphasized, the edge sealing performance is insufficient, so that part of the surface embossing may remain after the main bonding.
  • the optical properties of the light-transmitting laminate may deteriorate due to bubbles not sufficiently removed during the bonding process. This problem occurs even in a colorless bonding film, but in the case of a colored film, pressing marks may occur, and such defects are more easily recognized and treated as more important defects.
  • the embossing of the side on which the emboss is formed collapses at an appropriate speed, and the bonding process with the glass plate, etc. proceeds with deaeration.
  • the above-mentioned problems are more difficult to solve, especially in the case of applying a low-temperature pre-bonding process of 90°C or less.
  • the inventors confirmed that by controlling the properties of the protrusions on the surface pattern of the bonding film, it was possible to suppress the occurrence of optical defects such as pressing marks without lowering the overall average roughness of the bonding film, and completed the implementation example. .
  • the bonding film according to an embodiment disclosed in the present specification includes a surface on which an emboss is formed, and a peak density coefficient (Pf) of the surface on which the emboss is formed is 1.67 or more.
  • the peak density coefficient (Pf) is expressed by Equation 1 below.
  • Equation 1 Pf is a peak density coefficient, and Dp* is a peak density difference (um).
  • the peak density difference (Dp*) means a value obtained by subtracting Spk from S*pk.
  • the Spk value is evaluated according to ISO_25178.
  • Spk and S*pk values can be derived from the real material ratio curve (Abbott-Firestone curve).
  • the Spk, S*pk values, etc. may be measured and calculated using a 3D illuminance meter.
  • the measurement of the 3D illuminance may be evaluated as an average value of values measured in a total area of 1,000,000 um 2 or more. Specifically, when measuring using a 3D optical profiler or a 3D laser measuring microscope, measure at least 5 times each at different locations, and apply the average of the values excluding the highest and lowest values as the 3D illuminance measurement value. I can. In the case of using a 3D laser measuring microscope, 3D illuminance can be measured by splicing images of neighboring locations using the stitching function, and the measurement of 3D illuminance using this stitching function is also a total area of 1,000,000 um 2 or more. It can be evaluated as the average of the values measured at.
  • the Pf value may be 1.67 or higher.
  • the Pf value may be 1.8 or more.
  • the Pf value may be 8 or less.
  • the Pf value may be 6 or less.
  • the bonding film may have excellent edge sealing properties even if the bonding process is performed at a relatively low temperature.
  • the Dp* value of the embossed surface may be 30 um or less.
  • the Dp* value may be 20 um or less.
  • the Dp* value may be 0 um or more.
  • the Dp* value may be 1.5 um or more. In this case, even if the bonding film is bonded to the light transmitting body at a relatively low temperature, optical defects such as pressing marks may not occur substantially.
  • the S*pk value of the embossed surface may be more than twice the Dp* value.
  • the S*pk value may be 2.2 times or more of the Dp* value.
  • the S*pk value may be 10 times or less of the Dp* value.
  • the S*pk value may be 8 times or less of the Dp* value.
  • the bonding film has excellent edge sealing properties, and the occurrence of pressing marks can be substantially suppressed.
  • the bonding film may have stable bonding properties when bonding with the light-transmitting layer.
  • the Mr1 value of the side on which the emboss is formed may be 30% or less.
  • the Mr1 value is a value evaluated according to ISO_25178 and can be derived from a substance ratio curve.
  • the Mr1 value can be measured and calculated using a three-dimensional roughness meter. Since the method of measuring the Mr1 value using a 3D illuminance meter is duplicated with the above description, the description thereof will be omitted.
  • the Mr1 value may be 30% or less.
  • the Mr1 value may be 18% or less.
  • the Mr1 value may be 3% or more.
  • the Mr1 value may be 5% or more.
  • the embossed surface of the bonding film may have an Sz value of 30 um or more and 90 um or less.
  • the Sz value is a value evaluated according to ISO_25178, refers to a sum of a maximum peak height value and a maximum valley depth value, and refers to a difference in height between the peak and valley.
  • the Sz value can be measured and calculated using a 3D illuminometer.
  • a 3D optical microscopy model Contour GT
  • VSI Mode Vertical scanning interferometry
  • the Sz value of the embossed surface may be 30 um or more.
  • the Sz value may be 40 um or more.
  • the Sz value may be 45 um or more.
  • the Sz value may be 90 um or less.
  • the Sz value may be 80 um or less.
  • the Sz value may be 75 um or less.
  • the bonding film having such a surface embossing property may have a stable degassing property.
  • the bonding film may be a single layer film or a multilayer film.
  • the bonding film may be formed of a bonding layer.
  • the bonding film may include a polyvinyl acetal resin, and may include a polyvinyl acetal resin and a plasticizer.
  • the bonding film may include 60% by weight or more and 76% by weight or less of a polyvinyl acetal resin.
  • the bonding film may include 70% by weight or more and 76% by weight or less of a polyvinyl acetal resin.
  • the bonding film may include a polyvinyl acetal resin in an amount of 71% by weight or more and 74% by weight or less. When the polyvinyl acetal resin is included in this range, relatively high tensile strength and modulus may be provided to the bonding film.
  • the polyvinyl acetal resin may have an acetyl group content of less than 2% by weight.
  • the polyvinyl acetal resin may have an acetyl group content of 0.01 or more and less than 1.5% by weight.
  • the polyvinyl acetal resin may have a hydroxyl group content of 15% by weight or more.
  • the polyvinyl acetal resin may have a hydroxyl group content of 16% by weight or more.
  • the polyvinyl acetal resin may have a hydroxyl group content of 19% by weight or more.
  • the polyvinyl acetal resin may have a hydroxyl group content of 30% by weight or less.
  • the polyvinyl acetal resin may be a polyvinyl acetal resin obtained by acetalizing a polyvinyl alcohol having a polymerization degree of 1,600 or more and 3,000 or less with an aldehyde.
  • the polyvinyl acetal resin may be a polyvinyl acetal resin obtained by acetalizing polyvinyl alcohol having a polymerization degree of 1,700 or more and 2,500 or less with an aldehyde.
  • the polyvinyl acetal resin may be obtained by synthesizing polyvinyl alcohol and aldehyde, and the type of the aldehyde is not limited.
  • the aldehyde may be any one selected from the group consisting of n-butyl aldehyde, isobutyl aldehyde, n-barrel aldehyde, 2-ethyl butyl aldehyde, n-hexyl aldehyde, and blend resins thereof.
  • the prepared polyvinyl acetal resin may have a refractive index characteristic with a small difference from the refractive index of glass, and excellent adhesion to glass.
  • the bonding film may include 24% by weight or more and 40% by weight or less of the plasticizer.
  • the bonding film may contain 24% by weight or more and 30% by weight or less of the plasticizer.
  • the bonding film may contain 26% by weight or more and 29% by weight or less of the plasticizer.
  • Any one selected from may be applied, and specifically, triethylene glycol di-2-ethyl butylate, triethylene glycol di-2-ethylhexanoate, triethylene glycol di-n-heptanoate, and combinations thereof. It may include any one selected from the group, more specifically triethylene glycol bis 2-ethylhexanoate (3G8) may be applied.
  • the bonding film may further include additives as needed, and illustratively, the additives are selected from the group consisting of antioxidants, heat stabilizers, UV absorbers, UV stabilizers, IR absorbers, glass adhesion modifiers, and combinations thereof. It can be either.
  • the antioxidant may be a hindered amine type or a hindered phenol type.
  • a hindered phenolic antioxidant is more preferred in the process of manufacturing polyvinyl butyral (PVB) requiring a process temperature of 150°C or higher.
  • PVB polyvinyl butyral
  • BASF's IRGANOX 1076, 1010, or the like can be used.
  • the thermal stabilizer may be a phosphite-based thermal stabilizer in consideration of compatibility with an antioxidant.
  • BASF's IRGAFOS 168 can be used.
  • UV absorber As the UV absorber, Chemisorb 12, Chemisolve 79, Chemisolve 74, Chemisolve 102, BASF's Tinuvin 328, Tinuvin 329, Tinuvin 326, etc. may be used as the UV absorber.
  • the UV stabilizer may be used, such as BASF's Tinuvin.
  • ITO, ATO, AZO, etc. may be used as the IR absorber, and a metal salt such as Mg, K, Na, etc., an epoxy-based modified Si oil, or a mixture thereof may be used as the glass adhesion modifier, but is not limited thereto. .
  • the bonding film may be a multilayer film.
  • the bonding film may be a laminate of two or more layers, a laminate of three or more layers, and a laminate of five or more layers.
  • the multilayer film may include a bonding layer in direct contact with a light-transmitting laminate such as a glass plate, and a core layer separated from the bonding layer.
  • the core layer may have functionality, and for example, may have functionality such as a heat shielding function layer.
  • At least one layer including the bonding layer may include a polyvinyl acetal resin corresponding to the composition of the single layer film described above, and may include a polyvinyl acetal resin and a plasticizer. Since the description of the polyvinyl acetal resin and the plasticizer is duplicated with the above description, the description thereof will be omitted.
  • the bonding film may include a sound insulation layer.
  • the sound insulation layer may be positioned between the bonding layers, and may be positioned on one surface of the bonding layer.
  • the sound insulation layer may include a polyvinyl acetal resin.
  • the sound insulation layer may include 54% by weight or more of a polyvinyl acetal resin.
  • the sound insulation layer may contain 60% by weight or more of a polyvinyl acetal resin.
  • the sound insulation layer may contain 76% by weight or less of a polyvinyl acetal resin.
  • the sound insulation layer may contain 70% by weight or less of a polyvinyl acetal resin.
  • the sound insulation layer may contain 24% by weight or more of a plasticizer.
  • the sound insulation layer may contain 30% by weight or more of a plasticizer.
  • the sound insulation layer may contain 46% by weight or less of a plasticizer.
  • the sound insulation layer may contain 40% by weight or less of a plasticizer.
  • the polyvinyl acetal resin included in the sound insulation layer may have an acetyl group content of 8 mol% or more.
  • the polyvinyl acetal resin may have an acetal group content of 8 mol% or more and 30 mol% or less.
  • the polyvinyl acetal resin included in the sound insulating layer 20 may have a hydroxyl group content of 26 mol% or less.
  • the polyvinyl acetal resin may have a hydroxyl group content of 10% by weight or more and 25% by weight or less. In this case, it is possible to impart more stable sound insulation properties to the bonding film.
  • the bonding film may be prepared in a sheet shape by extruding a composition for producing a bonding film including a resin, a plasticizer, and, if necessary, an additive, and molding through T-DIE.
  • a lamination means such as a feed block may be further applied to the front end of the T-DIE.
  • the bonding film may form an irregular pattern on the film surface by applying a melt fracture process before transferring the pattern through an emboss roller or a mold. Specifically, the temperature of the extruded bonding film is lowered using a die lip cooler when extruding the composition for producing a bonding film including a resin, a plasticizer, and, if necessary, an additive. Through this, an irregular concave block may be formed on the surface of the extruded bonding film.
  • a method of forming an irregular pattern on the surface of the film before transferring the surface of the bonding film through an emboss roller or a mold is not limited to the method described above. When an irregular pattern is formed on the surface of the bonding film, the film may have stable deaeration when bonding to the light-transmitter.
  • the bonding film manufactured in the form of a sheet may be manufactured as a bonding film through processes such as thickness control and embossing, but the manufacturing method of the bonding film of the embodiment is not limited to this method.
  • a single-layer film or a multi-layer film is manufactured in a sheet shape by the same method as described above, and then an emboss roller or a mold is applied to form a surface emboss of the film to form a bonding film.
  • the characteristics of the surface on which the film emboss is formed may be controlled by controlling the surface characteristics of the emboss roller or the mold.
  • the embossing roller or mold may be subjected to a shot blast treatment on a basic roller or mold, and may be subjected to a grit blast treatment to etch the surface of the roller or mold.
  • the surface characteristics can be controlled by adjusting the conditions (particle size, spraying pressure, spraying distance, spraying angle, etc.) to be applied during shot blasting and grit blasting, which complementarily reflects the embossing characteristics of the film surface. do.
  • particles having an average outer diameter of 50 um or more and 80 um or less on the surface of a basic roller or mold having an Rz roughness value of 30 um or more and 90 um or less with unevenness in the form of a matte pattern are 20 cm or more and 25 cm
  • a shot blast treatment in which the nozzle is sprayed directly at a spraying pressure of 0.3 MPa or more and 0.5 MPa or less at the following distance, and the angle of the nozzle is applied at 45° or more and 55° or less.
  • the shot blast treatment the kurtosis of the concave portion of the roller or mold surface may be lowered. Through this, it is possible to lower the kurtosis of the convex portion of the film transferred from the roller or the mold, so that the bonding film may have a more stable edge sealing property.
  • the grit blast treatment can be applied by applying an angle of 85° or more and 105° or less.
  • the bonding film may be a bonding film having a head-up display function in which at least a part or all of the cross-section has a wedge shape.
  • the bonding film may have a wedge shape having a different thickness of one end and the other end of the cross section, and may have a function of preventing formation of a double image.
  • the light-transmitting laminate includes a first light-transmitting layer, a bonding film disposed on one side of the first light-transmitting layer, and a second light disposed on the bonding film. It includes a transmission layer.
  • the first light-transmitting layer and the second light-transmitting layer may each independently be a light-transmitting glass or a light-transmitting plastic.
  • the bonding film described above is applied, and a detailed description thereof will be omitted since it overlaps with the above description.
  • the total number of bubbles generated in three light-transmitting laminates having a horizontal length of 300 mm and a vertical length of 300 mm may be 5 or less.
  • a detailed description of the condition and method for measuring the number of bubbles in the light-transmitting laminate is duplicated with the description of the following evaluation example, and thus description thereof will be omitted.
  • the moving means includes the light-transmitting laminate described above.
  • the moving means comprises a body part forming the main body of the moving means, a drive part (engine, etc.) mounted on the body part, a drive wheel (wheel, etc.) rotatably mounted on the body part, and a connection between the drive wheel and the drive part.
  • a connecting device ;
  • a windshield which is a light-transmitting laminate mounted on a part of the body to block wind from the outside.
  • a pattern mold MOLD #1 having a fine pattern was manufactured by sequentially applying a shot blast treatment and a grit blast treatment to the steel mold MOLD #0.
  • the shot blast treatment was carried out by spraying particles with an average outer diameter of 60 um, which passed through a 150 mesh foreign matter removal filter, at a distance of 20 to 25 cm at a spray pressure of 0.4 MPa in a direct pressure manner.
  • the angle between the mat pattern surface and the spray particles (or nozzles) was 45° to 55°.
  • the grit blast treatment was carried out by spraying particles having an average outer diameter of 5 um, which passed through a foreign matter removal filter of 150 mesh, at a distance of 30 to 40 cm at a spray pressure of 0.2 MPa in a direct pressure manner.
  • the angle between the mat pattern surface and the spray particles (or nozzles) was 85° to 105°.
  • Preparation of additives 0.1 parts by weight of Irganox1076 as an antioxidant, 0.2 parts by weight of TINUVIN-328 as a UV absorber, and 0.03 parts by weight of Mg Acetate as a bonding strength control agent were mixed so as to be sufficiently dispersed in a tumbler (total 0.33 parts by weight).
  • Sheet 1 In 72.62wt% of polyvinyl butyral resin (A), 3g8 is added to 27wt% as a plasticizer, 0.33wt% of additives, and 0.05w% of pigment are put into one twin screw extruder, and then extruded by T-DIE. It was made into a sheet through. During extrusion film formation, a die lip cooler was not applied and no melt fracture was additionally formed, thereby obtaining a sheet having a mirror surface. The prepared sheet had a thickness of 760 um and a width of 1.0 M.
  • Sheet 2 A sheet is prepared in the same manner as Sheet 1, but an additional melt fracture (M/F) is formed by applying a die lip cooler at the time of extrusion film formation and maintaining it at 15°C. I got a sheet.
  • the prepared sheet had a thickness of 760 um and a width of 1.0 M.
  • Comparative Example 1 A sheet having a size of 300 mm in width and 300 mm in length was cut based on the central portion of the sheet 1 in the width direction. In the same manner, a total of three sheets were cut in the longitudinal direction of Sheet 1. After placing the pattern mold MOLD#0 on both sides of the sheet, patterning was performed using a laminator. Patterning was performed for 6 minutes by applying a pressure of 1 atm by applying the temperature shown in Table 1 below. After cooling the patterned sheet to room temperature, the mold was peeled off to obtain a specimen.
  • Comparative Example 2 The sheet 2 was cut into a size of 450 mm in width and 450 mm in length based on the central portion of the sheet 2 in the width direction. The cut sheet was left to stand at 20°C and 20rh (relative humidity)% for 2 days, followed by aging. A specimen having a width of 300 mm and a length of 300 mm was collected from the aging sheet based on the central portion in the width direction of the sheet. A total of three specimens were prepared in the same manner.
  • Comparative Example 3, Example 1, Example 2, and Example 3 The sheet 1 was cut into a size of 450 mm in width and 450 mm in length based on the central portion of the sheet 1 in the width direction. The cut sheet was left to stand at 20°C and 20rh (relative humidity)% for 2 days, followed by aging. From the aging sheet, a sheet having a width of 300 mm and a length of 300 mm was collected based on the central portion in the width direction of the sheet. A total of three sheets were prepared in the same manner. After placing the pattern mold MOLD#1 on both sides of the sheet, patterning was performed using a laminator. Patterning was performed for 6 minutes by applying a pressure of 1 atm by applying the temperature shown in Table 1 below. After cooling the patterned sheet to room temperature, the mold was peeled off to obtain a specimen.
  • the material ratio was measured through a 3D illuminance measuring device.
  • the measurement was in accordance with ISO_25178, and Spk values, S*pk values, Mr1 values and Sz values were obtained from the film surface, respectively.
  • the 3D roughness of the film was measured in VSI Mode (Vertical scanning Interferometry) using a non-contact 3D illuminometer (3D Optical Microscopy, model Contour GT) of Bruker, and S*pk from the measured result value. was obtained, and values such as Spk calculated from the CORE ROUGHNESS of the measurement area were obtained.
  • Measurements were made using an eyepiece 2x objective lens 5x. At this time, the length of the x-axis was 0 to 0.887 mm, and the area of the y-axis was 0 to 0.670 mm. In the same pattern, the measurement area was randomly determined and the measurement was repeated 5 times, and the measurement values were obtained by averaging the three measurement values excluding the highest and lowest values. The results are shown in Table 1 below.
  • Edge sealing evaluation edge sealing
  • Each sample for evaluation was 300 mm in width and length, and the length of the edge slope of each sample was 1200 mm, and three samples were prepared to evaluate the edge sealing at a total length of 3600 mm.
  • the pre-bonding process was carried out by degassing at 20° C. for 5 minutes using a vacuum ring, and then maintaining at different temperatures between 100° C. and 70° C. for 15 minutes, respectively.
  • Appearance score evaluation Visually evaluate the sample for evaluation, and 5 points when the edge sealing is perfect and no pattern is visible, 4 points when the edge sealing degree is good and weak patterns are visually confirmed, and the edge sealing degree is usually
  • the case where the pattern was visually confirmed was evaluated as 3 points, the case where the degree of edge sealing was bad and the pattern was visually confirmed was evaluated as 2 points, and the case where the degree of edge sealing was bad and the pattern was strongly visually confirmed was evaluated as 1 point. .
  • Table 2 the scores of the three samples were calculated and displayed as a total score.
  • the pre-bonded sample was subjected to main bonding in an autoclave at a temperature of 140° C. and a pressure of 1.2 MPa for 20 minutes to obtain laminated glass.
  • the time taken for the main bonding including the heating time and the temperature reduction time, was about 90 minutes.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laminated Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

Un mode de réalisation concerne un film de liaison et un stratifié transmettant la lumière le comprenant, et concerne un film de liaison comprenant une surface gaufrée, la surface gaufrée ayant une valeur Pf d'au moins 1,67. Le film de liaison présente les propriétés de la surface gaufrée contrôlée, et ainsi les propriétés optiques, les propriétés d'étanchéité de bord, etc. sont améliorées lors de la formation du stratifié transmettant la lumière.
PCT/KR2020/011477 2019-09-19 2020-08-27 Film de liaison et stratifié transmettant la lumière le comprenant WO2021054639A1 (fr)

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KR1020190115399A KR102254665B1 (ko) 2019-09-19 2019-09-19 접합용 필름 및 이를 포함하는 광투과 적층체

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JP7514975B2 (ja) 2022-06-28 2024-07-11 チャン チュン ペトロケミカル カンパニー リミテッド ポリマーフィルムおよびその使用

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KR20150140345A (ko) * 2013-04-09 2015-12-15 솔루티아인코포레이티드 엠보싱된 중합체 시트
KR20180061189A (ko) * 2015-09-30 2018-06-07 세키스이가가쿠 고교가부시키가이샤 접합 유리용 중간막 및 접합 유리
KR20180063174A (ko) * 2015-09-30 2018-06-11 아사히 가라스 가부시키가이샤 영상 투영 구조체 및 영상 투영 방법
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KR20090010952A (ko) * 2006-05-12 2009-01-30 세키스이가가쿠 고교가부시키가이샤 합판 유리용 중간막 및 합판 유리
KR20150140345A (ko) * 2013-04-09 2015-12-15 솔루티아인코포레이티드 엠보싱된 중합체 시트
KR20180061189A (ko) * 2015-09-30 2018-06-07 세키스이가가쿠 고교가부시키가이샤 접합 유리용 중간막 및 접합 유리
KR20180063174A (ko) * 2015-09-30 2018-06-11 아사히 가라스 가부시키가이샤 영상 투영 구조체 및 영상 투영 방법
WO2018221326A1 (fr) * 2017-05-29 2018-12-06 Ａｇｃ株式会社 Stratifié et procédé de fabrication d'un tel stratifié

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JP7514975B2 (ja) 2022-06-28 2024-07-11 チャン チュン ペトロケミカル カンパニー リミテッド ポリマーフィルムおよびその使用
US12053956B2 (en) 2022-06-28 2024-08-06 Chang Chun Petrochemical Co., Ltd. Polymer film and uses of the same

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