Classifications

• • 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
  • B65D57/00—Internal frames or supports for flexible articles, e.g. stiffeners; Separators for articles packaged in stacks or groups, e.g. for preventing adhesion of sticky articles
  • B65D57/002—Separators for articles packaged in stacks or groups, e.g. stacked or nested
  • B65D57/003—Separators for articles packaged in stacks or groups, e.g. stacked or nested for horizontally placed articles, i.e. for stacked or nested articles
• • 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
• • 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
  • B65B23/00—Packaging fragile or shock-sensitive articles other than bottles; Unpacking eggs
  • B65B23/20—Packaging plate glass, tiles, or shingles
• • 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
  • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
  • B65B35/30—Arranging and feeding articles in groups
  • B65B35/50—Stacking one article, or group of articles, upon another before packaging
• • 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
  • B65B5/00—Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
  • B65B5/06—Packaging groups of articles, the groups being treated as single articles
• • 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
  • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
  • B65B61/20—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for adding cards, coupons or other inserts to package contents
  • B65B61/22—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for adding cards, coupons or other inserts to package contents for placing protecting sheets, plugs, or wads over contents, e.g. cotton-wool in bottles of pills
• • 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
  • B65D57/00—Internal frames or supports for flexible articles, e.g. stiffeners; Separators for articles packaged in stacks or groups, e.g. for preventing adhesion of sticky articles
  • B65D57/002—Separators for articles packaged in stacks or groups, e.g. stacked or nested
  • B65D57/003—Separators for articles packaged in stacks or groups, e.g. stacked or nested for horizontally placed articles, i.e. for stacked or nested articles
  • B65D57/004—Separators for articles packaged in stacks or groups, e.g. stacked or nested for horizontally placed articles, i.e. for stacked or nested articles the articles being substantially flat panels, e.g. wooden planks
• • 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
  • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
  • B65D65/38—Packaging materials of special type or form
  • B65D65/44—Applications of resilient shock-absorbing materials, e.g. foamed plastics material, honeycomb material
• • 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
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
• • 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
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
  • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
  • B65D81/127—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using rigid or semi-rigid sheets of shock-absorbing material

Definitions

• the present disclosure relates to packages and methods of packaging, and more particularly to packages and methods of packaging a plurality of glass sheets.
• Packaging is often used for shipping, handling and/or storage of a plurality of glass sheets.
• typical conventional packaging techniques may not be sufficient to protect the glass sheets from damage.
• a method of packaging a plurality of glass sheets comprising the step of (I) providing a plurality of glass sheets that each includes a thickness defined between two opposed outer surfaces of the glass sheet, and at least one peripheral edge defining an outer periphery of the glass sheet; (II) providing an outer housing including a first pressure member and a second pressure member; (III) stacking the plurality of glass sheets with an interleaf protective sheet positioned between a plurality of adjacent pairs of glass sheets to form a stack of glass sheets, wherein each interleaf protective sheet includes a sandwiched portion engaging facing outer surfaces of the corresponding pair of glass sheets and a outer portion that extends away from the sandwiched portion; (IV) bending the outer portion of a plurality of the interleaf protective sheets over a portion of the peripheral edge of one of the corresponding adjacent pair of glass sheets such that substantially all the edge surfaces of the glass sheets are protected by the bent portions of the interleaf protective sheets to discourage relative shifting of the glass sheets with respect to
• a plurality of the glass sheets bear a coating on at least one of the opposed outer surfaces, and at least some of the adjacent pairs of the glass sheets are stacked against each other with the coating located therebetween but without an interleaf protective sheet positioned therebetween.
• an interleaf protection sheet is positioned between each adjacent pair of glass sheets.
• the outer portion of each interleaf protective sheet is bent over the peripheral edge of one of the corresponding adjacent pair of glass sheets.
• a package comprises an outer housing including a first pressure member and a second pressure member.
• the package further comprises a stack of glass sheets sandwiched between the pressure members, wherein each pressure member applies a support pressure that is distributed over a corresponding one of a pair of outermost glass sheets of the stack of glass sheets.
• Each glass sheet of the stack of glass sheets includes a thickness defined between two opposed outer surfaces of the glass sheet, and at least one peripheral edge defining an outer periphery of the glass sheet.
• the stack of glass sheets includes an interleaf protective sheet positioned between each adjacent pair of glass sheets in the stack.
• Each interleaf protective sheet includes a sandwiched portion engaging facing outer surfaces of the corresponding pair of glass sheets and an outer portion that extends away from the sandwiched portion. The outer portion of each interleaf protective sheet is bent over a portion of the peripheral edge of one of the corresponding adjacent pair of glass sheets to discourage relative shifting of the glass sheets with respect to one another.
• the plurality of glass sheets are packaged such that a tensile stress at the peripheral edge is less than 200 MPa.
• each of the plurality of glass sheets has a length and a width that are both greater than 50 mm.
• the thickness of each of the plurality of glass sheets is less than 300 ⁇ .
• a protective layer is provided between a first one of the pair of outermost glass sheets and the first pressure member of the outer housing.
• an outer protective sheet is positioned between a second one of the pair of outermost glass sheets and the second pressure member of the outer housing.
• the outer protective sheet can be positioned such that a first portion of the outer protective sheet engages the second outermost glass sheet and an outer portion of the outer protective sheet is bent over a portion of the peripheral edge of the second outermost glass sheet to discourage a shifting movement of the second outermost glass sheet within the stack of glass sheets.
• a substantially rigid pressure plate can be biased away from the second pressure member of the housing to apply support pressure distributed over the second outermost glass sheet.
• a strap can be provided to bend the outer portion of each interleaf protective sheet.
• the strap can extend over the stack of glass sheets and can be fixed to the first pressure member.
• the support pressure provided by each pressure member can be substantially the same and uniform across the entire corresponding outer surface.
• each interleaf protective sheet can comprise paper or plastic.
• each of the plurality of glass sheets have substantially the same shape.
• each of the plurality of glass sheets can extend along a curved or flat plane.
• each of the plurality of glass sheets can extend along a curved plane while each interleaf protective sheet is not continuous with the sandwiched portion of each interleaf protective sheet only extending between at least two edge portions, or all of the edge portions of the facing outer surfaces.
• the outer housing encapsulates an interior area, wherein the stack of glass sheets are mounted within the interior area of the housing.
• the outer housing does not directly contact the peripheral edge of any of the glass sheets.
• the corresponding peripheral edges of each of the plurality of glass sheets are aligned with one another in a direction perpendicular to the outer surfaces of the glass sheets.
• none of the interleaf protective sheets are adhered to any of the glass sheets.
• the housing comprises molded foam or plastic.
• the interleaf protective sheets are successively staggered with respect to one another in a direction of the stack of glass sheets such that the outer portion of the interleaf protective sheets have alternating widths with respect to the corresponding peripheral edge of the glass sheet.
• the glass sheets are secured such that the outer periphery of the glass sheets are not subjected to a compressive stress exerted by the side walls of the housing.
• the glass sheets are secured by at least one strap mounted over the top surface of the stack of glass sheets.
• the outer periphery of the glass sheets are not subjected to a compressive stress exerted by the straps.
• FIG. 1 is a cross sectional view one example package
• FIG. 2 is a cross sectional view of another example package
• FIG. 3 is an example of a stack of glass sheets positioned with respect to a first pressure member of an outer housing of the package of FIG. 1;
• FIG. 4 is another example of a stack of glass sheets positioned with respect to a first pressure member
• FIG. 5 is an example of the stack of FIG. 3 with a substantially rigid pressure plate and spacer positioned over the stack;
• FIG. 6 is an example interleaf protective sheet positioned with respect to a curved glass sheet.
• FIG. 7 is a sectional view along line 7-7 of FIG. 5.
• FIG. 1 illustrates a package 101 including an outer housing 103 with a first pressure member 105 and a second pressure member 107.
• the outer housing 103 can comprise a wide range of materials such as molded foam or plastic although other materials may be used in further examples.
• the outer housing 103 can be constructed to insulate a plurality of housed glass sheets from surrounding environmental conditions such as vibrations, impact forces, thermal gradients, contamination or the like.
• the outer housing 103 is configured to encapsulate an interior area 109.
• the first pressure member 105 may include a first interior portion 109a and the second pressure member 107 may comprise a second interior portion 109b.
• the first and second pressure members 105,107 may be attached to one another such that the interior portions 109a, 109b form the interior area 109 encapsulated by the outer housing 103.
• one of the first and second pressure members 105, 107 simply comprise a lid with no interior portion. In such examples, the lid would close off the interior portion formed in the other pressure member to provide the encapsulated interior area.
• the first and second pressure members may cooperate with a third member to form the encapsulated area.
• the sidewall 113 of the outer housing 103 may be provided separately from the first and/or second pressure members 105, 107.
• the outer housing 103 may protect an interior area that is not encapsulated by the outer housing 103.
• the sidewall 113 may not be provided in examples of the disclosure. Such examples may be desirable to reduce material necessary to produce the package. Such examples may be desirable, for example, when the package does not require lateral protection from surrounding environmental conditions or where the package is housed in another outer package that provides such lateral protection.
• first and second pressure members 105,107 may be attached together.
• the outer housing 103 may be provided with a snapping connection 111 although buckles, tape, straps, adhesives or other attachment mechanisms may be provided in further examples in order to attach the pressure members together.
• the package 101 includes a stack 115 of glass sheets 117 that are sandwiched between the first and second pressure members 105, 107 to facilitate mounting of the stack 115 within the interior area 109 of the outer housing 103.
• Glass sheets 117 can comprise glass, glass ceramic, and/or ceramic substrates. These glass sheets 117 can optionally include one or multiple organic and/or inorganic layers or structures on one or both of its two opposed outer surfaces 117a, 117b.
• Each glass sheet 117 of the stack 115 of glass sheets includes a thickness "T" defined between the two opposed outer surfaces 117a, 117b of the glass sheet 117.
• the package 101 can be used to package glass sheets having various thicknesses, either together or separately. Moreover, the package 101 is capable of effectively packaging glass sheets having a thickness "T" of less than or equal to 300 ⁇ that may not be possible with other conventional packaging designs.
• Each glass sheet 117 further includes at least one peripheral edge 119 defining an outer periphery of the glass sheet 117.
• the glass sheet may include a single peripheral edge to form an outer periphery having the desired shape (e.g., circular, elliptical shape), two peripheral edges to form an outer periphery having other shapes (e.g., half circle) or three or more peripheral edges to form other desired shapes (e.g., polygonal shapes).
• the at least one peripheral edge of the glass sheet 117 includes four edges 119a-d forming a rectangular shape although square or other shapes may be provided in further examples.
• the package 101 is capable of effectively packaging glass sheets having a wide range of lengths and widths.
• each of the plurality of sheets can have a length "L” and a width "W” that are both greater than or equal to 50 mm.
• the length "L” x "W” can range from 120 mm x 100 mm up to 370 mm x 250 mm although other length/width dimensions (e.g., lm x lm) may be provided in further examples.
• package 101 can effectively package a plurality of glass sheets 117 that have a thickness "T" of less than or equal to 300 ⁇ and a length "L” and width "W” of greater than or equal to 50 mm.
• the glass sheets in the package can have a wide variety of shapes that are identical or different from one another.
• the glass sheets 117 all have substantially the same shape and extend along a flat plane.
• the glass sheets 117 comprise substantially flat glass sheets with opposed outer surfaces 117a, 117b that are substantially planar and parallel from one another.
• the glass sheets in the package can also vary in length "L” and/or width "W” or other dimensions, wherein the stack of glass sheets form a tiered configuration with glass dimensions that are successively smaller than one another in the direction of the stack.
• the sheets may be geometrically similar to one another but successively smaller in the direction of the stack to form a truncated pyramid shape when stacked together. In this way, no individual glass sheet would have a cantilevered portion or extend beyond any glass sheet positioned lower in the stack.
• the glass sheets can include other shapes in further examples.
• a package 201 includes a stack 203 of glass sheets 205 that are substantially the same shape and extend along a curved plane.
• the glass sheets 205 can have a cross section along the width "W" that is substantially curved such that the opposed outer surfaces 207a, 207b are curved with the first outer surface 207a having an upwardly convex shape and the second outer surface 207b having a downwardly concave shape.
• the glass sheets 205 can also have a cross section along the width "W" that is substantially curved such that the opposed outer surfaces 207a, 207b are also curved but the first outer surface 207a has upwardly concave shape and the second outer surface 207b has a downwardly convex shape (i.e., flipped over from the position illustrated in FIG. 6).
• the stack 115 of glass sheets 117 includes an interleaf protective sheet 121 positioned between each adjacent pair of glass sheets 117 in the stack 115.
• the interleaf protective sheet 121 can comprise a wide range of materials designed to protect adjacent glass sheets from damaging one another.
• the interleaf protective sheet 121 can be designed to minimize surface contact damage or surface contamination that may be caused by other glass sheets 117 or the interleaf protective sheet 121 itself.
• the protective sheet comprises paper or plastic (e.g., plastic film or sheet) designed to protect the respective glass sheet.
• the protective sheet can be comprised of a material with reduced fiber shedding during shipping.
• the interleaf protective sheet 121 can comprise a glassine paper as set forth in U.S. Patent Application Publication No. 2009/0308774 that is herein incorporated by reference in its entirety. Glassine paper can be defined as super-calendared paper manufactured principally from chemically-bleached wood pulps that have been beaten to secure a high degree of stock hydration.
• Glassine paper is generally grease resistant. Glassine paper is dense, which results in a paper having a high resistance to the passage of air and relatively impervious to the passage of water vapor when compared to other paper products. It is also smooth and transparent or semi-transparent. Glassine paper generally has a low inorganic content, which is generally present in other types of paper. Due to the lack of fillers, binders, resins and other additives, any organic contaminants are minimized, and stain formation on the glass surface is prevented. Inorganic contaminants present in the paper are generally locked within the paper by processing, which prevents subsequent scratching of the glass surface. Glassine paper can be manufactured so that is it translucent, white, or colored, and may also be made opaque by the addition of fillers.
• the interleaf protective sheets can be loosely or strongly adhered to one or both of the corresponding pair of glass sheets in the stack. Adhesion can be produced by covalent bonding, adhesives and/or electrostatics.
• a plastic film may be adhered to one side of the glass sheet. After unpacking, the film may be pealed off of the glass sheet. Such a design may be desirable to help prevent shifting of the interleaf protective sheets after formation of the stack.
• the interleaf protective sheet can comprise a permanent coating that is attached to the glass sheet.
• the interleaf protective sheets can comprise permanent or semi-permanent coatings to the glass sheet and intended to remain attached during subsequent handling or processing steps.
• interleaf protective sheets are shown, in further examples, undersized or size- matching interleaf sheets may be used in further examples.
• a strap positioned over the stack may be used to help control relative lateral motion of the stack or glass sheets within the stack.
• none of the interleaf protective sheets 121 are adhered to any of the glass sheets 117.
• Providing interleaf protective sheets 121 that are not adhered to the glass sheets 117 can simplify assembly of the stack.
• providing interleaf protective sheets 121 that do not adhere to the glass sheets 117 can simplify and reduce the costs when unpacking the glass sheets from the package 101.
• not adhering the glass sheets 117 can avoid residual organic materials on the surface of the glass sheets that may require further processing (e.g., washing with detergent or the like) to remove residual organic material, fibers or other materials that may remain on the glass sheet after removing the interleaf protective sheet.
• each interleaf protective sheet 121 includes a sandwiched portion 121a engaging facing outer surfaces 117a, 117b of a
• the corresponding pair of glass sheets can comprise a lower glass sheet 117 and an upper glass sheet 117 positioned immediately above the lower glass sheet.
• the facing outer surfaces of the corresponding pair of glass sheets can comprise an upper surface (see 117a) of the lower glass sheet 117 and the lower surface (see 117b) of the upper glass sheet 117.
• These facing surfaces of the corresponding pair of adjacent glass sheets can be designed to provide direct pressure to sandwich the portion 121a of the interleaf protective sheet 121 positioned therebetween.
• the outer portion 121b is not sandwiched between the facing outer surfaces and extends away from stacked array of glass sheets. Indeed, as shown, the outer portion 121b is a free standing portion that is cantilever supported by the sandwiched portion 121a. The free standing outer portion 121b is free to bend with respect to the sandwiched portion, and as shown, the outer portion 121b can be bent over a portion of the peripheral edge 119 of one of the corresponding adjacent pair of glass sheets 117 to discourage relative shifting of the glass sheets 117 with respect to one another.
• a bending crease 123 between the sandwiched portion 121a and the bent outer portion 121b can act as a shoulder to trap a corresponding corner of the peripheral edge 119.
• each one of the peripheral edges 119 can be provided with a
• the bending crease 123 comprises a relatively sharp bending crease although a more gradual curved bending crease may be provided in further examples.
• interleaf protective sheets without a bending crease.
• no bending crease may be provided in examples where the interleaf protective sheet comprises a protective coating to the glass sheet with minimum or no outer portion extending from the sandwiched portion.
• no bending crease may be provided in examples where the interleaf protective sheet comprises an undersized or size-matching interleaf protective sheet with little or no outer portion extending from the sandwiched portion.
• relative lateral shifting of the stack or the glass sheets relative to one another may be controlled by a strap overlying the stack similar or identical to the strap 131 discussed below.
• the interleaf protective sheet can be continuous, as shown in FIG. 1 such that the interleaf engages the entire surface portion 117a, 117b.
• each interleaf protective sheet may optionally be not continuous.
• the sandwiched portion of the interleaf can be designed to only extend between at least two edge portions. Indeed, due to the curved shape of the glass sheet, some shifting may be prevented by the curved nature of the glass sheets. As shown in FIG.
• the interleaf protective sheet 601 includes a sandwiched portion 601a and an outer portion 601b similar to the sandwich and outer portions 121a, 121b of the interleaf protective sheet 121 illustrated in FIG. 1.
• the interleaf protective sheet 601 is not continuous and only extends between two edge portions 605 of the outer surfaces 207a, 207b.
• the edge portions 605 comprise lateral edge portions that are substantially straight along the length "L" of the glass sheet 205.
• the interleaf protective sheet 601 may only extend between the lateral edge portions 607 that are curved along the width "W" of the glass sheet 205.
• the interleaf protective sheet 601 may be non-continuous and extend between both pairs of lateral edge portions 605, 607 along the length "L" and the width "W". In such examples, the interleaf protective sheet 601 can be non-continuous in the central sandwiched portion.
• each of the interleaf protective sheets 121 can be aligned with one another such that the outer periphery 301 of the glass sheets 117 substantially along the same projected footprint "P". As shown in FIG. 4, the interleaf protective sheets 121 can be successively staggered with respect to one another in a direction 401 of the stack of glass sheets such that the outer portion of the interleaf protective sheets have alternating widths Wi, W 2 with respect to the corresponding peripheral edge 119 of the glass sheet 117.
• the plurality of interleaf protective sheets 121 can comprise a first set of protective interleaf protective sheets having substantially the same protected first footprint "Pi” and a second set of protective interleave sheets having substantially the same protected second footprint "P 2 ", wherein the first projected footprint "Pi” is offset from the second projected footprint "P 2 ".
• Other staggering of the interleaf protective sheets 121 in a sequential pattern or more random variation is also possible in further examples. Staggering the interleaf protective sheets 121 may allow easier removal of the substrates from the package 101.
• the plurality of glass sheets 117 may be aligned with one another in a direction perpendicular to the outer surfaces of the glass sheets (e.g., the direction 401 of the stack of glass sheets).
• the glass sheets 117 can have the same projected footprint "P3". Providing the glass sheets 117 with the same projected footprint can help prevent stress on cantilevered portions of the glass sheets that may otherwise be present with sheets that are not aligned along the same projected footprint.
• an optional protective layer 125 can be provided between a first one 127a of a pair of outermost glass sheets 127a, 127b and the first pressure member 105 of the outer housing 103.
• an optional outer protective sheet 129 can be positioned between a second one 127b of the pair of outermost glass sheets 127a, 127b and the second pressure member 107 of the outer housing 103.
• the protective layer 125 and/or the outer protective sheet 129, if provided, can be formed of a material similar or identical to the interleaf protective sheet 121 described above.
• a first portion 129a of the outer protective sheet 129 engages the second outermost glass sheet 127b and an outer portion 129b of the outer protective sheet 129 may optionally be bent over a portion of the peripheral edge 119 of the second outermost glass sheet 127b to discourage a shifting movement of the second outermost glass sheet 127b within the stack 115 of glass sheets 117.
• the package 101 can also include a strap 131 that, in some examples, bends the outer portion 121b of at least one or each interleaf protective sheet 121.
• the strap 131 can be designed to inhibit lateral shifting of the stack 115 and/or glass sheets within the stack without bending the outer portion 121b of the interleaf protective sheets 121.
• the strap 131 can extend over the stack 115 of glass sheets 117.
• the strap can be fixed to the first pressure member 105.
• the strap 131 can be fixed by way of adhesive tape 133 although other mechanical fixing techniques may be used such as glue, pins, staples or the like.
• the strap 131 if provided, can be formed from a wide range of materials.
• the strap 131 comprises a strip of material similar or identical in composition as the interleaf protective sheet 121.
• each pressure member 105, 107 applies a support pressure that is distributed over a corresponding one of the pair of outermost glass sheets 127a, 127b of the stack 115 of glass sheets 117.
• the pressure is evenly distributed such that substantially the same pressure is applied to all portions of each glass sheet. Providing even pressure can avoid pressure differentials that may create undesired stress concentrations in the glass sheets.
• portions of the package 101 can include pressure surfaces that match the outer facing surfaces of the outermost glass sheets 127a, 127b. For example, in examples where the glass sheets 117 are flat, pressure surfaces 135, 137 may be substantially planar surfaces.
• the first pressure surface 135 can comprise a substantially planar surface of the first pressure member 105.
• the first pressure surface 209 can have a curved shape to match the curved shape of the corresponding outermost glass sheet 211a of a pair of outermost glass sheets 211a, 211b of a stack 213 of glass sheets 205.
• the outwardly facing surface of the first outermost glass sheet 211a is concave; therefore, the first pressure surface 209 comprises a convex surface that matches the concave surface of the outermost glass sheet 211a.
• the package 101 may optionally include a substantially rigid pressure plate 139 that is biased away from the second pressure member 107 of the outer housing 103 to apply support pressure distributed over the second outermost glass sheet 127b.
• the pressure is evenly distributed such that substantially the same pressure is applied to all portions of each glass sheet. Providing even pressure can avoid pressure differentials that may create undesired stress concentrations in the glass sheets.
• the substantially rigid pressure plate 139 can be provided with the pressure surface 137. As shown, the pressure surface 137 is substantially flat to match the substantially flat configuration of the glass sheets 117. As shown in FIG.
• a substantially rigid pressure plate 215 can be provided with a second pressure surface 217 that has a curved shape to match the curved shape of the corresponding outermost glass sheet 211b of a pair of outermost glass sheets 211a, 211b.
• the outwardly facing surface of the second outermost glass sheet 211b is convex; therefore, the second pressure surface 217 comprises a concave surface that matches the convex surface of the outermost glass sheet 211b.
• the rigid pressure plate 139 can distribute pressure substantially evenly across the 2-dimensional surface of the glass sheets 117.
• the rigid pressure plate 215 can either distribute pressure across the entire surface of the glass sheet 205 since the interleaf protective sheet illustrated in FIG. 2 comprises a continuous interleaf protective sheet.
• the rigid pressure plate 215 can distribute the pressure evenly across only the surfaces of the glass sheet 205 engaging the non-continuous interleaf protective sheets.
• the substantially rigid pressure plates 139, 215 may be biased away from the second pressure member 107 in a wide variety of ways.
• a spacer 141 can be provided to apply a biasing force to the substantially rigid pressure plates 139, 215.
• the spacer 141 can comprise a resilient member, such as a cloth, although elastomeric or other resilient materials may be used.
• the spacer 141 may comprise a coil spring or other resilient member.
• a single spacer 141 may be used although multiple spacers may be provided in accordance with further examples of the disclosure.
• the force is illustrated as being applied to a central portion of the substantially rigid pressure plates 139, 215. Due to the substantially rigid nature of the plates 139, 215, the compressive force is transmitted as an even bearing pressure across the corresponding outermost glass sheet.
• the stack 115 of glass sheets 117 can be arranged such that the outer housing 103 does not directly contact the peripheral edge 119 of any of the glass sheets 117. As such, the tensile stress at the peripheral edge 119 of the glass sheets 117 can be minimized, thereby avoiding undesired breakage of glass sheets within the package.
• the glass sheets 117 are packaged such that a tensile stress at the peripheral edge is less than 200 MPa, such as less than 100 MPa, such as less than 50 MPa.
• the glass stack can be assembled with a convex or concave shape.
• the tensile stress each peripheral edge of the curved glass sheets can be maintained less than 200 MPa, such as less than 100 MPa, such as less than 50 MPa.
• the curved nature of the glass sheets 205 may be induced by the package.
• the glass sheets 205 may be substantially planar glass sheets before packaging. Once engaging the concave and convex surfaces of the package, the glass sheets may be bent into the illustrated curved shape. Bending the sheets into the illustrated curved shapes can help prevent lateral shifting of the stack and/or glass sheets relative to one another. When unpackaged, the curved glass sheets may automatically flex back to the original flat configuration.
• the glass sheets may have a natural curved shape.
• the concave and convex surfaces of the package can be designed correspond to the curved dimensions of the glass sheet.
• a method of packaging a plurality of glass sheets will now be described with respect to the package 101 with the understanding that the method can be carried out substantially the same way with the package 201.
• the glass sheets 117 and outer housing 103 can be provided. Thereafter, plurality of glass sheets can be stacked. In one example the stack can be formed first and then transferred to the outer housing. In another example, the stack can be formed directly on one of the pressure members of the housing. For instance, referring to FIG. 3, the optional protective layer 125 can first be positioned over the pressure surface 135 of the first pressure member 105. Next, the outermost glass sheet 127a is positioned over the protective layer 125. An interleaf protective sheet 121 is then positioned over the upper surface of the outermost glass sheet 127a. Glass sheets 117 and interleaf protective sheets 121 are then alternatively stacked to form the stack 115 of glass sheets 117.
• the various numbers of glass sheets may be stacked in the above manner.
• the stack 115 includes twenty glass sheets although more or less glass sheets may be stacked in further examples.
• the optional outer protective sheet 129 is then positioned over the outer facing surface of the second outermost glass sheet 127b.
• FIG. 7 is a cross section along line 7-7 of FIG. 5 and illustrates one example strap technique that may be used in examples of the disclosure.
• the strap 131 comprises a first strap 701 extending over the stack 115 of glass sheets in the direction of the length "L" of the glass sheets 117.
• the first strap 701 is fastened with fasteners 703 to bend the outer portions of the outer protective sheet and interleaf protective sheets to extend over a portion of the opposed spaced apart pair of peripheral edges.
• the strap 131 can comprise a second strap 705 extending over the stack 115 of glass sheets in the direction of the width "W" of the glass sheets 117.
• the second strap 705 is also fastened with fasteners 703 to bend the outer portions of the outer protective sheet and interleaf protective sheets to extend over a portion of another opposed pair of spaced apart peripheral edges.
• the substantially rigid pressure plate 139 can then be placed over the stack 115 of glass sheets 117.
• the spacer 141 is placed over the substantially rigid pressure plate 139.
• the second pressure member 107 can then be clamped down such that the biasing member 141 transmits a force to the substantially rigid pressure plate 139.
• a snapping connection 111 can maintain the pressure members 105 and 107 clamped together with the stack 115 sandwiched therebetween. The pressure members thereby increase the friction force of the interleaf protective sheets 121 to help prevent shifting of the glass sheets 117 within the outer housing 103.
• the optional bent over outer portions 131b, 129b help further prevent shifting of the glass sheets relative to one another.
• the first and second pressure members 105, 107 can be designed to encapsulate an interior area 109 to protect the stack 115 of glass sheets 117 from external environmental conditions. Also, damage to the outer edges of the glass sheets can be avoided since the glass sheets are sandwiched between the pressure members of the outer housing such that the pressure members each apply a support pressure that is distributed over an outer surface of a corresponding one of the pair of outermost glass sheets of the stack of glass sheets. Moreover, tensile stress at the outer peripheral edges 119 can be reduced, thereby avoiding undesired breakage of the glass sheets.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Packaging Frangible Articles (AREA)
• Buffer Packaging (AREA)
• Wrapping Of Specific Fragile Articles (AREA)

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• 2011
  • 2011-11-30 JP JP2013542124A patent/JP5930485B2/ja not_active Expired - Fee Related
  • 2011-11-30 KR KR1020137016835A patent/KR101687443B1/ko not_active Expired - Fee Related
  • 2011-11-30 TW TW100144068A patent/TWI520892B/zh not_active IP Right Cessation
  • 2011-11-30 KR KR1020167034640A patent/KR101965946B1/ko not_active Expired - Fee Related
  • 2011-11-30 CN CN201180065781.7A patent/CN103796933B/zh not_active Expired - Fee Related
  • 2011-11-30 WO PCT/US2011/062552 patent/WO2012075089A1/en not_active Ceased
  • 2011-11-30 CN CN201611099586.7A patent/CN106364794B/zh not_active Expired - Fee Related
  • 2011-11-30 US US13/988,636 patent/US9321574B2/en not_active Expired - Fee Related
• 2016
  • 2016-03-17 US US15/073,280 patent/US9701461B2/en not_active Expired - Fee Related
  • 2016-04-22 JP JP2016085896A patent/JP6293195B2/ja not_active Expired - Fee Related

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