CN107107519A

CN107107519A - For the method by making cardboard packaging with the carton blank for being fastened to shrinkable films thereon

Info

Publication number: CN107107519A
Application number: CN201580070537.8A
Authority: CN
Inventors: E·利普斯
Original assignee: Dixie Consumer Products LLC
Current assignee: GPCP IP Holdings LLC
Priority date: 2014-12-23
Filing date: 2015-12-23
Publication date: 2017-08-29
Anticipated expiration: 2035-12-23
Also published as: CN107107519B; MX2017008522A; WO2016105559A1; CA2971840A1

Abstract

For the method by making container with the carton blank for being fastened to shrinkable films thereon.In one embodiment, it can be included in around cardboard substrate for making the method for container and apply adhesive, the cardboard substrate has reciprocal first edge and second edge and reciprocal 3rd edge and the 4th edge, wherein, described adhesive is at least partly around the area that there is no adhesive.Shrinkable films can be fastened on the cardboard by adhesive to produce carton blank.The shrinkable films may be configured to the amount shunk along first axle relative to along the amount shunk with the perpendicular second axis of the first axle into more than 1:1 ratio.The 3rd edge and the 4th imbricate can be made to form side wall, the side wall can include inner surface, and the inner surface includes shrinkable films.Bottom panel can be fastened at or near second edge on the side wall.

Description

For by making cardboard packaging with the carton blank for being fastened to shrinkable films thereon Method

Background

Technical field

Described embodiment relates generally to the method that cardboard packaging is made by carton blank.More specifically, institute The embodiment of description is related to the method for making cardboard packaging for the carton blank by being fastened with shrinkable films thereon.

Background technology

Cardboard be used to make various paper products, for example, plate, bowl and cup.Paper products can be by a variety of Different modes comes heat-insulated, so that insulating product is provided, for example, for hot drink or the heat insulation cup of cold drink.For example, paper products can be with By forming the air gap in the side wall of container come heat-insulated.The air gap can for example be located at the film for the inner surface for forming side wall Between the cardboard substrate for the outer surface for forming side wall.Film can be the shrinkable films (for example, can heat shrink films) that can be shunk, So as to form gap between film and cardboard substrate when film shrinks.

Typically, the carton blank attached by shrinkable films includes the outer of LLDPE or other polymers Coating and undercoating.When composite construction includes cardboard and shrink film to form heat-insulated container, potential defect is, by shrinking Convergent force caused by film may cause to be layered in the paperboard component of substrate.The cardboard being adhered to when film shrinks in shrink film is fine Tie up layer to peel off, so as to produce the effect commonly referred to as " stripped off ".Once film is peeled off, then paperboard fibres expose to the open air and will start to inhale Harvesting is the liquid (for example, coffee) in container.Liquid absorption and be transferred to for form container carton blank in it is overall On be referred to as " edgewick effect ".The absorption of liquid is likely to reduced the globality of carton blank, is that aesthetics aspect does not make us pleased It is happy and be generally not it is desirable that.

Therefore, for the improvement carton blank with the shrinkable films being fastened thereon and for by the improvement cardboard There are needs in the method that blank makes cardboard packaging.

The content of the invention

There is provided for the method by making cardboard packaging with the carton blank for being fastened to shrinkable films thereon.Extremely In a few specific embodiment, it can be included in around cardboard substrate for making the method for paper container and apply adhesive, it is described Cardboard substrate has reciprocal first edge and second edge and reciprocal 3rd edge and the 4th edge.It is described Adhesive can be at least partly around the area that there is no described adhesive.Can will be collapsible by described adhesive Film is fastened in the cardboard substrate to produce carton blank.The shrinkable films may be configured to what is shunk along first axle Measure relative to along the amount shunk with the perpendicular second axis of the first axle into more than 1:1 ratio.Described can be made Three edges and the 4th imbricate are to form side wall.The side wall can include：Inner surface including the shrinkable films, Outer surface including the cardboard substrate, the first edge and the second edge.Can at the second edge or Nearby bottom panel is fastened on the side wall.The first edge can be carried out crimping to form edge.

In at least one specific embodiment, the circumference week of cardboard substrate can be included in for making the method for paper container Application adhesive is enclosed, the cardboard substrate has reciprocal first edge and second edge and reciprocal 3rd side Edge and the 4th edge.Described adhesive can be at least partly around the area that there is no described adhesive.It can pass through Shrinkable films are fastened in the cardboard substrate to produce carton blank by described adhesive.The shrinkable films can be configured Into the amount shunk along first axle relative to along the amount shunk with the perpendicular second axis of the first axle into more than 1:1 Ratio.The 3rd edge can be made to be overlapped each other with the 4th edge.Can be by the 3rd edge and the 4th side Edge is heat sealed on each other to form side wall.Bottom panel can be fastened to the side wall at or near the second edge On.The first edge can be carried out crimping to form edge.

Further disclose the carton blank for making paper container.In at least one specific embodiment, the carton blank Cardboard substrate and shrinkable films can be included.The cardboard substrate can have reciprocal first edge and second edge with And reciprocal 3rd edge and the 4th edge.The a part of of the shrinkable films can be by being arranged in the cardboard substrate Adhesive between the film is fastened in the cardboard substrate.The shrinkable films may be configured to along first axle The amount of contraction is relative to along the amount shunk with the perpendicular second axis of the first axle into more than 1:1 ratio.

Brief description of the drawings

Fig. 1 depicts showing for the illustrative carton blank for making cup according to described one or more embodiments It is intended to.

Fig. 2 depicts the signal that 2-2 is intercepted along the blank described in Fig. 1 according to described one or more embodiments Property section view.

Fig. 3 depicts the perspective partial cut away view of illustrative dixie cup according to described one or more embodiments.

Fig. 4 depicts the side cross-sectional view of dixie cup according to described one or more embodiments, and the dixie cup has warp The film of contraction and formed or positioned at gap between the film and cardboard substrate through contraction.

Embodiment

Fig. 1 depicts the schematic diagram of the illustrative carton blank 100 for making cup according to one or more embodiments, And Fig. 2 depict along 2-2 diagrammatic cross-sectional view.Referring to Fig. 1 and Fig. 2, carton blank 100 can include first layer or Film 103 and the second layer or substrate 105.Film 103 and substrate 105 can use any appropriate method to be fastened on each other. For example, film 103 and substrate 105 can be combined at least in part using adhesive 115, couple, attach, engaging, fastening, it is attached Connect, connect or be otherwise fastened on each other.In another example, film 103 and substrate 105 can make at least in part Combined to combine, couple, attach, engage, fasten, be attached, connect or be otherwise fastened on each other with ultrasonic.One In individual or multiple embodiments, film 103 can be shrinkable films, and substrate 105 can be cardboard substrate.In order to simplify and be easy to Illustrate, embodiment will be referred to further shrinkable films 103 and cardboard substrate 105 to be described provided herein.When substrate 105 When being cardboard substrate, carton blank 100 can be formed as paper products, for example, bowl, plate, container, pallet, platter, deep dish Meat and fish dishes container, trough of belt product or cup.Term " paper products ", " paper container ", " paperboard products " and " cardboard packaging " are intended to can Exchange.In order to simplify and simple illustration, provided herein embodiment dixie cup will be referred to further to be described.

Carton blank 100 can have first edge or " top " edge 107, second edge or " bottom " edge 109, the Three edges or " left side " edge 111 and the 4th edge or " right side " edge 113.The concrete shape of carton blank 100 can at least portion Ground is divided to depend on the specific container to be made by carton blank 100.For example, the carton blank 100 described in Fig. 1 has arc The first and second edges 107,109 and straight line the third and fourth edge 111,113, wherein the first and second edges 107, 109 is generally opposite each other and the third and fourth edge 111,113 is generally opposite each other.

Adhesive 115 can be arranged between shrinkable films 103 and cardboard substrate 105.For example, shrinkable films 103 can be with Pass through the area or at least a portion in region in the circumference (for example, edge 107,109,111 and 113) along cardboard substrate 105 Around adhesive 115 be fastened in cardboard substrate 105.In at least one example, adhesive 115 can be surrounded or along One edge 107, second edge 109, the 3rd edge 111 and the 4th edge 114 apply, so that in the periphery of cardboard substrate Form the band of adhesive 115.As used in this, term " band " refers to generally thin and generally flat material bands, For example, the generally thin and generally flat band of adhesive 115.

The 4th edge 113 can be extended to from the 3rd edge 111 and towards the second side along the adhesive 115 of first edge 107 Edge 109 extends to form the Part I 116 of the band of adhesive 115.Can be from the 3rd side along the adhesive 115 of second edge 109 Edge 111 extends to the 4th edge 113 and towards first edge 107 extended to form the Part II 117 of the band of adhesive 115.Along The adhesive 115 at three edges 111 can extend to the Part II of the band of adhesive 115 from the Part I 116 of the band of adhesive 115 117 and extend to form the Part III 118 of the band of adhesive 115 towards the 4th edge 113.Along the adhesive 115 at the 4th edge 113 The Part II 117 of the band of adhesive 115 can be extended to from the Part I 116 of the band of adhesive 115 and prolong towards the 3rd edge 111 Stretch to form the Part IV 119 of the band of adhesive 115.Therefore, Part I 116, Part II 117, Part III 118 and Four parts 119 can form the continuous band of adhesive 115 in the periphery of cardboard substrate 105.

Part I 116, Part II 117, Part III 118 and the Part IV 119 of the band of adhesive 115 can be surrounded At least partly around without or there is no region or the area 120 of adhesive 115.For example, shrinkable films 103 with Area 120 between cardboard substrate 105 can be no or there is no adhesive 115, so that when shrinkable films 103 shrink Shrinkable films 103 can be moved freely away from cardboard substrate 105.When carton blank 100 has been formed into container and can When shrink film 103 is shunk, gap can be formed between film 103 and cardboard substrate 105, such as be begged in more detail referring to Fig. 4 By and description.As shown in fig. 1 and 2, along first edge 107, second edge 109, the 3rd edge 111 and the 4th side The adhesive 115 of edge 113 can be at the outward flange of cardboard substrate 105 or circumference.However, one or more other real Apply in example, along the viscous of at least one of first edge 107, second edge 109, the 3rd edge 111 and/or the 4th edge 113 Mixture 115 can be from corresponding edge retraction.For example, in first edge 107, second edge 109, the 3rd edge 111 and/or Four edges 113 and may surround or at least partly around area 120 adhesive 115 can be positioned between without or it is basic The upper second area without adhesive 115.

In one or more embodiments, shrinkable films 103 can be adapted or be configured to, when shrinkable films 103 shrink When, in the first direction or the amount shunk of first axle with along the second direction perpendicular with first direction or first axle or second The amount that axis shrinks is compared to bigger.For example, shrinkable films 103 may be configured to along the 3rd edge 111 for passing through carton blank The amount shunk with the first axle that the 4th edge 113 extends with along through first edge 107 and second edge 109 and perpendicular to the The amount that the second axis of one axis extension is shunk is compared to bigger.It is configured to when shrinkable films 103 shrink on first axle The amount of the contraction shrinkable films 103 bigger relative to the amount shunk in second axis can be used for being formed suitable for making cardboard The blank 100 of product, in the paperboard products, with except use be configured in the first direction with both second directions Remaining all identical contrast blank outside the shrinkable films of substantially the same amount is shunk to compare, when shrinkable films 103 shrink, Shrinkable films 103 have from cardboard substrate 105 along a small amount of to being peeled back to take off of the 3rd edge 111.It is configured on first axle The amount of the contraction shrinkable films 103 bigger relative to the amount shunk in second axis can be also used for being formed suitable for making paper The blank 100 of slab products, in the paperboard products, with being configured in the first direction and a second direction except using Remaining all identical contrast blank outside the shrinkable films of substantially the same amount is shunk to compare, when shrinkable films 103 shrink, Shrinkable films 103 are with reduced release or otherwise untie the trend that edge is crimped.

In one or more embodiments, the amount or degree phase shunk along first axle are configured in shrinkable films 103 It is configured to be more than along the ratio between the amount shunk with the perpendicular second axis of first axle for shrinkable films 103 1:1.For example, being configured in the amount that shrinkable films 103 are configured to shrink along first axle relative to shrinkable films 103 along Ratio between the amount that two axis shrink can be with scope from as little as about 1.05:1st, about 1.1:1st, about 1.2:1st, about 1.3:1st, about 1.6: 1 or about 2:1 to up to about 2.5:1st, about 3.5:1st, about 5:1st, about 7:1st, about 10:1st, about 20:1st, about 30:1st, about 40:1 or about 50:1 or more.In another example, the amount shunk along first axle is configured to relative to collapsible in shrinkable films 103 Film 103 is configured to ratio between the amount shunk along second axis can be with scope from as little as about 1.05:1st, about 1.1, about 1.5, Or about 2:1 to up to about 25:1st, about 35:1st, about 45:1st, about 60:1st, about 80:1st, about 90:1st, about 100:1 or about 150:1 or more It is many.

In one or more embodiments, shrinkable films 103 can be subjected to one or more predetermined trigger situations or bar Shunk during part.For example, shrinkable films 103 can be can heat shrink films, i.e. the film shunk when being heated to sufficient temp.Example Such as, shrinkable films 103 can be heated to about 40 DEG C or more, about 80 DEG C or more, about 90 DEG C, about 100 DEG C or more Shunk during temperature.In at least one example, film 103 can shrink when being exposed to hot liquid.In at least one other reality In example, film 103 shrinks when can be heated in an oven by being contacted with hot gas stream or other heater meanses.At least In one other example, film 103 can when heated, when being exposed to infrared light, when being exposed to microwave, be exposed to Shunk during any other appropriate triggering situation or in its any combinations.

Shrinkable films 103 can be uniaxial orientation or biaxially oriented.In at least one instantiation, shrinkable films 103 can be arranged to shrink in a lateral direction relative to machine direction it is a greater amount of it is bidirectional oriented can heat-shrinkable polymeric Thing film.In at least one instantiation, shrinkable films 103 can be arranged to relative to machine direction in a lateral direction That shrinks a greater amount of unidirectional orientations can heat-shrinkable polymeric thing film.Shrinkable films 103 can be monofilm or multilayer film.Multilayer film 103 can have 2 layers, 3 layers, 4 layers, 5 layers, 6 layers, 7 layers, 8 layers or more layers.Film 103 can include core layer or intermediate layer with And one or more outer layers or epidermis (for example, the first outer layer and second outer layer).Film 103 can include core layer or centre Layer, one or more articulamentums and one or more outer layers.For example, film 103 can include core layer, be disposed in core The first articulamentum and the second articulamentum, the first outer layer for being disposed on the first articulamentum on the two opposite sides of layer and by It is arranged in the second outer layer on the second articulamentum.

Shrinkable films 103 can be or can include any appropriate film.For example, shrinkable films 103 can be or can be with Including polyethylene film, polypropylene screen, polyethylene terephthalate film, cellophane membrane, PA membrane or its any combinations.Another In one example, shrinkable films 103 can be or can include butene polymers, ethene polymers, high density polyethylene (HDPE) (HDPE) polymer, medium density polyethylene (MDPE) polymer, low density polyethylene (LDPE) (LDPE) polymer, linear low density polyethylene Alkene (LLDPE), propylene (PP) polymer, isotactic polypropylene (iPP) polymer, high-crystallinity polypropylene (HCPP) polymer, ethene- Propylene (EP) copolymer, ene-propylene-butene (EPB) trimer, propene-1-butene (PB) copolymer, ethylene elastomer, ethene Base plastic body, propylene elastomeric, with and combinations thereof or blend.In another example, shrinkable films 103 can be or can be with Including polyethylene, polypropylene, polyvinyl chloride (PVC), polymethylpentene, PB Polybutene-1, polyolefin elastomer, polyisobutene, second Alkene acrylic rubber or its any mixture or combination.

Polyolefin film can also include one or more additives.Illustrative additive can include but is not limited to viscosify Agent, wax, functionalized polymer (for example, acid modified polyolefin and/or anhydride modified polyolefin), antioxidant, oil, bulking agent, Filler, adjuvant, help binder, plasticizer, low-molecular weight polymer, blocking agent, anticaking agent, antistatic additive, releasing agent, Anti stick additive, colorant, dyestuff, pigment, processing aid, UV stabilizer, heat stabilizer, nertralizer, lubricant, surface-active Agent, nucleator, softening agent, rubber, optical brightener, colorant, diluent, viscosity modifying agent, oxidized polyolefin and its What combination or mixture.

Resulting individual layer and/or the gross thickness of multilayer shrinkable films 103 can change.For example, about 5 μm to about 50 μm or About 10 μm to about 30 μm of total film thickness goes for most cardboard packagings.In another example, shrinkable films 103 can have There is the thickness from as little as about 5 μm, about 10 μm or about 15 μm to up to about 20 μm, about 25 μm, about 30 μm or about 35 μm.At one Or in multiple embodiments, the thickness of shrinkable films 103 can be enough to reduce or prevent shrinkable films 103 from rupturing, tearing, ftractureing, Or otherwise form hole through it.

In one or more embodiments, the surface area of shrinkable films 103 can be shunk from initial or initial surface or Be reduced to its value be based on initial or initial surface be about 5%, about 10%, about 15%, about 20%, about 25%, about 30%, about 35%th, about 40%, about 45%, about 50%, about 55% or about 60% the second or final surface area.For example, shrinkable films 103 Surface area its value can be shunk or be reduced to from initial or initial surface is about 10% to about 30%, about 15% to about 30%th, about 8% to about 20%, about 15% to about 35%, about 12% to about 33%, about 25% to about 35% or about 10% to about 40% the second or final surface area.In another example, with about 100cm²The heat shrink films of surface area be subjected to about It can be reduced during 40 DEG C to about 100 DEG C of temperature to about 95cm², about 90cm², about 85cm², about 80cm², about 75cm², about 70cm²、 About 65cm², about 60cm², about 55cm², about 50cm², about 45cm²Or about 40cm².In at least one instantiation, shrinkable films 103 surface area is heated to that about 30% to about 45%, about 35% can be shunk during about 102 DEG C of temperature within the time of ten minutes To about 50%, about 35% to about 45%, about 40% to about 50%, about 45% to about 55%, about 50% to about 60% or about 40% To about 60% amount.The shrinkage factor of shrinkable films 103 can be measured according to ASTM D1204.

As illustrated in fig. 1, adhesive 115 can be arranged in along the circumference of carton blank 100 shrinkable films 103 with Between cardboard substrate 105.It is disposed between shrinkable films 103 and cardboard substrate 105 and along first edge 107, second edge 109th, the 3rd edge 111 and the adhesive 115 of the 4th edge 113 arrangement with or the width of " tree lace " can be with scope from as little as about 1mm, about 2mm or about 3mm are to up to about 5mm, about 10mm, about 20mm or about 30mm or more.

Along each edge 107,109,111 and 113 of cardboard substrate 105 adhesive 115 with or the width of tree lace can be with It is identical or different relative to each other.In other words, the width of the Part I 116 of the band of adhesive 115, the width of Part II 117, The width of Part III 118 and the width of Part IV 119 can be identical or different relative to each other.For example, along first edge The width of 107 band of adhesive 115 can be less than width along the band of adhesive 115 of second edge 109, less than along the 3rd edge The width, and/or the width less than the band of adhesive 115 along the 4th edge 113 of 111 band of adhesive 115.In another example In, along the 3rd edge 111 the band of adhesive 115 width can be less than along first edge 107 the band of adhesive 115 width, Less than the width, and/or the width less than the band of adhesive 115 along the 4th edge 113 of the band of adhesive 115 along second edge 109 Degree.In another example, the bonding along first edge 107 can be less than along the width of the band of adhesive 115 at the 4th edge 113 The width of the band of agent 115, the width less than the band of adhesive 115 along second edge 109, and/or less than along the viscous of the 3rd edge 111 The width of the band of mixture 115.In another example, it can be less than along the 3rd along the width of the band of adhesive 115 of first edge 107 The width of the band of adhesive 115 at edge 111, the width along the adhesive tape at the 3rd edge can be less than along the 4th edge 113 The width of the band of adhesive 115, the width along the adhesive tape at the 4th edge can be less than the adhesive 115 along second edge 109 The width of band.

Adhesive 115 can use the combination of any appropriate method or method well known in the prior art can be applied to In shrink film 103 and/or cardboard substrate 105 with provide can without or there is no the area 120 of any adhesive 115. For example, adhesive 115 can via sprinkling, brushing, aniline printing, rotogravure printing, hectographic printing, silk-screen printing or its Any appropriate painting method is used in cardboard substrate 105.For by adhesive 115 be applied to shrinkable films 103 and/or Proper method in cardboard substrate 105 is additionally may included in U.S. Patent number：6,536,657；6,729,534；7,464,856； 7,614,993；7,600,669；7,464,857；7,913,873；7,938,313；7,513,386；7,510,098；7,841, 974；8,622,232 and U.S. Patent Application Publication No.：2011/0031305；2012/0312869；In 2013/0341387 Those methods for discussing and describing.

Adhesive 115 can be single or single-component adhesive or glue.As used herein, term " individual components " and " one-component " refer to adding when being used in combination with " adhesive " or " glue " curing agent, catalyst, accelerator or Make the adhesive or adhesive system of curable other the required cure components of adhesive or reagent.In other words, adhesive 115 can With including two or more different compositions, but adhesive may belong to without by second of composition added to adhesive with shape Into the type of curable adhesive.In this way, adhesive 115 can be into week, Cheng Yue or even adult ground stable storage, and one Adhesive 115 is applied on first layer or the second layer by denier, and adhesive 115 can just solidify, without curing agent, catalyst, Accelerator or other solidified reagents.

Adhesive 115 can be or can include polyethylene vinylacetate or any other appropriate adhesive or bonding Agent composition.Adhesive 115 can include one or more additives.Illustrative additive can include but is not limited to it is a kind of or A variety of tackifier.Appropriate tackifier can include but is not limited to ethyl para toluene sulfonamide.In one or more embodiments, If it exists, the amount of additive (for example, tackifier) can the gross weight scope based on additive from as little as about 1wt%, About 3wt% or about 5wt% are to up to about 10wt%, about 12wt% or about 15wt%.

Being suitable as the commercially available adhesive of the adhesive 115 of the above and elsewhere herein discussion and description can wrap Include but be not limited to commercially available from Henkel Corp.FB 9192With FB 9080It is believed thatFB 9192With FB 9080Adhesive is plastic of poly vinyl acetate resin, whereinFB 9192Including the ethyl pair for about 5wt% to the about 10wt% amount added based on adhesive gross weight Toluenesulfonamide (tackifier).

The second layer 105 can be or can include that any paper board material for expecting paper container can be formed.It should be noted that The second layer 105 can be or can include the material of non-cardboard or non-paper substrate, and such as one or more polymer are (for example, polyene Hydrocarbon) and/or metal (for example, aluminium).In one or more embodiments, it is adaptable to be used as the second layer or the paper sheet of substrate 105 The basis weight scope that material can have is every square metre of cardboard substrate from as little as about 163 grams, about 210 grams or about 275 grams to height To about 325 grams, about 400 grams or about 500 grams.In one or more embodiments, paper board material can have scope from as little as about 175 μm, about 225 μm or about 250 μm to up to about 350 μm, 450 μm, about 600 μm, about 750 μm or about 1,000 μm of thickness.

If the second layer 105 is or including cardboard, cardboard can coat or be not coated with one or more additional materials. For example, cardboard can be uncoated, for example, without wax, clay, polyethylene and other coating materials.In another example, Cardboard can be or can include being coated with one or more waxes, one or more clay and/or one kind on one or both sides Or the cardboard of a variety of polyolefin.For example, cardboard can use any appropriate technique to apply coated with polyethylene.In an example In, polyethylene coating can be applied on cardboard via extrusion process.Polyethylene and/or other polymers material can be applied It is layed onto on cardboard that resistant to liquid characteristic is provided and/or heat-sealable coating is used as.It can be used for the appropriate polymerization for coating cardboard Thing material can include but is not limited to polyethylene, polypropylene, polyester or its any combinations.If cardboard is coated with material (example Such as, wax or polymeric material), then coating can have scope from as little as about 0.002mm, about 0.01mm or about 0.1mm to up to About 0.15mm, about 0.2mm or about 0.35mm thickness.

May serve as the commercially available paper board material of the second layer 105 can include but is not limited to solid bleached sulfate (SBS) cup paper, bleaching original plate, do not bleach original plate, regeneration bleached board, regenerate non-bleached board or its any combinations.Example Such as, it may serve as from Georgia-Pacific Co., Ltd (Georgia-Pacific LLC) commercially available SBS cup papers The second layer 105.

In one or more embodiments, one of shrinkable films 103 and/or the second layer 105 (for example, cardboard substrate) or At least a portion on multiple surfaces can be aoxidized via sided corona treatment and/or flame discharge processing.Make shrinkable films 103 and/ Or the surface oxidation of the second layer 105 can increase or raise the surface energy of treated surface.In one or more embodiments, Shrinkable films 103 can have greater than about 30 dynes/cm, greater than about 35 dynes/cm, greater than about 38 dynes/cm, greater than about 40 to reach Cause/cm, greater than about 42 dynes/cm, greater than about 44 dynes/cm or greater than about 46 dynes/cm surface energy are (through processing or not Processing).In at least one embodiment, the surface of the contact adhesive 115 of shrinkable films 103, the contact bonding of the second layer 105 The surface of agent 115, and/or the surface that can be coated with ink of the second layer 105 can be subjected to corona and/or flame treatment.

Method for being fastened to shrinkable films 103 in cardboard substrate or the second layer 105 can be included adhesive 115 It is applied on shrinkable films 103 and/or the second layer 105.Shrinkable films 103 and the second layer 105 can be in contact with each other so that bonding Shrinkable films 103 can be fastened on the second layer 105 by agent 115 at least in part.In one or more embodiments, it is applied in The amount of adhesive 115 on to shrinkable films 103 and/or the second layer 105 can be with every 279 square metres of shrinkable films 103 or the Have for two layer 105 scope from as little as about 0.04kg, about 0.1kg, about 0.5kg or about 1.3kg to up to about 2kg, about 3.5kg or about 5.5kg adhesive 115.Multiple coatings of adhesive 115 can be applied to realize above-mentioned amount.

Carton blank 100 can be formed as board rolls (not shown), and the board rolls include multiple paper formed therein Plate blank material 100.Carton blank 100 can be cut out from board rolls.Board rolls can be formed to include formed therein appoint What an appropriate number of carton blank.

Fig. 3 depicts the perspective view of the partial cut of dixie cup 300 according to one or more embodiments.Carton blank 100 can To be formed, for example, rolling, fold, bending, crimping or otherwise configuration forms truncated cone side wall 305.For example, Third and fourth edge 111,113 can be fastened on each other with overlapping simultaneously (for example, via heat seal), so as to be formed with seam 310 frustum body sidewall 305.Shrinkable films 303 can form or provide at least the one of the inner surface of frustum body sidewall 305 Part, and cardboard substrate 105 can form or provide at least a portion of the outer surface of side wall 305.Such as figure 3 illustrates , shrinkable films 103 not yet shrink to provide the film 103 through contraction.

Side wall 305 can be by rolling, crimping, folding, bending or otherwise by the carton blank described in Fig. 1 100 the third and fourth edge 111,113 is positioned to and is in contact with each other be molded, so as to form seam 310.For example, paperboard blank Material 100 can be molded around heart axle, so as to form seam 310.In this way, first edge 107 can form the first of side wall 305 Edge or " top " edge, and second edge 109 can form the second edge or " bottom " edge of side wall 305.If paper Plate substrate 105 is coated with polymeric material (for example, polyethylene), then side wall 305 can be heat sealed or ultra-sonic welded is to provide Sealing joints 310.Seam 310 can also be by one or more adhesives (for example, adhesive 115 or suitable for making the 3rd He 4th edge 111,113 any other adhesive sealed against one another) seal.As shown, adhesive 115 can be used for edge Shrinkable films 103 are fastened in cardboard substrate 105 and so may reside in seam by the third and fourth edge 111,113 In 310.

First edge 107 can be rolled, fold, crimping, bending or otherwise configuration to form edge or " side Along crimping " 315, the edge or " edge crimping " turn into the edge or " top " edge of side wall 305.More specifically, for shape Into edge crimping, the edge 107 of carton blank 100 can be rolled, pushing or crimping are into the outer end for causing the edge or remote Transfer and contact cardboard substrate 105 and maintain this position in end.Edge crimping can traverse paperboard products first edge or The circumference or circumference at " top " edge or its only a part.

The second edge 109 of carton blank 100 can form the second edge or " bottom " edge of side wall 305.Dixie cup 300 Bottom panel 320 can be disposed in or otherwise be fastened on side wall 305 (for example, near or adjacent to the of side wall Two edges) so that side wall 305 and the formation vessel volume 330 of bottom panel 320.Bottom panel 320 can by adhesive 115, Another adhesive and/or couple via other means (such as by heat seal), attach, engage, fixing, being attached, connecting, Or otherwise come to be fixed on side wall 305.For example, similar to cardboard substrate 105, bottom panel 320 can be coated with poly- Form close between compound material, the polymeric material (if present) that the polymeric material can be in cardboard substrate Envelope.In one or more embodiments, second edge 109 can to interior folding and can with from bottom panel 320 to downward The side ring or one or more contact pin stretched are overlapping.

The outer surface of side wall 305 and/or inner surface can include one or more printed patterns, one or more of prints Map brushing case can be applied in cardboard substrate 105." printed patterns " and similar terms are also referred to for oil attractive in appearance Ink print pattern.However, this feature can have the function aspects for such as showing filling line.

Dixie cup 300 can have any appropriate vessel volume 330.For example, vessel volume 330 can be with scope from as little as about 20mL, about 40mL, about 60mL, about 80mL or about 100mL are to up to about 120mL, about 200mL, about 300mL, about 400mL, about 500mL, about 750mL, about 1,000mL, about 1,300mL or about 1,500mL or more.For example, vessel volume 330 can be from about 150mL to about 500mL, about 450mL are to about 1,000mL, about 400mL to about 900mL or about 800mL to about 1,300mL.

Fig. 4 depicts the cross-section elevation of dixie cup 400 according to one or more embodiments, and the dixie cup has through contraction Film 103 and formed or positioned at gap 404 between film 103 through contraction and cardboard substrate 105.Dixie cup 400 can also be wrapped Include edge crimping 415 and bottom panel 420.When shrinkable films 103 shrink, can shrinkable films 103 non-fastening part Gap 404 is formed between cardboard substrate 105.Gap 404 can provide insulative properties for dixie cup 400.For example, will can have From as little as about 70 DEG C, about 75 DEG C or about 80 DEG C to up to about 90 DEG C, about 95 DEG C, about 100 DEG C or about 110 DEG C or higher of temperature Hot liquid be added to dixie cup 400, to cause shrinkable films 103 to shrink and form heat-insulated gap 404.The formation in gap 404 or In the presence of the outer surface heat-insulated with hot liquid therein of dixie cup 400 can be provided.When in the dixie cup 400 containing temperature be 95 DEG C extremely During about 100 DEG C of liquid, the temperature of the outer surface of dixie cup 400 can be less than about 70 DEG C, less than about 65 DEG C, less than about 60 DEG C, it is small In about 55 DEG C, less than about 50 DEG C, less than about 45 DEG C, less than about 40 DEG C or less than about 35 DEG C.In this way, people can be in the outer of container The dixie cup 400 wherein containing hot liquid is held around surface, without being burnt or being undergone in other respects due in dixie cup 400 Hot liquid and the unsatisfactory level that causes it is uncomfortable.

For shrinking shrinkable films 103 or can be with base in time of the original state to needed for through transition between contraction state Change in one or more factors, for example, the thickness of the area of shrinkable films, shrinkable films, being placed with and shrinkable films 103 contacts or otherwise into heat exchange relationship hot fluid temperature, when shrinkable films 103 shrink into being formed on The amount or flow velocity of volume or space between shrinkable films 103 and the second layer 105 or the air in " gap " or other fluids or The combination of these factors of person and/or other factors.As used in this, term " original state " refers to being fastened to cardboard In substrate 105 after and the shrinkable films 103 after dixie cup 600 has been molded.It should be noted that in shrinkable films 103 Manufacturing process in, shrinkable films 103 can anneal or otherwise handle or process, and shrinkable films 103 be carried out Annealing or otherwise progress processing may cause to shrinkable films and shrink but be not retracted to shrinkable films 103 and can receive The maximum of contracting.

In one or more embodiments, when the fluid that temperature is about 70 DEG C to about 100 DEG C contacts shrinkable films 103, It is to hold per 100mL containers for alloing shrinkable films 103 to proceed to from original state through the time quantum needed for the state of contraction Product 430 about 10 seconds or less, about 9 seconds or less, about 8 seconds or less, about 7 seconds or less, about 6 seconds or less, about 5 seconds or more Less, about 4 seconds or less, about 3 seconds or less, about 2 seconds or less, about 1 second or less or about 0.5 second or less.For example, when temperature When degree is about 80 DEG C to about 100 DEG C of fluid contact shrinkable films 103, shrinkable films 103 are transitted to through shrinking from original state Time of state can be to 2 seconds per 100mL vessel volumes 430 about 0.5 seconds.For example, if vessel volume is about 600mL, Then when the fluid that temperature is about 90 DEG C contacts shrinkable films 103, shrinkable films 103 can be in about 3 seconds to about 12 seconds from first The beginning status transition extremely state through contraction.

As figure 4 illustrates, cardboard substrate 105 can include the one or more air vents for being formed therethrough which or limiting (two are shown as 406).Air vent 406 may serve as making air or other gases from the position outside cardboard substrate 105 Flow and enter the flow path in gap 103.Although shrinkable films 103 can be in the absence of one or more air vents 406 In the case of shrink, but one or more of air vents 406 can help shrinkable films 103 to shrink.Shunk in shrinkable films 103 When, it is likely to form vacuum between cardboard substrate 105 and shrinkable films 103.The presence of vacuum may be reduced and/or prevented can Desired amount is shunk or shunk to shrink film 103.With the one or more of air vents 406 formed through cardboard substrate 105 Air or other fluids can be allowed to be flow to when shrinkable films 103 shrink in gap 404.In this way, passing through cardboard substrate 105 A variety of paper containers can be provided (for example, with more consistent and reliable way by forming one or more of air vents 406 The dixie cup 400 of the shrinkable films 103 of contraction).It is last that the reliable and consistent contraction of shrinkable films 103 can provide more business The product of prestige is used to being sold to consumer.

Air vent 406 can use cutter, punch, pin, other rigid devices that cardboard substrate 105 can be punched, Laser or other any suitable equipments or technology cut through cardboard substrate 105.One or more of air vents 406 Suitable shape can include but is not limited to U-shaped air vent, big tabs, small tabs, crack, perforation, X-shaped and cut out part, circular hole or appoint What other shapes.If foring two or more air vents 406, described two or more through cardboard substrate 105 The shape or configuration and/or size of air vent 406 can be identical or different relative to each other.In one or more embodiments, Air vent 406 can also be formed via calcination.It is special that the proper method for forming air vent 406 via calcination can be included in the U.S. Those methods for discussing and describing in sharp application publication number 2012/0312869.

When shrinkable films 103 shrink, the amount for the liquid that cardboard packaging can be kept is likely to reduced.Such as figure 4 illustrates , gap 404 occupies space or volume in dixie cup 400, and the space or volume internally have liquid in volume 430 Under the conditions of can be free of any liquid.For example, compared with vessel volume 430 is before the contraction of shrinkable films 103, by receive Contracting film 103 shrinks and forms gap 404, vessel volume 430 can reduce about 35% or less, about 30% or less, about 25% or less, about 20% or less, about 15% or less, about 10% or less or about 5% or less.Therefore, dixie cup 400 Size can be enlarged, so as to provide can be containing the liquid of desired amount when filling up dixie cup 400.

The embodiment of present disclosure is further to any of paragraphs below or many persons：

1. a kind of method for making paper container, including：Apply adhesive, the cardboard substrate around cardboard substrate With reciprocal first edge and second edge and reciprocal 3rd edge and the 4th edge, wherein, it is described viscous Mixture is at least partly around the area that there is no described adhesive；Shrinkable films are fastened to by institute by described adhesive State to produce carton blank in cardboard substrate, wherein, the shrinkable films be configured to the amount shunk along first axle relative to Along the amount shunk with the perpendicular second axis of the first axle into more than 1:1 ratio；Make the 3rd edge and described 4th imbricate to form side wall, wherein, the side wall includes：Inner surface including the shrinkable films and including the paper The outer surface of plate substrate, the first edge and the second edge；By bottom panel at or near the second edge It is fastened on the side wall；And the first edge is carried out crimping to form edge.

2. the method according to paragraph 1, wherein, the first axle extends through the 3rd edge and the described 4th Edge.

3. the method according to paragraph 1 or 2, wherein, the shrinkable films are configured to shrink along the first axle It is shrunk to relative to along the second axis more than 5:1 ratio.

4. the method according to any one in paragraph 1 or 2, wherein, the shrinkable films are configured to along described first Axis shrinks is shrunk to about 2 relative to along the second axis:1 to about 50:1 ratio.

5. the method according to any one in paragraph 1,2 or 4, wherein, the shrinkable films are configured to along described One axis shrinks is shrunk to about 2 relative to along the second axis:1 to about 20:1 ratio.

6. the method according to any one in paragraph 1 to 5, wherein, the shrinkable films can warm including biaxially oriented Shrinkable polymer material.

7. the method according to any one in paragraph 1 to 6, wherein, the shrinkable films include polyethylene, polypropylene, Or its mixture.

8. the method according to any one in paragraph 1 to 7, wherein, the cardboard substrate includes being disposed in ply of board Two opposite sides on first coating and second coating, and wherein, the first coating and the second coating include polyene Hydrocarbon.

9. the method according to any one in paragraph 1 to 8, wherein, circumference of the described adhesive along the substrate passes through Aniline printing, rotogravure printing, hectographic printing, silk-screen printing or its any combinations apply.

10. the method according to any one in paragraph 1 to 9, further comprises the shrinkable films being fastened to institute Formed before stating in cardboard substrate through at least one aperture of the cardboard substrate.

11. a kind of method for making paper container, including：Apply adhesive in the periphery of cardboard substrate, it is described Cardboard substrate has reciprocal first edge and second edge and reciprocal 3rd edge and the 4th edge, its In, described adhesive is at least partly around the area that there is no described adhesive；Will be collapsible by described adhesive Film is fastened in the cardboard substrate to produce carton blank, wherein, the shrinkable films are configured to shrink along first axle Amount relative to along and the amount shunk of the perpendicular second axis of the first axle into more than 1:1 ratio；Make the described 3rd Edge overlaps each other with the 4th edge；3rd edge and the 4th edge are heat sealed on each other to form side Wall；Bottom panel is fastened at or near the second edge on the side wall；And the first edge is rolled up While to form edge.

12. the method according to paragraph 11, wherein, the first axle is in the first edge and the second edge Between extend, and wherein, the shrinkable films are configured to shrink relative to along the second axis along the first axle It is shrunk to about 2:1 to about 50:1 ratio.

13. the method according to paragraph 11 or 12, wherein, the shrinkable films include it is biaxially oriented can thermal contraction gather Compound material.

14. the method according to any one in paragraph 11 to 13, wherein, the cardboard substrate includes being disposed in cardboard First coating and second coating on the two opposite sides of layer, and wherein, the first coating and the second coating include gathering Alkene.

15. the method according to any one in paragraph 11 to 14, further comprises being fastened to by the shrinkable films Formed before in the cardboard substrate through at least one aperture of the cardboard substrate.

16. a kind of carton blank for making paper container, including：Cardboard substrate, the cardboard substrate has reciprocal First edge and second edge and reciprocal 3rd edge and the 4th edge；And shrinkable films, wherein, it is described to receive A part for contracting film is fastened to the cardboard substrate by being disposed in the adhesive between the cardboard substrate and the film On, wherein, the amount that the shrinkable films are configured to shrink along first axle is perpendicular with the first axle relative to edge The amount that second axis is shunk is into more than 1:1 ratio.

17. the carton blank according to paragraph 16, wherein, the first axle extends through the first edge and institute Second edge is stated, and wherein, the shrinkable films are configured to shrink relative to along second axle along the first axle Linear shrinkage is into about 2:1 to about 50:1 ratio.

18. the carton blank according to paragraph 16, wherein, the first axle extends through the 3rd edge and institute The 4th edge is stated, and wherein, the shrinkable films are configured to shrink relative to along second axle along the first axle Linear shrinkage is into about 2:1 to about 50:1 ratio.

19. the carton blank according to paragraph 16 or 18, wherein, the shrinkable films include polyethylene, polypropylene or Its mixture.

20. the carton blank according to any one in paragraph 16 to 19, wherein, the cardboard substrate includes being disposed in First coating and second coating on the two opposite sides of ply of board, and wherein, the first coating and the second coating bag Include polyolefin.

21. the carton blank according to any one in paragraph 16 to 20, wherein, the cardboard substrate is included through its shape Into one or more apertures.

22. the carton blank according to any one in paragraph 16 to 21, wherein, the carton blank is formed container Side wall.

23. the carton blank according to any one in paragraph 16 to 22, wherein, the shrinkable films are configured to along institute First axle contraction is stated to be shrunk to more than 5 relative to along the second axis:1 ratio.

24. the carton blank according to any one in paragraph 16 to 22, wherein, the shrinkable films are configured to along institute It is about 2 to state first axle and shrink relative to formed ratio is shunk along the second axis:1 to about 20:1.

25. the carton blank according to any one in paragraph 16 to 24, wherein, the shrinkable films include biaxially oriented Can heat-shrinkable polymeric thing material.

26. the carton blank according to any one in paragraph 16 to 25, wherein, week of the described adhesive along the substrate Boundary is applied by aniline printing, rotogravure printing, hectographic printing, silk-screen printing or its any combinations.

Some embodiments and feature are described using one group of numerical value limes superiors and one group of numerical value limit inferior.It should be understood that Be, it is contemplated to combination including any two value is (for example, be worth under the combination of any lower value and any upper value, any two The combination that is worth in combination, and/or any two) scope, unless otherwise stated.Show in following one or more claims Some lower limits, the upper limit and scope are showed.All numerical value are the value indicated by " about " or " substantially ", and it is general to consider this area Experimental error and change that logical technical staff is contemplated that.

Have been defined above a variety of different terms.As for the term used in claim not defined above Situation, having been given by the personnel of the art of the term should provide such as at least one printed publication or such as issued patents Middle reflected widest definition.In addition, all patents quoted in this application, test program and alternative document are whole Disclosure content as the degree being incorporated by reference does not have inconsistent and allowed for this combination with the application All permissions.

Although above content is directed to embodiments of the invention, it is contemplated that other and further embodiment and Without departing substantially from the base region of the present invention, and the scope of the present invention is determined by the claims that follow.

Claims

1. a kind of method for making paper container, including：

Apply adhesive around cardboard substrate, the cardboard substrate have reciprocal first edge and second edge and Reciprocal 3rd edge and the 4th edge, wherein, described adhesive is at least partly around there is no the bonding The area of agent；

Shrinkable films are fastened in the cardboard substrate to produce carton blank by described adhesive, wherein, it is described to receive Contracting film is configured to the amount shunk along first axle relative to the amount along the second axis contraction perpendicular with the first axle Into more than 1:1 ratio；

Make the 3rd edge and the 4th imbricate to form side wall, wherein, the side wall includes：

Inner surface including the shrinkable films and include the outer surface of the cardboard substrate,

The first edge, and

The second edge；

Bottom panel is fastened at or near the second edge on the side wall；And

The first edge is carried out crimping to form edge.

2. the method for claim 1, wherein the first axle extends through the 3rd edge and the 4th side Edge.

3. the method for claim 1, wherein the shrinkable films be configured to along the first axle shrink relative to It is shrunk to along the second axis more than 5:1 ratio.

4. the method for claim 1, wherein the shrinkable films be configured to along the first axle shrink relative to About 2 are shrunk to along the second axis:1 to about 50:1 ratio.

5. the method for claim 1, wherein the shrinkable films be configured to along the first axle shrink relative to About 2 are shrunk to along the second axis:1 to about 20:1 ratio.

6. the method for claim 1, wherein the shrinkable films can heat-shrinkable polymeric thing material including biaxially oriented Material.

7. the method for claim 1, wherein the shrinkable films include polyethylene, polypropylene or its mixture.

8. the method for claim 1, wherein the cardboard substrate includes being disposed on the two opposite sides of ply of board First coating and second coating, and wherein, the first coating and the second coating include polyolefin.

9. the method for claim 1, wherein circumference of the described adhesive along the substrate passes through aniline printing, rotation Intaglio printing, hectographic printing, silk-screen printing or its any combinations apply.

10. the method as described in claim 1, further comprises：It is fastened to by the shrinkable films in the cardboard substrate At least one aperture through the cardboard substrate is formed before.

11. a kind of method for making paper container, including：

Apply adhesive in the periphery of cardboard substrate, the cardboard substrate has reciprocal first edge and the second side Edge and reciprocal 3rd edge and the 4th edge, wherein, described adhesive is at least partly around there is no State the area of adhesive；

The 3rd edge is set to be overlapped each other with the 4th edge；

3rd edge and the 4th edge are heat sealed on each other to form side wall；

Bottom panel is fastened at or near the second edge on the side wall；And

The first edge is carried out crimping to form edge.

12. method as claimed in claim 11, wherein, the first axle the first edge and the second edge it Between extend, and wherein, the shrinkable films are configured to shrink along the first axle and received relative to along the second axis Shorten about 2 into:1 to about 50:1 ratio.

13. method as claimed in claim 11, wherein, the shrinkable films can heat-shrinkable polymeric thing material including biaxially oriented Material.

14. method as claimed in claim 11, wherein, the cardboard substrate includes being disposed on the two opposite sides of ply of board First coating and second coating, and wherein, the first coating and the second coating include polyolefin.

15. method as claimed in claim 11, further comprises being fastened in the cardboard substrate by the shrinkable films At least one aperture through the cardboard substrate is formed before.

16. a kind of carton blank for making paper container, including：

Cardboard substrate, the cardboard substrate has reciprocal first edge and second edge and reciprocal 3rd side Edge and the 4th edge；And

Shrinkable films, wherein, a part for the shrinkable films is by being disposed between the cardboard substrate and the film Adhesive is fastened in the cardboard substrate, wherein, the amount that the shrinkable films are configured to shrink along first axle is relative In along the amount shunk with the perpendicular second axis of the first axle into more than 1:1 ratio.

17. carton blank as claimed in claim 16, wherein, the first axle is in the first edge and second side Extend between edge, and wherein, the shrinkable films are configured to shrink relative to along second axle along the first axle Linear shrinkage is into about 2:1 to about 50:1 ratio.

18. carton blank as claimed in claim 16, wherein, the shrinkable films include polyethylene, polypropylene or its mixing Thing.

19. carton blank as claimed in claim 16, wherein, the cardboard substrate includes being disposed in opposite the two of ply of board First coating and second coating on side, and wherein, the first coating and the second coating include polyolefin.

20. carton blank as claimed in claim 16, wherein, the cardboard substrate is one or more including what is be formed therethrough which Aperture.

21. carton blank as claimed in claim 16, wherein, the carton blank is formed the side wall of container.