EP2888104A1 - Bande de substrat en verre - Google Patents

Bande de substrat en verre

Info

Publication number
EP2888104A1
EP2888104A1 EP13745693.5A EP13745693A EP2888104A1 EP 2888104 A1 EP2888104 A1 EP 2888104A1 EP 13745693 A EP13745693 A EP 13745693A EP 2888104 A1 EP2888104 A1 EP 2888104A1
Authority
EP
European Patent Office
Prior art keywords
thin glass
glass substrate
adhesive film
substrate tape
thin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13745693.5A
Other languages
German (de)
English (en)
Inventor
Ulrich Neuhaeusler
Juergen Vogt
Stephan ZACHMANN
Christian GÖRICKE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schott AG
Original Assignee
Schott AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schott AG filed Critical Schott AG
Publication of EP2888104A1 publication Critical patent/EP2888104A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B32B3/10—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 discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/14—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 discontinuous layer, i.e. formed of separate pieces of material characterised by a face layer formed of separate pieces of material which are juxtaposed side-by-side
    • B32B3/16—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 discontinuous layer, i.e. formed of separate pieces of material characterised by a face layer formed of separate pieces of material which are juxtaposed side-by-side secured to a flexible backing
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/064—
    • 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
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B15/00—Attaching articles to cards, sheets, strings, webs, or other carriers
    • B65B15/04—Attaching a series of articles, e.g. small electrical components, to a continuous web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D73/00—Packages comprising articles attached to cards, sheets or webs
    • B65D73/02—Articles, e.g. small electrical components, attached to webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/48—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
    • C03B17/06—Forming glass sheets
    • C03B17/064—Forming glass sheets by the overflow downdraw fusion process; Isopipes therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • 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
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays

Definitions

  • the invention relates to a glass substrate tape consisting of a plurality of thin glass blanks on an adhesive film.
  • thin glass is increasingly used.
  • Examples include touch panels, capacitors, thin-film batteries, flexible printed circuit boards, flexible OLEDs, flexible photovoltaic modules, e-papers or micro-electro-mechanical systems (MEMS) or micro-opto-electro-mechanical systems (MOEMS).
  • MEMS micro-electro-mechanical systems
  • MOEMS micro-opto-electro-mechanical systems
  • Thin glass is becoming more and more of a focus for many applications due to its excellent properties such as resistance to chemicals, thermal shocks, gas tightness, high electrical insulation, coefficient of expansion, flexibility, high optical quality and light transmission or high surface quality with very low roughness due to a fire polished finish Surface of the two thin glass sides.
  • Thin glass is understood here to mean thin glass with thicknesses of less than approximately 1.2 mm, up to thicknesses of 15 ⁇ m and smaller.
  • thin glass Due to its flexibility, thin glass is increasingly rolled up as a thin glass after production and stored as a glass roll or transported for packaging or further processing.
  • the thin glass can also be rolled up after an intermediate treatment, for example a coating or finishing of the surface, and fed to a further use.
  • the rolling of the glass involves the advantage over a storage and the transport of flat spreading material the advantage of a more cost-effective compact storage, transport and handling in further processing.
  • particulate inclusions between the thin glass layers in a glass roller lead to damage.
  • they can scratch the surface, which is assisted in particular by a displacement or a movement of the thin glass layers with one another or relative to one another, or they can lead to a crack or break by causing a punctiform pressure load.
  • dirt particles on the thin glass surface can affect a subsequent coating or packaging qualitatively or procedurally.
  • Various solutions have become known to wind a continuous glass ribbon on a roll in order to coat it in a later treatment step in the roll-to-roll process or to assemble.
  • WO 87/06626 proposes the use of a glass roll for a process for coating thin glass in a roll-to-roll process.
  • a glass non-abrasive material such as a plastic film
  • the plastic film may be a polymer such as polyester or polyethylene and may also contain an embossed pattern to protect the metal or metal oxide coating on the glass.
  • To coat the glass ribbon the glass ribbon and plastic film are separated. After coating, the glass ribbon is rewound with a new plastic film as an intermediate layer.
  • the cutting of the glass ribbon into the appropriate blank dimensions is then carried out in a later process step after the coating of the thin glass.
  • the disadvantage here is a correspondingly high cutting waste on refined thin glass. Compared to the thin glass raw material, the refined thin glass has a significantly higher value. Also, the coated or finished thin glass cut waste may not be easily returned to the thin glass manufacturing process by meltdown.
  • US 3,089,801 discloses, in order to protect and support the handling of thin glass as a continuous glass ribbon in subsequent treatment steps, the use of wrapping paper or aluminum foil coated with a lightly adhering adhesive layer and removably adhered to the glass. As a result, the glass is to be given greater strength during bending and handling and thus also protected from breaking when rolled up.
  • the disadvantage is that the adhesive layer can not always be solved residue-free and thus affects or prevents the subsequent use of the thin glass.
  • the carrier layer should have an elongation of less than 10% under a tensile strength of 50 MPa.
  • polyethylene and soft vinyl chloride are excluded among others as unsuitable.
  • the US 201 1/0023548 also proposes a double-sided enclosure of the thin glass for protection and handling in subsequent processes.
  • the two-sided or one-sided cover made of a heat-resistant film is in this case limited in particular to the edge region, but may also extend over the entire surface of the thin glass.
  • the thin glass may be a continuous rolled up glass ribbon or a single glass sheet.
  • a heat-resistant film a metal, a silicone or a polymide is proposed, which withstands temperatures up to 300 ° C.
  • the border is molded directly onto the thin glass or glued on with an acrylic adhesive. The disadvantage is that this is a difficult to detach compound. When removing the protective skirt, there is a high risk of undesirable damage to the thin glass.
  • the border at the edge serves as a spacer, so that an air gap arises between the thin glass layers.
  • the disadvantage here is that the thin glass layers can vibrate or sag and are thus exposed to a risk of breakage.
  • the object of the invention is therefore to avoid the disadvantages described above and to provide protection for thin glass during transport and handling in subsequent processes available, which is inexpensive and easy to handle.
  • a glass substrate tape is provided on which at least two, preferably a plurality of individual thin-glass panes, ie thin glass blanks, are fixed on a tape made of an adhesive film.
  • the individual thin-glass panes can undergo subsequent processing steps in this fixation, whereby they are securely held and protected.
  • the adhesive film serves as a carrier tape.
  • Processing steps are, for example, grinding, polishing, washing, printing, a photolithographic process, the application of one or more coatings such as an antireflective coating, easy-to-clean coating, an electrically conductive coating, a lamination process or else the assembly with, for example electronic component.
  • Advantage of the glass substrate tape according to the invention is the free accessibility of the entire surface on one or the other side of the thin glass blank, a simple, cost-effective handling of a variety of individual blanks made of thin glass with an integrated secure packaging option in the form of a roll or a meander-shaped stacking.
  • the thin glass is secured in the event of breakage or chipping, so that resulting fragments or fragments can not become a disruptive factor in a subsequent process step, but remain safely on the adhesive carrier tape.
  • the thin glass blanks can be easily and easily loosened again from the adhesive carrier film without residues remaining on the glass surface. Since in the packaged state as a roll or stack both surfaces of the thin glass blanks are contacted in the same way with the film, it can not lead to an undesirable different aging and change of the glass surface.
  • the adhesive film serves as protection for the transport and storage of the thin glass panes.
  • a further advantage of the invention is that the cutting of the individual thin glass panes into specified dimensions takes place from the not further refined glass strip.
  • the blank waste thus still has a low value added and can also be easily recycled as a raw material in the melting and manufacturing process of the thin glass.
  • Cost-intensive follow-up processes are only carried out on the occasional smaller thin-glass blanks.
  • they can also be carried out in the cost-effective roll-to-roll process as in the continuous glass strip. In doing so, they are securely fixed and do not have to be relocated during processing, which always means a high risk of breakage and cracks in thin glass.
  • the thin glass is produced in a known manner by the down-draw method or the overflow drawdown method (cf., for example, WO 02/051757 A2 for the down-draw method and WO 03/051783 A1 for the overflow down-draw method).
  • the shaped and drawn endless belt is wound up on a glass roll and cut to length.
  • the thin glass blanks are separated from the glass roll or immediately after drawing from the glass ribbon.
  • the thin glass can in this case consist of any suitable type of glass, in particular of a borosilicate glass, aluminoborosilicate glass, soda lime glass, aluminosilicate glass, or a lithium aluminum silicate glass.
  • a borosilicate glass in particular of a borosilicate glass, aluminoborosilicate glass, soda lime glass, aluminosilicate glass, or a lithium aluminum silicate glass.
  • the surface is fire-polished and very smooth. It has been shown that, in particular in the thickness range of less than 100 ⁇ m, a particularly smooth surface is created by the thin drawing off of low-alkali glasses.
  • the thin glass blanks which are positioned and fixed according to the invention on the glass substrate tape, usually have a thickness of less than or equal to 350 .mu.m, preferably less than or equal to 100 .mu.m, preferably less than or equal to 70 .mu.m, more preferably less than or equal to 50 .mu.m, particularly preferably less than or equal to 25 .mu.m at least 5 ⁇ , preferably of at least 10 ⁇ , more preferably of at least 15 ⁇ .
  • Preferred thin glass thicknesses are 15, 20, 25, 30, 35, 50, 55, 70, 80, 100, 130, 145, 160, 190, 210, 280 ⁇ .
  • the thin glass blanks can have any shape in their areal spread, preferred are square, rectangular or round blanks.
  • the thin glass blanks preferably have a fire-polished surface on at least one surface of their two sides, preferably on the surface of both sides.
  • the square RMS Rq on the surface of at least one of its two sides is preferably at most 1 nanometer, preferably at most 0.8 nanometers, more preferably at most 0.5 nanometers.
  • the average roughness Ra is at the surface of at least one of its two sides at most 2 nanometers, preferably at most 1, 5 nanometers, more preferably at most 1 Nanometers, each on a gauge length of 670 ⁇ .
  • these roughness values characterize the surface of both sides of the thin glass blanks.
  • the surface of a thin glass blank which adheres to the adhesive film is characterized by these roughness values.
  • the adhesion effect of the film to the glass surface on one side of the film and / or the thin glass is higher than on the other side or the static friction of the adhesion film on the glass surface is higher than on one side of the adhesion film and / or the thin glass the other side.
  • the side of the adhesive film which has a higher adhesion effect in cooperation with a fire-polished thin glass surface and therefore in contact with a thin glass surface in the rolled-up state of the glass substrate tape, has an adhesion frictional force F s in the range of greater than 20 N, preferably greater than 50 N.
  • adhesion force is the force peak understood that must be overcome so that the adhesive film sets relative to the thin glass surface in motion.
  • the opposite side of the adhesive film which has a comparatively lower adhesion in cooperation with a fire-polished thin glass surface and is in contact with a thin glass surface only in the rolled or collapsed state of the glass substrate belt, has an adhesion frictional force F s in the range of 0.10 to 10N. preferably from 0.10 to 2 N. Furthermore, the opposite side of the adhesive film, which in cooperation with a fire-polished thin glass surface has a lower adhesion effect compared frictional force F D in the range of 0.10 to 5 N, preferably from 0.10 to 1, 5 N. Frictional force is understood to be the averaged force via a test path after overcoming the stiction which is necessary for a relative movement between the intermediate material and the glass surface.
  • the values for the static friction F s and the friction force F D apply in each case in accordance with a measurement according to DIN EN ISO 8295 on an electromechanical universal testing machine the Schenk Trebel in the standard climate at 23 ° C and 50% relative humidity according to DIN 50 014 with a normal force of 1, 96 N.
  • the material for the adhesive film is any material which is suitable as an adhesive film on at least one surface.
  • PE polyethylene
  • PVC polyvinyl chloride
  • It may also be a composite film, wherein a film of the composite is preferably a PE or PVC, for example, a composite film of a polyethylene terephthalate (PET) and soft polyvinyl chloride (plasticized PVC).
  • the thickness of an adhesive film is in the range of less than 6 mm, preferably in the range of less than or equal to 2 mm, more preferably less than or equal to 1 mm, most preferably less than or equal to 0.5 mm, especially in the range of 30 to 350 ⁇ m, preferably 60 to 200 ⁇ m.
  • Adhesive film is understood to be a soft plastic film with a very smooth underside, which adheres to a thin glass surface without adhesive. In contrast to an adhesive film, it can be removed from the substrate in a matter of seconds even after a relatively short time without aids and without leaving any residue.
  • the effect of adhesion or attachment force is mainly due to the so-called van der Waals forces, i. weak attractive forces that exist between the molecules in the surface of the thin glass and the adhesive film and the stronger, the smoother the surfaces are.
  • the adhesive film is an electrostatically charged adhesive film.
  • the adhesive film has on its adhesive surface a microfine structure, for example in the form of very small suction cups, which assists adhesion to the thin glass surface.
  • the adhesive sheet material may be an adhesive textile, such as a polyester fabric, provided with an adhesive coating on the contact surface with the thin glass.
  • This coating can also be an adhesive which ensures a flat, even repeatable removability of the adhesive textile. It is advantageous here that, for example, during a treatment or processing of the thin glass steps in the roll-to-roll method, the glass substrate tape is kept under a certain tension can, without deforming the carrier film. This allows the thin glass blanks to be positioned precisely.
  • the adhesive film may be in one embodiment, a metal foil such as an aluminum foil, which is provided on the contact surface to the thin glass with an adhesive coating.
  • This coating can also be an adhesive which ensures a flat, even repeatable detachability of the adhesive film.
  • Such an adhesive coating is especially a butyl rubber or silicone rubber, but may also be, for example, a silicone gel, urethane rubber, natural rubber, butadiene rubber, ethylene-propylene rubber, chloroprene rubber, nitrile rubber, nitrile isoprene rubber, acrylic rubber, fluororubber, chlorosulfonated polyethylene, chlorinated polyethylene or epichlorohydrin rubber.
  • the adhesive film can also be coated on one side with, for example, a cover film, cardboard, a non-adhesive plastic, a fabric or a metal film.
  • a cover film, cardboard, a non-adhesive plastic, a fabric or a metal film Especially the coating with a fabric ensures a stable transport during subsequent process steps and prevents unwanted stretching, stretching or deformation of the adhesive carrier film in the transport during the process steps and also facilitates later detachment of the thin glass panes of the adhesive film.
  • the coating can also be a compressible material such as a compressible cardboard or a
  • Foam sheet e.g. from a polyolefin foam, in particular a crosslinked polyolefin foam, or else a foam film made of polyethylene or polyurethane.
  • the coating may each be a cover which is bonded to and peelable by the adhesive force of the film or a firmly applied non-peelable coating.
  • the thickness of such a coated adhesive film is in the range of less than 6 mm, preferably in the range of less than or equal to 2 mm, more preferably less than or equal to 1 mm, most preferably less than or equal to 0.5 mm.
  • the thickness of the adhesive film is adjusted so that the neutral phase lies between tensile and compressive stresses in the rolled state of a thin glass substrate and an adjacent film in the adhesive layer connecting both layers. As a result, both surfaces are free of forces and it is a permanent installation of the thin glass blanks during unrolling of the glass substrate tape prevented.
  • the thickness of the adhesion foil (D p ) is taking into account the thickness of the thin glass substrates (D g ), the Poisson's number of adhesion foil (v p ), the Poisson's number of thin glass substrates (v g ), the modulus of adhesion of the adhesion foil (E p ) and of the modulus of elasticity of thin glass substrates (E g ) is determined as follows:
  • the adhesive film may cover the entire first or second surface of the thin glass blanks. This offers the advantage that the thin glass blanks can be treated in one process step on their entire first or on their entire second surface. In another embodiment, however, the adhesion film can also cover only the entire edge region or sections of the edge region of the first and / or second surface of the thin glass blanks, for example the edge region of two opposite edges of the thin glass blanks. This offers the advantage that the thin glass blanks can be treated simultaneously on their first and second surfaces in one process step.
  • the adhesion film can project beyond the edge region of the first and second surfaces of the thin glass blanks perpendicular to the longitudinal direction of the glass substrate tape and form a projection.
  • the supernatant can also serve as a transport strip to move the glass substrate belt with a drive device and / or to steer.
  • the glass substrate belt can be driven and moved with the aid of one or two interacting pressure rollers, which forcefully exert a drive or steering force on the projection.
  • the projection can also have recesses, in particular punched out, in which form fit the teeth of a gear or toothed belt engage and exert a driving force by which the glass substrate belt is driven and moved.
  • the supernatant may also have a coding, via which the position and specification of the glass substrate strip or the individual thin glass blanks can be read.
  • the coding can also be perpendicular to the running direction of the strip, ie transversely to the glass tube. stratband be mounted between fixed on the Adscosungsfolie thin glass blanks.
  • the coding can be applied directly to the adhesive film, or special coding fields can be applied to the adhesive film, to which the coding is applied, for example printed.
  • the coding fields can be printed or affixed label fields which are easy to label or print. If necessary, they can also be printed or affixed with coding. For adhesion, the adhesion of the adhesive film can be used.
  • the glass substrate tape is layered meandering for storage or transport as a whole or rolled up into a compact roll.
  • the meandering layering provides gentle storage for the thin glass blanks since the blanks do not provide bending forces, i. Be subjected to tensile forces.
  • the role has the advantage that the subsequent treatment or processing of the thin glass blanks in a roll-to-roll process can be carried out in a comfortable manner and the glass substrate strip can be held under a certain tension for exact alignment of the thin glass blanks.
  • the invention further includes a method of making a glass substrate tape comprising the steps of making a thin glass tape in a down-draw or an overflow down-draw method, separating thin glass blanks from the thin glass tape, and positioning and contacting the thin glass blanks on the adhesive film.
  • the thin glass ribbon is produced endlessly by a down-draw or overflow down-draw method in a known manner. Before separating thin glass blanks from the thin glass band, this can still be prefabricated, for example by separating the lateral edge sections or a process for relaxing thermal stresses. It can also be wound up on a roll. The separation of the thin glass blanks from the thin glass ribbon can then take place directly from the endless strip after the drawing process or from a glass roll. The separation is done with known technologies such as a laser cutting process or by cutting tool by scribing and breaking. The separated thin glass blanks are then stored by means of a gripping and positioning device, such as a robot arm, positionally accurate on the prepared adhesive film.
  • a gripping and positioning device such as a robot arm
  • the adhesive film is wound from roll to a roll and forms with a slight bias a flat smooth surface for receiving the thin glass blanks.
  • the adhesive film can then be firmer with a pressure roller be connected to the surface of the thin glass blanks.
  • the adhesive film coated with the thin glass blanks is then rolled up or folded together in meandering fashion.
  • the adhesive film Before contacting the thin glass blanks with the adhesive film, these are dirt, dust and grease-free, which is especially true after pulling the thin glass. Before sticking, the adhesive film is spread flat and clean in order to apply the thin glass blanks over the entire surface and without wrinkling. Wrinkles in the film would result in undesired pressure areas, e.g. later in the rolled up condition. If a carrier paper is connected to the adhesive film, this is drawn off in the area of the overlay of the respective thin glass blanks to be placed on top and, for example, taken up by a roll.
  • the contacting of the thin glass blanks with the adhesive film is preferably dry. However, if the thin glass blanks on the adhesive film aligned, corrected and can be raised several times if necessary, the contacting is also wet. In this case, the surfaces to be contacted of the thin glass blanks and of the adhesion film are moistened uniformly with a special assembly liquid or with a solution of water and a rinsing agent. After contacting the thin glass blanks, the adhesive film is pressed piece by piece, usually by means of one or more pressure rollers and wrinkles, the air and optionally the liquid streaked under the film. In order to ensure the best possible adhesion of the adhesive film and to avoid the formation of bubbles, in particular when using a pressure-sensitive adhesive, the contacting temperature is between 5 and 45 ° C, preferably at 10 ° C and 25 ° C.
  • the neutral phase between tensile and compressive stress in the rolled-up state is placed in the adhesive layer.
  • a permanent bending of the thin glass blanks during unrolling of the glass substrate tape is prevented.
  • the modulus of elasticity, the Poisson's number and the thickness of the adhesion film and the thin glass blanks are matched to one another.
  • D p is the thickness of the adhesive film
  • D g is the thickness of the thin glass substrates
  • v p is the Poisson number of the adhesive film
  • v g is the Poisson number of the thin glass substrates
  • E p is the modulus of adhesion of the adhesive film
  • E g is the modulus of elasticity of the thin glass substrates.
  • the invention further includes the use of a glass substrate tape for packaging or treating the first and / or second surface of the thin glass blanks in a continuous process.
  • a glass substrate tape for packaging or treating the first and / or second surface of the thin glass blanks in a continuous process.
  • the advantage here is that not the entire glass ribbon must be treated or refined accordingly and the glass waste is expensive in the subsequent cutting and possibly also no longer melted. Also, the costly cutting process on a glass band up to 1000 m long or longer at this stage of the process chain is eliminated and the customer can be supplied directly with ready-cut thin-glass masses.
  • Such preparation or treatment of one or both surfaces of the thin glass blanks are for example grinding, lapping, polishing, washing,
  • Printing a photolithographic process, the application of one or more coatings such as an antireflection coating, easy-to-clean coating, anti-fingerprint coating, Antiglare coating, an electrically conductive coating, a lamination process or the assembly with, for example an electronic component.
  • coatings such as an antireflection coating, easy-to-clean coating, anti-fingerprint coating, Antiglare coating, an electrically conductive coating, a lamination process or the assembly with, for example an electronic component.
  • FIG. 1 shows the execution of round (FIG. 1 a) and square (FIG. 1 b) thin-glass blanks on an adhesive film with full-area contact of a first or second thin-glass surface.
  • FIG. 2 shows the execution of round (FIG. 2a) and rectangular (FIG. 2b) thin-glass blanks on an adhesive film with contact of the respective entire edge region of a first or second thin-glass surface.
  • FIG. 3 shows the execution of round (FIG. 3a) and rectangular (FIG. 3b) thin-glass blanks on an adhesive film with contact between two opposite edge regions of a first and second thin-glass surface.
  • FIGS. 3c and 3d respectively show cross sections of the arrangements according to FIGS. 3a and 3b.
  • 1 a shows by way of example the embodiment of a glass substrate belt 1 a with positioned and fixed round thin-glass blanks 12 for production of wafers.
  • the thin glass blanks 12 are fixed on an adhesive film 14 with full-surface contact of a first thin glass surface 12 b.
  • the second thin glass surface 12a lies freely upwards and only comes into contact with the adhesive film 14, ie with the surface 14b of the adhesive film, when the glass substrate tape 1a is rolled up.
  • the thin glass blanks have a thickness of 0.06 mm.
  • the adhesive film 14 is a coextruded polyethylene adhesion film, as it is offered for example by the company. Molco Germany GmbH, Schrö under the name PE-CLING Protect.
  • the thickness of the adhesive film was 1 10 ⁇ m, so that the neutral phase between tensile and compressive stresses in the rolled-up state was positioned in the adhesive layer between the surface 14a of the adhesive film and the surface 12b of the thin glass blanks.
  • the adhesive film 14 has an adhesion side 14a with a static friction force greater than 20 N, which comes into contact with the first surface 12b of the thin glass blanks 12 and an opposite side 14b with a static frictional force of 0.5 to 0.7 N, which during winding or meandering Ming collapsing the glass substrate tape 1 a with the second surface 12 a of the thin glass blanks 12 comes into contact.
  • the Poisson's number of the adhesive film was 0.45
  • the Poisson's number of the thin glass blanks was 0.23
  • the modulus of adhesion of the adhesive film was 0.2 GPa
  • the modulus of elasticity of the thin glass substrates was 73 GPa.
  • the thickness of the adhesive film taking into account the following thicknesses of the thin glass blanks, was determined in accordance with the above-described relationships in further variants of the example of FIG. 1a as follows, wherein the neutral phase between tensile and compressive stresses in the rolled-up state is in each case in the adhesive layer between the surface 14a of the adhesive film and the surface 12b of the thin glass blanks.
  • FIG. 4 A dependence of different thicknesses of the adhesive film on the thickness of the thin glass substrates with different moduli of elasticity of different materials for the adhesive film is shown in FIG. 4.
  • the Poisson's number of the adhesion film was 0.45
  • the Poisson's number of the thin glass blanks was 0.23
  • the E Modulus of the thin glass substrates was 73 GPa.
  • Curve 41 shows the thickness dependence for an adhesion foil with an E modulus of 0.2 GPa, corresponding to the examples given above.
  • Curve 42 shows, by way of example, the thickness dependence for an adhesion foil having an E modulus of 0.3 GPa
  • curve 43 shows, by way of example, the thickness dependence for an adhesion foil with an E modulus of 0.5 GPa
  • curve 44 shows, by way of example, the thickness dependence for an adhesive film with an E-modulus of 0.7 GPa
  • the curve 45 shows an example of the thickness dependence for an adhesion film with an E-modulus of 2.5 GPa.
  • Fig. 1 b shows a corresponding glass substrate tape 1 b with positioned and fixed square thin glass blanks 13 for a production of display disks.
  • the thin glass blanks 13 with a thickness of 0.1 mm are fixed on an adhesive paper 15 with contact over the entire surface of a first thin glass surface 13b.
  • the second thin glass surface 13a is exposed upwards and comes into contact with the adhesive film 15 only when the glass substrate belt 1b is rolled up. with the surface 15b of the adhesive film.
  • the adhesive film 15 is an adhesive paper which consists of a paper coated with a polyethylene adhesive layer, as offered for example by the company. Molco Germany GmbH, Schire under the name PE-CLING paper.
  • the adhesive paper 15 contacts the first surface 13b of the thin glass blanks 13 with its coated side 15a.
  • the opposite non-adherent side 15b comes into contact with the second surface 13a of the thin glass blanks 13 during rolling up or meandering folding of the glass substrate tape 1b.
  • Fig. 2a shows, as in Fig. 1a by way of example the execution of a glass substrate tape 2a with positioned and fixed round thin glass blanks 22 for a production of wafers.
  • the thin glass blanks 22 with a thickness of 0.7 mm are fixed here on an adhesive film 24 with contact of the respective entire edge region of a first thin glass surface 22b.
  • the second thin glass surface 22a lies freely upwards and comes into contact with the adhesive film 24 only when the glass substrate tape 2a is rolled up.
  • the adhesive film 24 is a composite adhesive film Polyethylene adhesive film of polyethylene terephthalate (PET) and plasticized polyvinyl chloride (plasticized PVC) with a thickness of 290 ⁇ , as offered for example by the company.
  • PET polyethylene terephthalate
  • plasticized PVC plasticized polyvinyl chloride
  • the adhesive film 24 has an adhesive side 24a which comes into contact with the first surface 22b of the thin glass blanks 22 and an opposite side 24b which comes into contact with the second surface 22a of the thin glass blanks 22 when the glass substrate tape 2a is rolled up or meandered together.
  • a transport strip 26 is provided, which may optionally be reinforced with a carrier film.
  • the transport strip 26 serves to guide the glass substrate belt 2a.
  • the transport strip may be provided to support the guide, depending on the drive and steering mechanism also, as shown, with recesses such as cutouts 27 for engagement with a gear or toothed belt.
  • Coding fields 28 are provided between the thin-glass blanks 22, on which an encoding is applied, for determining the position and / or marking of the individual thin-glass blanks 22 in the production process.
  • the coding can be printed directly on or inscribable or printable fields, e.g. be attached in the form of labels on the adhesive tape therefor.
  • Fig. 2b shows a corresponding glass substrate tape 2b with positioned and fixed square thin glass blanks 23 for a production of display disks.
  • the thin glass blanks 23 are fixed on an adhesive film 25 with contact of the respective entire edge region of a first thin glass surface 23b.
  • the second thin glass surface 23a lies freely upwards and only comes into contact with the adhesive film 25 when the glass substrate tape 2b is rolled up.
  • the adhesive film 25 is a soft PVC adhesion film with a thickness of 150 ⁇ m, as described, for example, by the company Moico Kunststoff GmbH , Schire under the name Penstick® Protect is offered.
  • the adhesive film 25 has a static frictional force greater than 50 N.
  • each coding fields 29 are provided on soft coding is applied, for determining the position and / or labeling of the individual thin glass blanks 23 in the production process.
  • the coding can be printed directly or it can be inscribable or printable fields, for example in the form of labels for it to be attached to the adhesive film.
  • FIG. 3a shows, by way of example, the embodiment of a glass substrate belt 3a with positioned and fixed round thin-glass blanks 32 for the production of wafers.
  • the thin glass blanks 32 are fixed here on an adhesion film 34 with contact in each case between two mutually opposite edge regions of a first thin glass surface 32b.
  • the second thin glass surface 32a is exposed upward and the edge portion does not come into contact with the adhesive film 34 until the glass substrate tape 3a is rolled up, that is, when the glass substrate tape 3a is rolled up. with the cover sheet 36, which forms the lower part of the adhesive film 34.
  • the adhesive film 34 is a soft polyvinyl chloride (plasticized PVC) adhesive film having a static friction force greater than 50 N and a thickness of 150 ⁇ , as offered for example by the company. Molco Germany GmbH, Schrö under the name Penstick® Protect.
  • a non-adherent cover sheet 36 is attached with which the adhesive film 34 comes into contact with the second surface 32a of the thin glass blanks when winding up or meandering the glass substrate tape 3a.
  • Fig. 3c shows a cross section of the arrangement according to Fig. 3a.
  • Fig. 3b shows by way of example as Fig. 2b by way of example the execution of a glass substrate tape 3b with positioned and fixed square thin glass blanks 33 for a production of display disks.
  • the thin glass blanks 33 are here fixed on an adhesion film 35 with contact in each case between two mutually opposite edge regions of a first thin glass surface 33b and a second thin glass surface 33a.
  • a second adhesive film (not shown) is placed on the first adhesive film, so that the edge regions of the thin glass blanks to be fixed come to rest between the two adhesive films or, as shown here, the adhesion film 35 is folded upwards from the edge and onto the edge region of the thin glass surface 33a folded inwards so that it fixes with its surface 35a, the first surface 33b and the second surface 33a of the thin glass blanks.
  • the adhesive film 35 is a soft polyvinyl chloride (plasticized PVC) adhesive film with a thickness of 150 ⁇ m, as described, for example, by the company Molco Kunststoff GmbH, Schire under the name Penstick® Protect. is offered.
  • Adhesive film 35 has the same adhesive properties on both surfaces and has a static friction force greater than 50 N.
  • FIG. 3d shows a cross-section of the arrangement according to FIG. 3b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

L'invention concerne une bande de substrat en verre composée d'une pluralité de coupes en verre mince disposées et fixées sur une feuille adhésive. Les coupes en verre mince sont fixées sur toute la surface, avec l'ensemble de la zone marginale ou des zones marginales partielles, sur la feuille adhésive. La bande de substrat en verre peut comporter des bandes de transport latérales ou des champs de codage. Pour le stockage, la bande est pliée en forme de méandres ou enroulée et sert, en plus du transport et du stockage, de bande support dans des étapes de traitement des coupes en verre mince.
EP13745693.5A 2012-08-27 2013-08-08 Bande de substrat en verre Withdrawn EP2888104A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012215149.4A DE102012215149A1 (de) 2012-08-27 2012-08-27 Glassubstratband
PCT/EP2013/066631 WO2014032931A1 (fr) 2012-08-27 2013-08-08 Bande de substrat en verre

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EP2888104A1 true EP2888104A1 (fr) 2015-07-01

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US (1) US9662862B2 (fr)
EP (1) EP2888104A1 (fr)
JP (1) JP6009082B2 (fr)
KR (1) KR20150023512A (fr)
CN (1) CN104602908B (fr)
DE (1) DE102012215149A1 (fr)
TW (1) TW201420469A (fr)
WO (1) WO2014032931A1 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101531905B1 (ko) * 2014-01-09 2015-06-26 코닝정밀소재 주식회사 유리기판 보호패드 및 대면적 유리기판 보호패드 제조방법
DE102015001177A1 (de) 2014-03-10 2015-09-10 Schott Ag Verpackungseinheit
DE102014207792A1 (de) 2014-04-25 2015-10-29 Tesa Se Dünnglasverbund und Verfahren zum Lagern einer Dünnglasfolie
DE102014110268B4 (de) * 2014-07-22 2017-11-02 Osram Oled Gmbh Verfahren zum Herstellen eines optoelektronischen Bauelements
DE102014111037B4 (de) * 2014-08-04 2017-06-01 Osram Oled Gmbh Verfahren zur Herstellung einer organischen Leuchtdiode und organische Leuchtdiode
DE102014112490A1 (de) 2014-08-29 2016-03-03 Uwe Beier Vorrichtung und Verfahren zum Herstellen eines Substratverbundes, der zumindest ein erstes bandförmiges Substrat und ein zweites bandförmiges Substrat umfasst
DE202014105402U1 (de) * 2014-10-06 2015-01-08 Blacc Gmbh Mehrschichtkörper
DE102014221245A1 (de) * 2014-10-20 2016-04-21 Tesa Se Dünnglasfolienverbundbahn mit Versteifungsstreifen
CN106142761A (zh) * 2014-10-23 2016-11-23 凤凰集团有限公司 薄玻璃加工方法
DE102015120571A1 (de) * 2014-12-01 2016-06-02 Schott Ag Verfahren zum Trennen von Dünnglas
DE102014119333A1 (de) * 2014-12-22 2016-06-23 Schott Ag Hochfester Glasfilm mit besonderer Ausbildung der Kante sowie Verfahren zu dessen Herstellung
KR102329050B1 (ko) * 2015-04-17 2021-11-19 삼성디스플레이 주식회사 터치 패널 및 이의 제조방법
TW201713605A (zh) * 2015-08-21 2017-04-16 康寧公司 用於大量處理基板卷材之系統及方法
US11203183B2 (en) 2016-09-27 2021-12-21 Vaon, Llc Single and multi-layer, flat glass-sensor structures
US11243192B2 (en) 2016-09-27 2022-02-08 Vaon, Llc 3-D glass printable hand-held gas chromatograph for biomedical and environmental applications
US10821707B2 (en) * 2018-05-17 2020-11-03 Vaon, Llc Multi-layer, flat glass structures
US10274647B2 (en) 2017-05-18 2019-04-30 GM Global Technology Operations LLC Self-cleaning film system and article
WO2019027893A1 (fr) * 2017-07-31 2019-02-07 Corning Incorporated Article stratifié possédant une partie centrale non en verre et une enveloppe en verre et procédés associés
CN109180016A (zh) * 2018-10-12 2019-01-11 江西沃格光电股份有限公司 玻璃面板镀膜装片方法
CN109188587B (zh) * 2018-10-30 2021-01-22 京东方科技集团股份有限公司 一种彩色滤光片制作方法、彩色滤光片及显示设备
KR102244087B1 (ko) * 2019-08-19 2021-04-23 실리콘 디스플레이 (주) 라미네이션 지그 및 이를 사용하는 초박 유리 라미네이션 방법
CN111874455A (zh) * 2020-07-28 2020-11-03 光能动力(北京)科技有限责任公司 柔性太阳能组件的运输方式
CN113291620B (zh) * 2021-05-25 2022-11-15 成都宏明双新科技股份有限公司 一种镀镍金属片包装方法
CN115258411B (zh) * 2022-08-19 2023-09-19 江西若邦科技股份有限公司 一种剥离力稳定的纸质载带及其生产工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10012261A1 (de) * 2000-03-14 2001-09-27 Holger Hoefer Adhäsionsfolie
DE10323303A1 (de) * 2002-10-07 2004-04-15 Schott Glas Verbund aus einem Dünnsubstrat und einem Trägersubstrat mit lösbarem Verbindungsmittel
DE69914761T2 (de) * 1998-07-15 2005-01-13 Agfa-Gevaert Segmentiertes verbundglas

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089801A (en) 1957-05-27 1963-05-14 Minnesota Mining & Mfg Ultra-thin glass sheet
WO1987006626A1 (fr) 1986-05-02 1987-11-05 Deposition Technology, Inc. Feuilles fines de verre en rouleaux avec revetement applique par pulverisation et leur procede de production en continu
EP1048628A1 (fr) 1999-04-30 2000-11-02 Schott Glas Substrat de folie en verre revêtu avec une couche polymerisée
WO2000041978A1 (fr) * 1999-01-11 2000-07-20 Schott Display Glas Gmbh Substrats constitues de pellicule de verre mince, revetus de polymere
JP2000252342A (ja) * 1999-03-01 2000-09-14 Seiko Epson Corp 薄板の搬送方法および液晶パネルの製造方法
DE10064977C1 (de) 2000-12-23 2002-10-02 Schott Glas Vorrichtung zum Herstellen von dünnen Glasscheiben
KR100646907B1 (ko) 2001-12-14 2006-11-23 코닝 인코포레이티드 오버플로우 다운드로우 용융공정을 통한 시트 제조 장치및 방법
WO2004033197A2 (fr) * 2002-10-07 2004-04-22 Schott Ag Support pour substrats et composite constitue d'un substrat sur support et d'un substrat mince
US20110023548A1 (en) * 2009-07-29 2011-02-03 Garner Sean M Glass substrate comprising an edge web portion
JP2011121320A (ja) 2009-12-11 2011-06-23 Nippon Electric Glass Co Ltd ガラスフィルム積層体、該積層体のガラスロール、及びガラスロールの製造方法
TWI487677B (zh) * 2010-05-28 2015-06-11 Corning Inc 可撓玻璃的捲狀物及用於捲繞之方法
JP5874159B2 (ja) * 2010-08-31 2016-03-02 日本電気硝子株式会社 ガラス−樹脂積層体、およびそれを巻き取ったガラスロール、並びにガラスロールの製造方法
WO2013188260A2 (fr) * 2012-06-11 2013-12-19 Eveready Battery Company, Inc Procédé de fabrication d'une unité de combustible conditionnée pour un générateur d'hydrogène
JP6314136B2 (ja) * 2012-07-02 2018-04-18 コーニング インコーポレイテッド ガラス基板を加工する方法およびガラス器具
DE102015106050A1 (de) * 2015-04-21 2016-10-27 Schott Ag Glasrolle, Erzeugnis mit einer Glasrolle, Vorrichtung und Verfahren zu deren Herstellung

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69914761T2 (de) * 1998-07-15 2005-01-13 Agfa-Gevaert Segmentiertes verbundglas
DE10012261A1 (de) * 2000-03-14 2001-09-27 Holger Hoefer Adhäsionsfolie
DE10323303A1 (de) * 2002-10-07 2004-04-15 Schott Glas Verbund aus einem Dünnsubstrat und einem Trägersubstrat mit lösbarem Verbindungsmittel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2014032931A1 *

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US9662862B2 (en) 2017-05-30
TW201420469A (zh) 2014-06-01
JP6009082B2 (ja) 2016-10-19
CN104602908A (zh) 2015-05-06
CN104602908B (zh) 2016-11-09
KR20150023512A (ko) 2015-03-05
US20150224744A1 (en) 2015-08-13
JP2015534529A (ja) 2015-12-03
DE102012215149A1 (de) 2014-03-20
WO2014032931A1 (fr) 2014-03-06

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