EP2121778A1 - Multiple ply web supply roll for form, fill, seal packaging machinery - Google Patents
Multiple ply web supply roll for form, fill, seal packaging machineryInfo
- Publication number
- EP2121778A1 EP2121778A1 EP08726380A EP08726380A EP2121778A1 EP 2121778 A1 EP2121778 A1 EP 2121778A1 EP 08726380 A EP08726380 A EP 08726380A EP 08726380 A EP08726380 A EP 08726380A EP 2121778 A1 EP2121778 A1 EP 2121778A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- mateπal
- roll
- ply
- lateral edges
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/28—Wound package of webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H39/00—Associating, collating, or gathering articles or webs
- B65H39/16—Associating two or more webs
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/175—Plastic
- B65H2701/1752—Polymer film
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
Definitions
- the present invention provides a roll of container sidewall mate ⁇ al having a first ply and a second ply wound together about a common axis to form a stack of layers along a radius of the roll alternating between the first ply and the second ply
- the roll can have a leading edge of the first ply and the second ply fed into a vertical form, fill and seal machinery where the machinery forms a filled container having (1) the first ply and the second ply forming a first wall of the container and an opposed second wall is formed from a different supply of mate ⁇ al, or (2) the first ply and the second ply form both opposed walls of the container or (3) the first ply forms a first wall of the container and the second ply forms an opposed second wall of the container
- Collapsible plastic bags are often used to store liquid products such as chemicals, soft dnnk syrup, wine, fruit juices, medical fluids and food condiments
- the plastic bags are typically housed in a corrugated paperboard box to aid in the transporting, handling and dispensing of the product
- Such packaging systems are commonly referred to as "bag-in-box" packaging systems
- the plastic bags typically have sidewalls sealed along a pe ⁇ pheral seam to define a fluid containing chamber
- a spout or a fitment provides access to the fluid chamber for filling and dispensing the product within the bag
- Liquid filled containers are often provided using form, fill and seal equipment
- the present invention provides a roll of a multiple- ply mate ⁇ al for forming containers, a method for forming a spool of multiple-ply mate ⁇ al for use in packaging machinery, and a method for forming containers from such multiple-ply material.
- FIG. 1 is a perspective view of a roll of container wall material having consecutive layers of a first ply and a second ply;
- FIG. 2 is an end view of the roll of FIG. 1 ;
- FIG. 3 is a schematic view of one method for forming the roll of FIG. 1 from a first preformed roll of the first ply and a second preformed roll of the second ply;
- FIG. 4 is a schematic view of another method for forming the roll of FIG. 1 by combining together extrudates or laminates of the first ply and the second ply;
- FIG. 5 is a schematic view of another method for forming the roll of FIG. 1 by combining an extrudate or laminate of the first ply and a second ply on a preformed roll;
- FIG. 6 is a schematic view of a vertical form, fill and seal machinery
- FIG. 7 is a side elevation view in vertical cross section of a fitment
- FIG 8 is a perspective view of a fluid container having a fitment on a planar surface of a wall of the container;
- FIG. 9 is a perspective view of a fluid container having a fitment extending through a seam or end wall of the container;
- FIG. 10 is a cross-sectional view of a multiple layer film structure
- FIG. 1 1 is a cross-sectional view of a monolayer film structure. DETAILED DESCRIPTION OF THE INVENTION-
- FIG 1 shows a roll or spool 10 of material for fab ⁇ cating a container using packaging machinery such as vertical form, fill and seal machinery
- the roll 10 has a longitudinal axis 12 about which the mate ⁇ al 14 is wound
- the roll when viewed along a radius, the first ply and the second ply form consecutive stacked layers
- the roll is formed by placing a first ply of mate ⁇ al 20 into surface contact with a second ply 22 of mate ⁇ al and then winding both plies about the axis 12
- FIG 2 shows that the first ply 20 and the second ply 22 are coextensive and form stacked layers from the center of the roll 26 to a leading edge 28 of the roll
- the first ply or the second ply could be used exclusively as a starter section at the center of the roll or as an outer section at the leading edge of the roll without departing from the invention
- the outer section could be used to protect the roll from cosmetic or physical damage such as scratches or punctures and
- FIG 3 shows one method of forming the roll 10 by drawing the first web of mate ⁇ al from a roll 30 of preformed mate ⁇ al and the second web of mate ⁇ al from a second roll 32 of preformed matenal, positioning the first ply and the second ply to place their respective opposed lateral edges into registration with one another and then b ⁇ nging a planar surface 34 of the first ply into surface contact with the second ply and winding the stacked plies about the axis 12 to form roll 10
- the first ply is not connected to the second ply
- the first ply will be connected to the second ply along one or both pairs of each of the plies opposed lateral edges When both of each plies lateral edges are attached or connected to one another the first ply and the second ply form a tube of mate ⁇ al that is wound about the axis 12 to form the roll 10
- the first ply can be connected to the second ply through any suitable technique well
- FIG 4 shows an alternative method for forming the spool 10
- the first ply and the second ply 20, 22 are provided from equipment used to form the mate ⁇ al 40 such as an extrusion die, coextrusion die, lamination equipment, extrusion lamination, blown extrusion and the like and the first ply and the second ply are cooled, quenched, set or otherwise placed in a form suitable to be placed in surface contact with one another and wound into the roll 10
- FIG 5 shows yet another alternative embodiment for forming the spool 10 which is a combination of the embodiments shown in FIGS 3 and 4
- the first ply of mate ⁇ al 20 is drawn from the preformed roll of mate ⁇ al 30 and the second ply of mate ⁇ al is drawn from the mate ⁇ al forming equipment 40
- FIG 6 shows the use of the multiple-ply roll 10 of matenal for use in package forming machinery, and more particularly, in vertical form, fill, and seal (VFFS) machinery 50 for making containers 51 with a liquid content in the range of about 5 to 20 liters
- the VFFS machinery 50 has a support 52 for one supply roll of film mate ⁇ al 10 and optionally a second support 53 for a second supply roll of film mate ⁇ al 10' Guide rollers or other support structures are provided to support and guide a web of film drawn from the one or both of the supply rolls to direct the film mate ⁇ al along a feed path
- a fitment attaching station 54 is optionally provided in the feed path for attaching a fluid access member 60 to a planar surface of one of the webs of film mate ⁇ al 14 drawn from the supply roll 10
- FIG 7 shows the fluid access member or fitment 60 has a generally cylindrical wall 62 defining a fluid pathway 63 therein The wall 62 extends axially from a circular flange 64
- a film feed d ⁇ ve (not shown) is provided in the VFFS machinery 50 for displacing the film sheet or sheets along the feed path and through a pouch former 70
- the two sheets of film are brought into the pouch forming section 70 where the two sheets of mate ⁇ al are positioned to place the opposed lateral edges of each sheet of film mate ⁇ al into registration with one another and are welded together by heat welding apparatus 72 to form a tube disposed about a drop tube 74 having a liquid fill tube therein
- a horizontally extending sealing apparatus 76 forms a bottom seal for a pouch to be filled and a top seal for a filled pouch
- a severing apparatus 78 detaches the filled pouch from the pouch to be filled and the severed pouch drops from the container into an area adjacent the VFFS machinery 50 where the filled pouch will be prepared for shipping
- FIG 6 shows the filled containers 51 on an optional conveyor belt 80 where the filled containers are moved to an area away from the machinery 51 where they will be prepared for use or shipping
- the second supply roll of film 10' can be a multiple-ply roll having or a single ply roll If the second supply roll of film 10' is a multiple-ply roll it can have the same number or a different number of plies as the first supply roll, it can have the same types of materials or different mate ⁇ als as the first roll, it can have the same order of layers of material in the stack or a different order of materials in the stack and any combination of these va ⁇ ables
- the machinery can make both sidewalls of the multiple ply film or it can separate the stack of plies into a first ply or stack of plies and a second ply or stack of plies to make a first sidewall from the first ply or a stack of plies and a second sidewall from the second ply or stack of plies
- the film mate ⁇ al will either be folded or otherwise positioned to form a tubular web of mate ⁇ al about the filling tube 74 and filled and sealed as desc ⁇ bed above in reference to FIG 6
- the fluid filled into the container flows from a container 81 which is in liquid flow communication with the filling tube 74
- Liquids that are commonly filled in this fashion using a VFFS machinery include wine, soft dnnk syrup concentrate, juices, medical solutions among numerous others
- FIGS 8 and 9 show the filled container 51 having opposed walls 82 and 84 defining the fluid chamber 86
- the container 51 is shown having two opposed walls to form a pillow type container but it is contemplated that additional walls could be used to form gussets or to form a stand up container or the like as is well known to those skilled in the art
- the container 51 is shown with the optional fitment 60 that provides fluid access to the fluid chamber 86 from outside the container 51
- the fitment can be attached to the planar surface as desc ⁇ bed above in reference to FIG 6, or it can be attached in a separate operation It is also contemplated that the fitment could be modified to have a flange portion extending between the sidewalls of the container and being attached to both sidewalls and having a portion extending outside of the container as shown in FIG 9
- Suitable fitments 60 are well known to those skilled in the art and include fitments having portions for dispensing wine or docking to a line of a soda fountain, or that can be poured from, can be accessed through a straw or that can be directly drank from or that has a recloseable tap or the like These parts can be formed from polymeric mate ⁇ als using injection molding techniques or the like
- FIGS 10 and 1 1 show respectively a multiple layer film structure 100 and a monolayer film structure 102 that can be used to form a ply of the multiple-ply rolls or single-ply rolls of material 10, 10' discussed above.
- the multiple layer structure 100 can have from 2 to 10 layers, for example, and is shown in FIG. 10 having three layers. It should be understood that the individual layers of the multiple layer structure are attached or connected from one lateral edge to the other unlike the multiple ply structures material 14.
- tie layers are not shown, it is contemplated that tie layers may be positioned between layers to prevent delammation of the multiple layer structure or to provide other physical properties needed from the structure
- the multiple layer structure and the monolayer structure can be formed using polymer forming techniques well known to those skilled in the art including extrusion, coextrusion, extrusion lamination, lamination, blown extrusion and the like Suitable mate ⁇ al for forming a layer of the film includes polymeric material, paper and metal foil.
- Suitable polymeric material includes polyolef ⁇ ns, ethylene and lower alkyl acrylate copolymers, ethylene and lower alkyl substituted alkyl acrylate copolymers, ethylene vinyl acetate copolymers, polyimides, polysulfones, polycarbonates, polyethers, polyetheramides, polyethe ⁇ mides, polystyrenes, ethylene vinyl alcohols, ethylene vinyl acetates, polyvinyl chlorides, polyvinyledine chlo ⁇ des, polybutadienes, polyesters, polyamides, polystyrenes and styrene and hydrocarbon copolymers
- Suitable polyolef ⁇ ns include homopolymers and copolymers obtained by polymerizing alpha-olefins containing from 2 to 20 carbon atoms, and more preferably from 2 to 10 carbons Therefore, suitable polyolef ⁇ ns include polymers and copolymers of propylene, ethylene, butene-1, pentene-1, 4-methyl-l-pentene, hexene-1, heptene-1, octene-1 , nonene-1 and decene-1. Most preferably the polyolefin is a homopolymer or copolymer of propylene or a homopolymer or copolymer of polyethylene
- Suitable homopolymers of polypropylene can have a stereochemistry of amorphous, isotactic, syndiotactic, atactic, hemusotactic or stereoblock.
- the homopolymer of polypropylene is obtained using a single site catalyst.
- Suitable copolymers of propylene are obtained by polymerizing a propylene monomer with an ⁇ -olefin having from 2 to 20 carbons, hi a more preferred form of the invention, the propylene is copolymerized with ethylene in an amount by weight from about 1% to about 20%, more preferably from about 1 % to about 10% and most preferably from 2% to about 5% by weight of the copolymer
- the propylene and ethylene copolymers may be random or block copolymers
- the propylene copolymer is obtained using a single-site catalyst
- a blend of polypropylene and ⁇ -olefin copolymers wherein the propylene copolymers can vary by the number of carbons in the ⁇ -olefin
- the present invention contemplates blends of propylene and ⁇ -olefin copolymers wherein one copolymer has a 2 carbon ⁇ -olefin and another copolymer has a 4 carbon ⁇ -olefin It is also possible to use any combination of ⁇ -olefins from 2 to 20 carbons and more preferably from
- the present invention contemplates blends of propylene and ⁇ - olefin copolymers wherein a first and second ⁇ -olefins have the following combination of carbon numbers 2 and 6, 2 and 8, 4 and 6, 4 and 8 It is also contemplated using more than 2 polypropylene and ⁇ -olefin copolymers m the blend Suitable polymers can be obtained using a catalloy procedure
- High melt strength polypropylenes can be a homopolymer or copolymer of polypropylene having a melt flow index within the range of 10 grams/10 mm to 800 grams/10 mm , more preferably 30 grams/ 10 min to 200 grams/ 10 min, or any range or combination of ranges therein
- High melt strength polypropylenes are known to have free-end long chain branches of propylene units
- Methods of prepa ⁇ ng polypropylenes which exhibit a high melt strength characte ⁇ stic have been described in U S Patent Nos 4,916, 198, 5,047,485, and 5,605,936 which are incorporated herein by reference and made a part hereof
- One such method includes irradiating a linear propylene polymer in an environment in which the active oxygen concentration is about 15% by volume with high energy ionization energy radiation at a dose of 1 to 10 4 megarads per minute for a period of time sufficient for a substantial amount of chain scission of the linear
- Suitable homopolymers of ethylene include those having a density of greater than 0 915 g/cc and includes low density polyethylene (LDPE), medium density polyethylene (MDPE) and high density polyethylene (HDPE)
- LDPE low density polyethylene
- MDPE medium density polyethylene
- HDPE high density polyethylene
- Suitable copolymers of ethylene are obtained by polymerizing ethylene monomers with an ⁇ -olef ⁇ n having from 3 to 20 carbons, more preferably 3-10 carbons and most preferably from 4 to 8 carbons It is also desirable for the copolymers of ethylene to have a density as measured by ASTM D 792 of less than about 0 915 g/cc and more preferably less than about 0 910 g/cc and even more preferably less than about 0 900 g/cc Such polymers are oftentimes referred to as VLDPE (very low density polyethylene) or ULDPE (ultra low density polyethylene)
- VLDPE very low density polyethylene
- ULDPE ultra low density polyethylene
- the ethylene ⁇ -olefin copolymers are produced using a single site catalyst and even more preferably a metallocene catalyst system Single site catalysts are believed to have a single, stencally and electronically equivalent catalyst position as opposed to the Ziegler-Natta type catalysts which are known to
- Suitable copolymers of ethylene also include ethylene and lower alkyl acrylate copolymers, ethylene and lower alkyl substituted alkyl acrylate copolymers and ethylene vinyl acetate copolymers having a vinyl acetate content of from about 8% to about 40% by weight of the copolymer
- lower alkyl acrylates refers to comonomers having the formula set forth in Diagram 1
- the R group refers to alkyls having from 1 to 17 carbons.
- lower alkyl acrylates includes but is not limited to methyl acrylate, ethyl acrylate, butyl acrylate and the like.
- alkyl substituted alkyl acrylates refers to comonomers having the formula set forth in Diagram 2:
- and R 2 are alkyls having 1-17 carbons and can have the same number of carbons or have a different number of carbons.
- alkyl substituted alkyl acrylates includes but is not limited to methyl methacrylate, ethyl methacrylate, methyl ethacrylate, ethyl ethacrylate, butyl methacrylate, butyl ethacrylate and the like.
- Suitable polybutadienes include the 1,2- and 1 ,4-addition products of 1,3-butadiene (these shall collectively be referred to as polybutadienes).
- the polymer is a 1,2-addition product of 1,3 butadiene (these shall be referred to as "1 ,2 polybutadienes").
- the polymer of interest is a syndiotactic 1,2-polybutadiene and even more preferably a low crystallinity, syndiotactic 1 ,2 polybutadiene.
- the low crystallinity, syndiotactic 1,2 polybutadiene will have a crystallinity less than 50%, more preferably less than about 45%, even more preferably less than about 40%, even more preferably the crystallinity will be from about 13% to about 40%, and most preferably from about 15% to about 30%.
- the low crystallinity, syndiotactic 1,2 polybutadiene will have a melting point temperature measured in accordance with ASTM D 3418 from about 70 0 C to about 120 0 C
- Suitable resins include those sold by JSR (Japan Synthetic Rubber) under the grade designations JSR RB 810, JSR RB 820, and JSR RB 830
- Suitable polyesters include polycondensation products of di-or polycarboxyhc acids and di or poly hydroxy alcohols or alkylene oxides
- the polyester is a polyethylene terephthalate (PET) or PET ethylene glycol modified
- the polyester is a polyester ether
- Suitable polyester ethers are obtained from reacting 1 ,4 cyclohexane dimethanol, 1 ,4 cyclohexane dicarboxyhc acid and polytetramethylene glycol ether and shall be referred to generally as PCCE Suitable PCCE's are sold by Eastman under the trade name ECDEL
- Suitable polyesters further include polyester elastomers which are block copolymers of a hard crystalline segment of polybutylene terephthalate and a second segment of a soft (amorphous) polyether glycols Such polyester elastomers are sold by Du Pont Chemical Company under the trade name HYTREL®
- Suitable polyamides include those that result from a ⁇ ng-opening reaction of lactams having from 4-12 carbons
- This group of polyamides therefore includes nylon 6, nylon 10 and nylon 12
- Acceptable polyamides also include aliphatic polyamides resulting from the condensation reaction of di-amines having a carbon number within a range of 2-13, aliphatic polyamides resulting from a condensation reaction of di-acids having a carbon number within a range of 2-13, polyamides resulting from the condensation reaction of dimer fatty acids, and amide containing copolymers
- suitable aliphatic polyamides include, for example, nylon 6,6 nylon 6, 10 and dimer fatty acid polyamides
- the styrene of the polystyrene and the styrene and hydrocarbon copolymer includes styrene and the various substituted styrenes including alkyl substituted styrene and halogen substituted styrene
- the alkyl group can contain from 1 to about 6 carbon atoms
- substituted styrenes include alpha-methylstyrene, beta-methylstyrene, vinyl toluene, 3-methylstyrene, 4-methylstyrene, 4-isopropylstyrene, 2,4-dimethylstyrene, o- chlorostyrene, p-chlorostyrene, o-bromostyrene, 2-chloro-4-methylstyrene, etc Styrene is the most preferred
- the hydrocarbon portion of the styrene and hydrocarbon copolymer includes conjugated dienes
- Conjugated dienes which may be utilized are those containing from 4 to about 10 carbon atoms and more generally, from 4 to 6 carbon atoms Examples mclude 1,3- butadiene, 2-methyl-l,3-butadiene (isoprene), 2,3-dimethyl- l ; 3-butadiene, chloroprene, 1,3- pentadiene, 1,3-hexadiene, etc Mixtures of these conjugated dienes also may be used such as mixtures of butadiene and isoprene
- the preferred conjugated dienes are isoprene and 1,3- butadiene
- the styrene and hydrocarbon copolymers can be block copolymers including di block, t ⁇ -block, multi-block, star block, and mixtures thereof
- diblock copolymers include styrene-butadiene, styrene-isoprene, and the hydrogenated derivatives thereof
- t ⁇ block polymers include styrene-butadiene-styrene, styrene-isoprene- styrene, alpha-methylstyrene-butadiene-alpha-methylstyrene, and alpha-methylstyrene- iso ⁇ rene-alpha-methylstyrene and hydrogenated de ⁇ vatives thereof
- the selective hydrogenation of the above block copolymers may be earned out by a va ⁇ ety of well known processes including hydrogenation in the presence of such catalysts as Raney nickel, noble metals such as platinum, palladium, etc , and soluble transition metal catalysts
- Suitable hydrogenation processes which can be used are those wherein the diene- containing polymer or copolymer is dissolved in an inert hydrocarbon diluent such as cyclohexane and hydrogenated by reaction with hydrogen in the presence of a soluble hydrogenation catalyst
- Such procedures are described in U S Patent Nos 3,1 13,986 and 4,226,952, the disclosures of which are incorporated herein by reference and made a part hereof
- Particularly useful hydrogenated block copolymers are the hydrogenated block copolymers of styrene-isoprene-styrene, such as a styrene-(ethylene/propylene)-styrene block polymer
- styrene-isoprene-styrene such as a styrene-(ethylene/propylene)-styrene block polymer
- EB ethylene and 1-butene
- the conjugated diene employed is isoprene
- the resulting hydrogenated product resembles a regular copolymer block of ethylene and propylene (EP)
- KEATON G- 1652 which is a hydrogenated SBS t ⁇ block comp ⁇ sing 30% styrene end blocks and a midblock equivalent is a copolymer of ethylene and 1-butene (EB)
- SE hydrogenated block copolymer
- graft modified styrene and hydrocarbon block copolymers may also be desirable to use graft modified styrene and hydrocarbon block copolymers by grafting an alpha,beta-unsaturated monocarboxyhc or dicarboxyhc acid reagent onto the selectively hydrogenated block copolymers desc ⁇ bed above
- the block copolymers of the conjugated diene and the vinyl aromatic compound are grafted with an alpha.beta-unsaturated monocarboxyhc or dicarboxyhc acid reagent
- the carboxyhc acid reagents include carboxyhc acids per se and their functional de ⁇ vatives such as anhydrides, lmides, metal salts, esters, etc , which are capable of being grafted onto the selectively hydrogenated block copolymer
- the grafted polymer will usually contain from about 0 1 to about 20%, and preferably from about 0 1 to about 10% by weight based on the total weight of the block copolymer and the carboxyhc acid reagent of the grafted carboxyhc acid
- Specific examples of useful monobasic carboxyhc acids include acrylic acid, methacrylic acid, cinnamic acid, crotonic acid, acrylic anhydride, sodium acrylate, calcium acrylate and magnesium acrylate, etc Examples of dicarboxyhc acids
- the styrene and hydrocarbon block copolymer can be modified with an oil such as the oil modified SEBS sold by the Shell Chemical Company under the product designation KRATON G2705
- the layers can be formed from polymer blends of the components desc ⁇ bed above
- the multiple layer structure 100 will have a first solution contact layer 104 of a polyethylene, a second intermediate layer 106 of a polyamide or an ethylene vinyl alcohol copolymer and an outer layer 108 of a polyamide or an ethylene vinyl alcohol copolymer It is contemplated using tie layers (not shown) or adhesives between these layers
- the monolayer structure will be a polyethylene
- one of the first ply or the second ply will be fabricated from the multiple layer structure 100 and the other ply will be formed from the monolayer structure.
- one container wall will be formed from a two ply structure 20, 22 having the first ply 20 of a multiple layer structure. Even more preferably the multiple layer structure of ply 20 will have layers stacked in an order, from solution contact layer to outer layer, of polyethylene/tie/ethylene vinyl alcohol or polyamide/tie/ethylene vinyl alcohol or polyamide
- the second ply 22 will be of a monolayer structure 102 and even more preferably of polyethylene.
- the opposed wall of the container will be formed from a monolayer structure and even more preferably a polyethylene
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Making Paper Articles (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US96654007P | 2007-03-02 | 2007-03-02 | |
US11/901,305 US20090075032A1 (en) | 2007-09-17 | 2007-09-17 | Multiple ply web supply roll for form, fill, seal packaging machinery |
PCT/US2008/002827 WO2008109054A1 (en) | 2007-03-02 | 2008-03-03 | Multiple ply web supply roll for form, fill, seal packaging machinery |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2121778A1 true EP2121778A1 (en) | 2009-11-25 |
EP2121778A4 EP2121778A4 (en) | 2011-06-08 |
Family
ID=42830593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08726380A Withdrawn EP2121778A4 (en) | 2007-03-02 | 2008-03-03 | Multiple ply web supply roll for form, fill, seal packaging machinery |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2121778A4 (en) |
MX (1) | MX2009009042A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5419795A (en) * | 1993-07-29 | 1995-05-30 | W. R. Grace & Co.-Conn. | High slip packaging film with trapped print |
GB2308093A (en) * | 1995-12-13 | 1997-06-18 | Michael John Potter | Method and apparatus for laminating foils |
-
2008
- 2008-03-03 EP EP08726380A patent/EP2121778A4/en not_active Withdrawn
- 2008-03-03 MX MX2009009042A patent/MX2009009042A/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5419795A (en) * | 1993-07-29 | 1995-05-30 | W. R. Grace & Co.-Conn. | High slip packaging film with trapped print |
GB2308093A (en) * | 1995-12-13 | 1997-06-18 | Michael John Potter | Method and apparatus for laminating foils |
Non-Patent Citations (1)
Title |
---|
See also references of WO2008109054A1 * |
Also Published As
Publication number | Publication date |
---|---|
MX2009009042A (en) | 2010-06-25 |
EP2121778A4 (en) | 2011-06-08 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
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