CN104903063A - Microwave heating of heat-expandable materials for making packaging substrates and products - Google Patents

Microwave heating of heat-expandable materials for making packaging substrates and products Download PDF

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Publication number
CN104903063A
CN104903063A CN201380047504.2A CN201380047504A CN104903063A CN 104903063 A CN104903063 A CN 104903063A CN 201380047504 A CN201380047504 A CN 201380047504A CN 104903063 A CN104903063 A CN 104903063A
Authority
CN
China
Prior art keywords
heat
base substrate
adhesive
cup
microwave
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.)
Pending
Application number
CN201380047504.2A
Other languages
Chinese (zh)
Inventor
T.Z.富
M.R.库克
E.R.埃利斯
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LBP Manufacturing LLC
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LBP Manufacturing LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LBP Manufacturing LLC filed Critical LBP Manufacturing LLC
Publication of CN104903063A publication Critical patent/CN104903063A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3461—Making or treating expandable particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
    • B29C33/14—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels against the mould wall
    • B29C33/18—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels against the mould wall using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/54—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length in the form of expandable particles or beads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
    • B29C70/747—Applying material, e.g. foam, only in a limited number of places or in a pattern, e.g. to create a decorative effect
    • 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
    • B65D81/38—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 with thermal insulation
    • B65D81/3865—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 with thermal insulation drinking cups or like containers
    • B65D81/3874—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 with thermal insulation drinking cups or like containers formed of different materials, e.g. laminated or foam filling between walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0855—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using microwave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7132—Bowls, Cups, Glasses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Packages (AREA)
  • Making Paper Articles (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

Packaging containers (e.g., cups) or protective wraps may be made with two layers of sheet material and an expanded thermal insulation between the layers. The thermal insulation may be made from microencapsulated, heat-expandable particles that are expanded with a microwave heater at some point during processing substrate, building, conveying or packaging the containers. The particles may be applied to blanks formed from die cutting, expanded by heating, and then tampered. The blanks may be outer wraps to a double wall cup, formed by placing and adhering an inner cup to the outer wrap. Alternatively, an adhesive containing the particles are applied to inner cups, which may be adhered to outer wraps to complete formation of the double wall cups. The cups may then be heated with a microwave heater at a subsequent workstation as the cups are conveyed, stacked, placed in bags, the bags in cartons and the cartons stacked and palletized.

Description

To the heating using microwave of thermally expansible material for the preparation of package base and product
Background technology
Consumer often buys ready-made (ready made) product in the container be made up of package base, such as F&B and other products.Thermoinsulated container can be designed for heat or cold liquid or food, such as Hot Coffee, iced tea, hamburger, sandwich or pizza etc.Need by reduce content by the heat of this container or cold transmission enable these containers as far as possible long keep the temperature of internal liquid or food.
In order to help to carry out isolated between the hand of consumer and the heat of hot beverage or the preference temperature of food or container for drink inner material is kept the long period, inventors have developed the adhesive of heat-swellable and coating for package base, such as, for multilayer microflute plate, Paper or cardboard.This expandable adhesive and coating are once be heated beyond certain temperature range and will expand.
Accompanying drawing explanation
Fig. 1 is the perspective view with the cup of outer wall of assembling.
Fig. 2 is the side cutaway view of double-wall cup.
Fig. 3 is the cross-sectional view of the sleeve with cup.
Fig. 4 is the side view of the example of machine system for the preparation of packaging material or container base.
Fig. 5 is the side view of void apparatus, can be processed by this void apparatus to the base substrate (blanks) being stained with heat expandable particles.
Fig. 6 is the improvement axle that adaptation has the raised band comprising vacuum hole.
Fig. 7 is the example of the outer wall base substrate (or parcel) of the patterning coating with thermally expansible material, and it has gap, and the raised band of the axle of Fig. 6 can be arranged in this gap.
Fig. 8 is the perspective view of electron tubes type conveyer, uses the axle of Fig. 6 to transport the parcel comprising the particle of thermal expansion on inner side.
Fig. 9 is the perspective view of cup-forming machine, shows the outer surface material of heat-swellable being applied over interior cup.
Figure 10 is the perspective view of the cup-forming machine of Fig. 9, shows and this cup in covering is inserted outer cup base substrate (or parcel) to construct double-wall cup.
Figure 11 is the flow chart of multiple work station for the preparation of the preparation process of packaging product or location point, wherein can apply microwave thermal and expand with the adhesive of the thermal expansion in the basalis making to add package base and/or product or on basalis or coating between these location point places or these location points.
Figure 12 is the perspective diagram of the example of industrial microwave heater assembly when being positioned at conveyer belt (conveyor belt) and being upper.
Figure 13 is the top plan schematic view of the heating using microwave apparatus of Figure 12.
Figure 14 is the side-looking floor map of the industrial microwave heater assembly of Figure 12.
Figure 15 is the elevational cross-section schematic diagram of the industrial microwave heater assembly of Figure 12.
Figure 16 is the flow chart of the example of method for preparing multi-layer sheet in one approach, and the method comprises this multi-layer sheet of heating using microwave with the expansion of the adhesive or coating that accelerate heat-swellable.
Detailed Description Of The Invention
Disclose for using Microwave Heating, activation and the adhesive of expansion heat-swellable and the method for coating, this adhesive and coating can be arranged on base material and/or base material (this base material is subsequently for being converted into product) or be located immediately on packaging product or packaging product in its preparation method process.This base material can be the single or multiple lift material of roll, sheet material or base substrate form, is made up of any combination of such as paper, cardboard, art paper, concave-board material, plastic foil, weaving material, textile, non-woven material and/or base metallization or these materials.
This multi-layer sheet or winding substrate can by thermal expansion adhesive together with paint adhesion.This product can be multiple packaging or non-packaging product, such as but not limited to the hot cup of double wall paper, paper bag, cell-shell (clamshells, blister pack refer to that product is plastic casing packaging), hot cup insulating sleeve, taking-out type folded box and case.The method can be included in this product and makes rear or after this packing of product in a transport container or after being loaded on chassis by this container, heat the packaging product be made up of this material.Microwave applicator uses microwave energy to make adhesive and the coating activation of this heat-swellable, makes adhesive and the coating efficient expansion of this heat-swellable.The expansion of this adhesive or coating can help the thermal insulation and the rigidity that improve lamination or coating material, and this contributes to this material converting is packaging or container, and improves the fluid of internal tank and the thermal insulation of solid.The expansion of this adhesive or coating can also help to reduce packaging material by allowing to use less material while the thermal insulation kept needed for lamination and coating material and rigidity.
Can by said method automation to make the adhesive of the adhesive of this heat-swellable on base material or in base material and coating activation and expansion (also referred to as " pre-activate ") or this heat-swellable after product formation on product or in product and coating activation and to expand (being called " activating afterwards ").The adhesive of this heat-swellable or coating can with the composition preparations comprising the particle (such as microballoon or microtubule or other shapes) of microencapsulation of heat-swellable and other components (other adhesives needed for such as starch or other natural or composite adhesiveses and application-specific).Such as, can by the adhesive of this heat-swellable or coating preparation one in the following or its combination: viscosity modifying agent, humidity modifier, defoamer, dispersant, mould inhibitor and salt.Some examples of the particle of microencapsulation comprise: microballoon F and the FN series that Expancel, Matsumoto that Dualite, AkzoNobel that Henkel provides provide provide and the microballoon that Kureha provides.
This material can be heated by each location point place microwave applicator any in this preparation method after the adhesive of this heat-swellable or coating apply.Any combination of multilayer chip material and aforementioned applicable material can be carried out lamination and is sent to final process, such as, transmit to carry out to print, die-cut, be shaped and/or be otherwise assembled into product container.
Can these prepare location point or in the stage arbitrarily or its combination place (such as following this preparation method between multiple work station place or multiple work station) with microwave applicator, heat is applied to this material.Such as, can while stacked or lamination, microwave thermal be applied to substrate after the adhesive having applied this heat-swellable or coating.Further, after product container is shaped, (being such as sent to this product for being packaged in the process of the work station in cask by product) microwave thermal can be applied to the independent product container comprising unexpanded microballoon.
Alternately or additionally, microwave thermal can be passed through cask (such as by multiple packing of product conventional flute profile carton wherein) and applies.In addition, microwave thermal can be applied by the stacking load chassis thereon of multiple cask.In the substrate adding this product or be layered in the adhesive of this this heat-swellable suprabasil or coating can until just carry out transport applies microwave thermal during when these later stages of this preparation method expand (or just expansion completely).
Packing container can be made up of heat-barrier material and/or carry out heat insulation with heat-barrier material.This heat-barrier material can be formed by the laminated multi-layer substrate of the adhesive or coating that comprise heat-swellable or through the substrate of coating.The adhesive of this heat-swellable or coating can expand by applying microwave thermal before or after formed packing container by this multi-layer substrate.Except microwave thermal, also can apply the source of other heat and heat energy, such as hot-air or infrared (IR).
The adhesive of this heat-swellable or coating can be applied on this container or in container material or between container floor, or can be applied to outer wall or these the combination of container.This heat-barrier material comprising the adhesive of heat-swellable or coating (such as when preparing this container and/or container sleeve) can expand before arriving end user, and/or this heat-barrier material can only at end user place and only expand in response to the temperature of the certain level of the hot beverage supplied in such as this container or food.The heat-barrier material of this expansion may be used for helping the heat-proof quality of this container and/or container sleeve and/or improves rigidity for this container and/or container sleeve, and can help the thickness of this material member reducing this container and/or container sleeve.
Flaky material for the preparation of this packaging, container and/or container sleeve can be prepare by the machine system of conveyer formula in automatic assembling Wiring technology, will discuss in more detail after its a kind of example.The adhesive of this heat-swellable or coating can be applied by a lot of conventional application method, such as contactless spraying and/or contact bar, roller, nozzle or slit are extruded, to spread and on brushing method or additive method paint flaky material, such as but not limited on paint Corrugated media before being pressed onto on it by inner liner.Thus the adhesive of this heat-swellable or coating expand in this preparation method's process before can the flaky material of some kinds two-layer between.When this heat-barrier material is coating, before thermal expansion, this heat-barrier material can on paint individual layer (or single) sheet material or the outer surface of paint multi-layer sheet or inside.Other embodiments are feasible equally, as discussed subsequently, such as, after formation multi-layer substrate or after formed product or before being transported from warehouse by this container, apply microwave thermal and with some other location points in this preparation method's process or after this preparation method, this expandable adhesive or coating are expanded.
In some embodiments, the adhesive/coating of this heat-swellable is made this expansion occur when prepared by this container by heating in the machine assembly procedure of conveyer type.Use regular machinery system, common thermal source comes heated air and/or infrared (IR).Under speed of production (such as 150 feet per minute clock (fpm)-600fpm), only on machine system, the online conventional heating methods (such as hot-air furnace and/or infrared heater) installed is not enough to the particle of the microencapsulation fully activating heat-swellable sometimes---as added microballoon in the adhesive of this heat-swellable or coating or microtubule to.This part is because space and thermal power restriction and these methods are mainly based on caused by the heating mechanism to material-to-be-heated conduction from outside to inside, convection current and radiant heat transfer.Therefore use these traditional heating sources, demonstrate the technical problem of heat energy transfer mode, this causes the microparticle poor efficiency of this heat-swellable and limited expansion.Such as, the exterior section of this coating may first dry and solidification, significantly limit the expansion of this expandable microparticle.
Propose in the present invention to apply microwave energy from industrial microwave heater, this industrial microwave heater be suitable in the method process, microwave energy being applied to by its base material comprising this expandable adhesive or coating or packaging product whole on.Therefore, should can penetrate into the adhesive of this heat-swellable of this base internal or coating from microwave of microwave applicator and provide energy for it, make its with by conducting, compared with convection current or surface emissivity heat and will realize, evenly, large volume ground (volumerically) and heating rapidly.This is because within a short period of time is to caused by the volume heating using microwave of the adhesive/coating of this heat-swellable.Such as, the microballoon mixture be positioned at wherein be exposed to powerful microwave energy be rapidly heated time, the microballoon being mixed into the heat-swellable in this adhesive/coating can rapid expanding.
The adhesive of this heat-swellable or coating can comprise the microparticle of the microencapsulation of heat-swellable, such as, from microballoon or the microtubule of multiple separate sources.Unrestricted example comprises commodity (Dualite, MicroPearl and Expancel of discussing such as) and can be used for the microtubule of the heat-swellable preparing expandable material.
Adhesive/the coating of this heat-swellable can comprise the glue based on starch; Can based on synthesis or natural material (such as polyacrylate, polyvinyl acetate, polyvinyl alcohol, starch, PLA and other materials); And can on a lot of different base material of paint (such as paper, cardboard, corrugated plating, plastic foil, metalized film, textile, weave or non-woven material and other materials for the preparation of laminate or coated substrate).The adhesive of this heat-swellable or coating also can helping to reduce material, reducing the impact of packaging hostile environment by reducing material while the volume kept in packaging product and thermal insulation properties.These substrates through lamination or coating can be converted into much useful food and non-food packaging product then, such as but not limited to bag and other packaging products (being referred to as container) in set up box container, hot and cold cup, chest, paper cell-shell, groove sleeve, microflute cell-shell, E-groove box, bag and box.With usually obtainable with provided by current material supplier those compare, this multilayer material with expanding material is that some provide the greater flexibility of expansion to the size of different base and the selection of basic weight.
Adhesive/the coating of these heat-swellables can apply in conventional surge layer depressor, printing machine, applicator, paint applicator or other method of application, and expands by means of industrial microwave heater with effective rapid expanding.The coating of this heat-swellable can all standing ground or with in the pattern paint paper substrates of any practical design, expand to produce the cellular or foaming structure with different final utilization advantage in this coating with microwave applicator subsequently, some advantages wherein will be explained below.
Fig. 1 illustrates container 100, such as cup, and it has inwall 102 and outer wall 104.The form that base substrate for outer wall 104 can be container sleeve or wrap up for the sidewall of this container 100 body.This inwall 102 can be formed by laminate, has expandable heat-barrier material on its outer surface.This heat-barrier material also can between inwall 102 and outer wall 104.When the inwall 102 being coated with this heat-barrier material comprises enough volumes and heat-insulating properties, outer wall 104 can not be needed.
This container 100 is not limited to cup, can be any other containers, include but not limited to bulk coffee container, soup cylinder, compressing container, plate, sleeve (such as single-face corrugated shape, Double side ripple shape, non-undulatory cardboard etc.), set up box, plate, bowl, cell-shell, bag and there are or do not have other containers of lid or sleeve.This container 100 can be cylindric cup or the container with other geometrical constructions (comprising taper, rectangle, square, ellipse etc.).
This outer wall 104 base substrate is not limited to corrugated die cutting base substrate, can be made up of the cardboard of any type, paper, paillon foil, film, fabric, foams, plastics etc.This outer wall 104 can be made up of any nominal paper making raw material, include but not limited to natural one side, in vain push up one side, top through coating and bleaching one side, ripple, the paper of reeded ripple, cardboard, blank sheet of paper, recycled writing paper, art paper, make through the cardboard of coating or any combination of these materials.This outer wall 104 can remove from container 100 or this outer wall 104 can adhere on this container 100.This outer wall 104 such as can by using heat adhesive, cold glue and/or other bondings or sealing mechanism are laminated on container and adhere to arbitrarily by this outer wall 104 base substrate.Alternately or additionally, this outer wall 104 base substrate can adhere to heat-barrier material.If be attached on this cup by outer wall 104 in preparation process, so the demand of insulating sleeve is used can effectively to improve this attachment by eliminating end user.In addition, compare with independent insulating sleeve with container, this attachment can reduce the amount of such as, storage area needed for end user's (such as storing a kind of article, double-walled or multi-walled container).
Fig. 1 is uninevitable to be drawn in proportion.Such as, this outer wall 104 can cover the surface of this container 100 than the greater or lesser part of diagram.Such as, this outer wall 104 can provide full cup to cover.The surface area improving outer wall 104 can provide larger heat insulation area and larger print surface.Although figures illustrate the outer wall 104 on cup, outer wall 104 can add on any other containers (such as but not limited to bulk beverage container, compressing container and soup cylinder).This outer wall 104 can add on container as parcel (Fig. 2 and 3).
Fig. 2 is the side cutaway view of container 100, it can be have the double-wall cup of inwall 102 and outer wall 104 or have the single-walled cup of laminate (comprising inwall 102 and outer wall 104), between two material layers (such as paper), have expandable heat-barrier material 216.Space 200 between inwall 102 and outer wall 104 partially or completely can be full of this expandable heat-barrier material, and it can apply from such as microwave applicator to be full of at least partly after heat causes the expansion of this heat-barrier material.That this container 100 can be suitable for keeping heat or cold liquid and solid material (such as food).For cold drink or food, the raising of this chamber wall thermal insulation will not only help this beverage and food cold insulation long enough time, but also help is reduced or eliminated the condensate moisture on container outer wall.Outer wall 104 can be connected to provide closed gap betwixt at top and bottom place with inwall 102.
After this container 100 is shaped during microballoon (or other shaping reagent) thermal activation at the unexpanded heat-swellable that will wherein add, this heat-barrier material 216 can expand.Alternately or additionally, this heat-barrier material 216 can by such as introducing the microballoon of preexpanding, air or inert gas, air pocket situ preexpanding at heat-barrier material 216.This heat-barrier material 216 by such as microwave or can be activated by other heating means.This heat-barrier material 216 can include but not limited to: any combination comprising the water paint of the microballoon of heat-swellable, adhesive, adhesive based on starch, natural polymer adhesive, inert gas blown hot melt, synthetic material, foams coating or these or other materials.In a kind of example, this heat-barrier material 216 with the microencapsulation microballoon of heat-swellable can comprise and has a small amount of (such as 1-10%) microballoon and be mixed into starch composites in this heat-barrier material 216.This heat-barrier material 216 can be biodegradable, decomposable (compostable) and/or reusable edible.
According to different ratio, this heat-barrier material 216 can wet or half-dried or dry in be expandable.This heat-barrier material 216 can comprise synthesis or natural adhesive material arbitrarily, comprises water material, high solids content or 100% solid material.Solid content is generally the 20%-80% of this material, more preferably 30%-60%.Other compositions also can add in this binding material and/or heat-barrier material 216, include but not limited to: pigment or dyestuff, inorganic or organic filler/extender, for disperse surfactant, for control viscosity with optimize the thickener that applies or solvent, blowing agent, additive such as wax or slip agents, humidizer, for strengthening the absorbent salt of microwave etc.Alternately, heat-barrier material 216 can be adhesive.This heat-barrier material 216 can have several character, includes but not limited to: for the thermal insulation for internal tank material thermal protection or cold insulation; Absorption condensation moisture and/or liquid; Once contact can expand with hot material (such as 150 °F or higher temperature); And can inertia be kept until reach default activation temperature.Such as, this heat-barrier material 216 will keep inertia when about room temperature.This heat-barrier material 216 can be slurrying again, reusable edible and/or biodegradable.
Fig. 3 illustrates the cross section of the outer wall 104 (sleeve such as assembled with container 100 or parcel) in Fig. 2.This figure is intended to example and unrestricted.This cup can be substituted by any vessel (such as compressing dish, soup cylinder or bulk fluid containers).This outer wall 104 can have inner surface 306 and outer surface 304.Heat-barrier material 216 can be applied on inner surface 306, outer surface 304 and/or the surface between inner surface 306 and outer surface 304 302 (inwall of such as sleeve).Space 302 must not be comprised between this inner surface 306 and outer surface 304.
Heat-barrier material 216 (such as having the thermally expansible material of the microballoon of the heat-swellable of non-expanded form) can be applied over the inner surface 306 of outer wall 104.This heat-barrier material 216 can apply as the shape of full coat layer, film or the thickness not changing outer wall 104 before inflation in essence.Inside heat-barrier material 216 being applied over outer wall 104 also can keep the impressionability of the outer surface of outer wall 104.If the heat-barrier material on this outer wall 104 216 and such as standard dixie cup are assembled, so it can keep the elongated profile of this cup.Alternately, this heat-swellable material can in preparation process as parcel assembling before by microwave activation with accelerated expansion.Which ensure that this expandable adhesive/coating is expand and provide extra hardness and intensity after the preparation with before use in preparation process.
Fig. 4 is the view of the example of machine system 400 for the preparation of package base material, and this package base material can be used in preparing container (such as container 100 discussed above) subsequently.Such as but not limited to, this machine system 400 can be the machine system of conveyer type, has multiple stage, and such as, by Asitrade AG, the Asitrademicroflute laminating machine that Grenchen, Switzerland manufacture, it is only quoted as an example.The printing machine of other types, coating machine and laminating machine also can be used in the similar individual layer of preparation and multi-layer substrate material.Fig. 4 provides three parallel views: mechanical view A of method; The view B that can run through the mode of this machine with this flaky material, the viewgraph of cross-section C of the product of preparation obtained.This machine system 400 longitudinally can extend in quite long length, and can comprise multiple work station along its length.This flaky material be assembled in packaging material or substrate runs along this machine from right to left, as shown in Fig. 4.
This machine system 400 can use the first flaky material 402, and this first flaky material 402 can as roll or breadth be large quantities of provides.This first flaky material 402 can be supplied in this machine system 400 and by based on wheel, based on belt (belt) or other transfer systems by multiple steps of the method.Fig. 4 illustrates the system used based on wheel; Such as conveyer belt (1213 in Figure 12-13) can be moved forward by wheel 406 and a series of belt.Alternately or additionally, as shown in Figure 4, this machine system 400 can use can preprint swiped through flaky material.Different machine systems can use the die-cut base substrate of particular envelope (especially such as cup, container, plate, cell-shell, plate, sack or container for drink bottle), and when container for drink bottle, this flaky material 402 can be base substrate.
This first flaky material 402 can be made up of usually smooth material, and this material has certain rigidity and can bend or delineate so that bend along setting line.Such as, this flaky material 402 can be one side internal lining paper, such as but not limited to the liner of brown paper, the news plate scribbling clay, white top, container panel, solid bleached sulphate (SBS) plate or other materials.Can process this material, such as, the water-fast of raising or fluidity are provided, and printing can be had in the selected part of this material.Alternately or additionally, this flaky material 402 can be made up of paper, cardboard, recycled writing paper, Reclaimed board, corrugated cardboard, chipboard, glued board, MP metallized paper, plastics, polymer, fiber, aforesaid compound, mixture or combination etc.This first flaky material 402 can be made up of the material of reusable edible or can be decomposable, biodegradable or its combination.
This first flaky material 402 can be sent to the first work station 420 by roller 408.This first work station 420 can be corrugated or apply or printing station.This first work station 420 also can comprise corrugation rolls.This corrugation rolls can make this first flaky material 402 or other medium paper be shaped to a series of ripple or groove.Alternately, individual layer or monolithic substrate can directly pass through as the first flaky material 402 or paper medium and not carry out corrugated.
This first work station 420 also can comprise applicator, and it can by this side of the side (i.e. groove top) of immobilization material (securing material) paint first flaky material 402 or other medium paper.Such as, this applicator can have the hopper comprising immobilization material (such as adhesive) and the coating roll applicator may with metering outfit (such as bar or roller).This hopper can be positioned near this corrugation rolls and make this adhesive be applied to the wave of this corrugation rolls generation or the top of groove.Additionally or alternately, this immobilization material can by spraying, brush, nozzle extrudes or other modes apply.Such as, applicator can by the side that immobilization material sprayed to the first sheet (or other medium paper) material 402 applies it.Spraying from applicator can be lasting or be interrupted, and can produce the dotted line of immobilization material, striped, point or ellipse.By motion applicator or design and pattern can be applied by being moved relative to sprayer by the first flaky material 402.
This immobilization material can be such as adhesive, heat-barrier material 216 or other materials or coating, such as, have fixing or cementing property those.Discussed in detail before various expandable heat-barrier material 216.Further, this immobilization material can be hot melt or non-hot melt adhesive or condensability adhesive, such as hot-melt adhesive, adhesive based on starch, natural polymer adhesive, based on cellulosic adhesive, glue, PUR, polymeric binder, synthetic material, foams etc.
This immobilization material can transport to applicator from pipeline 422, and this can occur in and regulate and preparation station 432 place.This microballoon or other inflatable heat-barrier materials can with starch, binding agent or other additive materials in this adjustments with prepare station 432 place's premixed and transport to the applicator of the first work station 420 again.
In some embodiments, this applicator can, by pattern paint first flaky material of the coating of heat-swellable or other paper media (being called single sheet herein), then be heated to cause the coating of this heat-swellable to expand with microwave applicator.Then this single sheet through coating and patterning can be sent to the final products being processed into the coating with this patterning.
In another embodiment, also by such as the second flaky material 404 being pressed on the first flaky material 402, this first flaky material 402 can be combined with the second sheet material 404.By the immobilization material obtained in double-deck flaky material 426 (the one side groove sheet material such as shown in Fig. 4 C), the second flaky material 404 can be fixed on the first flaky material 402.Alternately or additionally, the smooth double-layer lamination thing of different base material discussed before can being of this laminated material 426.
Then this double-deck flaky material 426 can be made through industrial microwave heater 427, and it can be built near the conveyer belt after the first work station 420, to apply microwave (Figure 12) to this double layer sheet.
Preferred moisture from regulate and preparation preparation station 432 mixture in be retained in heat-barrier material 216 that this heat-swellable opens.This moisture easily absorbs the microwave power launched from microwave applicator 427, and Fast Heating thus, the heat-barrier material 216 of the adhesive/coating causing this applicator to apply expands in suitable treatment conditions (such as temperature, pressure and time).
This microwave applicator 427 preferably about 915MHz or about 2.45GHz place near or at some other acceptable operating at frequencies plate.This microwave applicator 427 also can be the microwave applicator comprising microwave applicator of tubular type or other types.The industrial microwave heater of these types may be used for aqueous mixture or the product that drying comprises the polar molecule of the electromagnetic energy absorbed in microwave field, causes heating and the drying of water, and sometimes causes the boiling to product.If flat, the narrow open slot between two plates that this microwave applicator 427 can be included in microwave wave guide or passage is passed through, seen in Figure 12-13 for making paper web or other substrates.If this microwave applicator is tubulose, the product with tubulose or circular cross section can pass through the microwave applicator of the heater being applicable to structure.This microwave applicator 427 not only can this paper web dry or substrate, but also can to activate and expand between this ply of paper or the expandable material of pre-applied on it.
Heat-swellable coating in this base material or in product and adhesive heat in this microwave applicator diverse location point place that can design by different way or be configured in manufacture method process, as with reference to Figure 11 example and discussion.
This microwave applicator 427 can heat packs can within the scope of 100-500 °F containing the temperature of the substrate of thermally expansible material (such as microballoon) or product.This temperature can according to the type of microballoon used and this material substrate of heating and the thickness of adhesive largely to change.Such as, some conventional microballoons are heated at the temperature of 200-350 °F of scope.
This double layer material sheet material 426 can leave this machine system 400 and carry out other process (such as die-cut, printing, regulate, bending etc.) to obtain final products.Alternately, this double-deck flaky material 426 can be processed by the machine system 400 of the following stated further.Notice that the work station that this microwave applicator 427 can alternately process along this machine system 400 downstream is further located.Such as, can stage below apply expandable adhesive or coating in the process, this microwave applicator 427 some location points that can be positioned at thereafter sentence this adhesive/coating that expands, as discussed later.Therefore the position of this microwave applicator 427 is not critical, but in order to some positions of reason of the parts that easily connect this machine system 400 may be better, or other steps of this manufacture and product preparation process can be applied better in some positions.
This double layer material sheet 426 can be sent to the second work station 430.This second work station 430 can comprise applicator, and it can by the side of this double layer sheet 426 of immobilization material paint.Such as, this applicator can by the second flaky material 404 side of this double layer sheet 426 of immobilization material paint, and it can be the liner side of this double layer sheet 426.Alternately or additionally, this applicator can by the first flaky material 402 side of this double layer sheet 426 of immobilization material paint.This immobilization material can be or comprise expandable adhesive or heat insulating coat.Such as, this immobilization material can be adhesive, such as hot-melt adhesive, adhesive based on starch, natural polymer adhesive, based on cellulosic adhesive, glue, PUR, condensability glue, adhesive, synthetic material, polymeric binder, foams etc.
This immobilization material can be applied by spraying, brushing or other modes.Such as, this applicator can have the hopper and metering outfit that comprise immobilization material.This hopper can be positioned at paper is supplied to the second work station 430 roller near with the top of the ripple having corrugation rolls to produce this immobilization material paint or groove.As the second example, applicator can apply immobilization material by being sprayed to by immobilization material on the first flaky material 402, second flaky material 404 or the side of the two.Spraying from applicator can be continuous print or interval, and can produce the dotted line of immobilization material, striped, point or ellipse.By mobile applicator or design and pattern can be applied by being moved relative to sprayer by the first flaky material 402.
This double-deck flaky material 426 can combine with the 3rd flaky material (it can be such as the second liner), such as, by being pressed in double layer sheet 426 by the 3rd flaky material 434, produces three-layer tablet shape material 434.
This three-layer tablet shape material 434 can be made up of usually smooth material, and it has certain rigidity and can bend or delineate to help the line along setting to bend.Such as, this three-layer tablet shape material 434 can be one side internal lining paper, such as but not limited to brown paper.This material can be processed, such as, the water-fast of increase or fluidity are provided, and can print in the selected part of this material.Alternately or additionally, the 3rd flaky material 434 can be made up of corrugated cardboard, hardboard, SBS, MP metallized paper, plastics, polymer, fiber, aforesaid compound, mixture or composition etc.3rd flaky material 434 can be made up of the material of reusable edible, or can be decomposable, biodegradable or these combination.
This second work station 430 can be printing machine, coating machine or laminating machine.The layer of this multi-layer sheet (such as three-layer tablet shape material 434) can improve structural integrity and the outward appearance of obtained packaging material.This microwave applicator 427 can alternately be arranged in the second work station 430 place or its near with microwave energy exposure this multi-layer sheet by second work station 430 (such as at lamination process).Then this microwave applicator 427 can Fast Heating this make it expand thus as the adhesive comprising heat-swellable component (such as microballoon) on immobilization material paint multi-layer sheet or coating.This multilayer chip material leaving the second work station 430 can regulate further, cut or die-cut and stacking with transport, as with reference to Figure 11 by discussed in detail.Then can be container 100 by this multilayer chip material forming.
General office micro-wave oven and test panel industrial microwave heater has been used to carry out several laboratories feasibility test.Use E-groove single-face corrugated plate and F-groove single wall corrugated board as the substrate in these tests.Results from these tests confirm activation and the heat-swellable adhesive of expanding fixture between medium and liner and the feasibility of coating.This test also show the minimizing of dry enhancing and steam energy consumption.This test further discloses the microwave energy field that is applicable in microwave applicator indoor design for the optimum expansion usefulness realizing this heat-swellable adhesive and coating and to improve speed of production be thus useful.
As a kind of example of the pre-activation method described before, Fig. 5 is the side view of void apparatus 500, can with the material of the coated heat-swellable of pattern be applicable to arbitrarily by its base substrate 503.This void apparatus 500 can independently use or be integrated in the part of automated manufacturing system.This void apparatus 500 can comprise vacuum motor 510, and it rotates with the traffic direction needed for conveyer belt 513, and this direction is in Figure 5 with the display of solid black arrow.
Blank or through printing base substrate 503 can be single or multiple lift flaky material, such as but not limited to the flaky material prepared with above-mentioned machine system 400, can be passed through void apparatus 500.In a kind of example, this base substrate 503 is in cup or in double-wall cup.FE Glue Gun (or applying or printing station) 505 or other applicators 505 can apply the material 216 of the wet heat-swellable comprising microencapsulation particle 506.Microwave applicator 427 or other heat energy sources provide energy with activation and this particle 506 that expands, and make this particle expand into expanded granular 508.This expanded granular 508 can form the pattern of specific desired height on base substrate 503.The height of this expanded granular can necessarily change from degree.
The vacuum motor 510 of Fig. 5 can be used for helping to make this base substrate 503 keep smooth to allow the heat-swellable coating of appropriate amount with layout homogenous application.In order to meet the suitable input of this wet granular 506, drive the controller of vacuum motor 510 closely can control the RPM of vacuum motor.Alternately or additionally, the switch of FE Glue Gun or coating station 505 can be controlled, such as, intermittently the particle comprising thermally expansible material of appropriate amount is routed on each corresponding base substrate with layout.
Rammer can be used or become size device (sizing device) 509 (such as wheel, block or pressure roller) and this expanded granular 508 is tamped relatively homogeneous preset height.Then visual inspection or detection system 512 can detect the quality of expanded granular 508, for carrying out quality control before further processing, such as, by double-wall cup or container forming machine.
Fig. 6 is the modification axle 600 that adaptation has one or two raised band 605, has vacuum hole 601 (wherein Fig. 6 only show a raised band as an example) in each raised band 605.This raised band 605 can fit in the At The Height with the uniform height of expanded granular 508 shown in Fig. 5 approximate (or substantially equal).The height of this raised band 605 approximates or smooth and be wrapped in the upper cup outer wrapping formed for the suitable coupling of double-wall cup of surrounding of this axle 600 rightly with each base substrate 503 making to have expanded granular 508 a little more than the height of this expanded granular 508.
Fig. 7 is the outer wall base substrate 703 of the patterning coating 715 with thermally expansible material 216, and it has gap 723, and a raised band 605 of axle 600 can be positioned through this gap.By this way, this vacuum hole 601 still can produce enough suction in the smooth part of the inside of this base substrate 703, uses it to keep this to be wrapped in the axial base substrate 703 of the heart to be transmitted.After this base substrate 703 is shaped to the outer wrapping of cup, single-walled cup is placed in shaping parcel to prepare double-wall cup in automation process.
Fig. 8 is the perspective view of the void apparatus 800 using the axle 600 such as described with reference to Fig. 6, and this conveyer has the base substrate of the thermal expansion particle sticked to inside base substrate for transmitting.This void apparatus 800 can receive the base substrate 503 of the void apparatus 500 from Fig. 5.An one raised band 605 can be positioned in the gap 723 in the thermal expansion pattern 715 of the thermal expansion particle of this base substrate 503 by this axle 600, and another raised band 605 is positioned under the seam region of the parcel of this base substrate 503, such as the edge of this base substrate meets and forms parcel together herein.The vacuum hole 601 of this raised band helps this parcel to remain on around axle 600, makes it possible to taken off from void apparatus 800 by base substrate 503 and base substrate 503 is transported through this glass of outer wrapping forming step.
In step taked in figs. 5 to 8, manufacturing machine assembly, it can operate and construct double-wall cup as follows: wherein before this container of structure (double-wall cup), first make the thermally expansible material 216 in substrate (base substrate 503) expand, this is being called pre-activation method before.As present by explaining, in rear activation method, double-wall cup also can be constructed to construct this heat insulation double-wall cup by the thermo-expandable microspheres first constructing this cup and then exist in this thermally expansible material 216 that expands in machine assembly method.
As the unrestricted example of one of a lot of rear activation method, Fig. 9 and 10 shows the perspective view of cup formation machine 900.This cup formation machine 900 can comprise one group of FE Glue Gun 505, coaster 908, bar 910 and belt 912.This machine 900 also can comprise wheel 1001, and it operates and is connected on bar 910 and comprises multiple spoke 1010.This takes turns 1001 can to rotate with the direction of spoke 1010 tangent, and the cup simultaneously when being engaged by bar 910 in this glass of axle 600 can rotate around the axle parallel with this spoke 1010.Axle 600 can be connected to the end of each spoke 1010.In the embodiment illustrated, the interior cup 1020 of double-wall cup prepares to be bonded to (Figure 10) in the outer wrapping 1022 of double-wall cup.
Along with pulling belt 912, coaster 908 rotates with the direction of narrow arrow, this bar 910 is also rotated, the interior cup 1020 then on mandrel 600.Along with interior cup 1020 rotates, thermally expansible material 216 sprays on the inwall of interior cup 1020 by FE Glue Gun 505.This material applies rifle or nozzle is eccentric so that multiple independent adhesive line 216 can be made to be applied to the outside of interior cup 1020, has default interval between line.The revolutions per (RPM) of bar 910 velocity of rotation can comprise close tolerance, and the such as time can make the suitable spacing of coating from rifle 505 and be uniformly distributed: not too thick also not too thin.This is taken turns 1001 and can rotate subsequently with cup 1020 in next spoke of repeat function, and such as turn clockwise (direction with thick arrow).Then each cup 1020 in coating can be inserted immediately in outer wrapping thereafter, form double-wall cup thus.
Then the double-wall cup of formation can be transported, stacking, pack and be placed in carton, this carton will transport on chassis.As explained with reference to Figure 11, except except before this cup is shaped, each work station place also after this cup is shaped can apply microwave or other heat activates after carrying out this thermally expansible material 216.
Figure 11 is the flow chart 1100 of multiple work stations of this packaging product manufacturing method for container, at the plurality of work station place or can apply the thermo-expandable microspheres (or other heat-swellable micro particulate materials) that microwave thermal adds in package base and/or container as a part for basalis for the moment betwixt and expand.This preparation method is included between work station and transmits package base or container.Work station is numbered in order and does not mean that and need certain order, unless when indicating order.Microwave thermal can be applied to this substrate or container in more than one work station place in this manufacturer's combined method process, make this thermally expansible material can carry out the final degrees of expansion expanding to realize needed for this thermally expansible material in more than one fabrication stage process.
Except the first work station 1120, this machine system 400 can comprise printing work station 1125, and it is configured the container assembling the most at last with preparation to transport for printing substrate used.This printing-ink can comprise the microencapsulation microparticle of heat-swellable.In printing process or microwave applicator 427 can be used after the printing to heat this flaky material and immobilization material makes the microballoon in this printing material or other heat-swellable compounds at least to a certain degree expand.
As with reference to Fig. 4 discusses, the second work station 430 can be configured to be applied with arbitrary graphic pattern by coating or be laminated on the package base material that formed.This coating or laminating method can comprise and apply other sheet material layer or coating/laminated multilayer substrate, to improve structural integrity and the outward appearance of obtained packaging material.Then microwave applicator 427 can be used to heat this flaky material of applying in lamination process and coating at least to a certain degree expands to make the microballoon in this coating and/or immobilization material or other heat-swellable compounds at some location point places subsequently.
Die cutting station 1140 can be configured to carry out die-cut (rotate die-cut plane is die-cut or the two), its result can comprise the base substrate 1143 that can be shaped as final products.This base substrate can comprise the base substrate 1143 of in particular, for example cup, container, plate, cell-shell, plate, sack or container for drink handle.Then microwave applicator 427 can be used to heat this base substrate with the expansion making the compound of the microballoon in any coating of this base substrate 1143, lamination or immobilization material or other heat-swellables carry out at least to a certain degree when not yet expanding.
Shaping work station 1150 can be configured to form final products 1153 by base substrate 1143.Then microwave applicator 427 can be used to heat these final products 1153 with the expansion making the compound of the microballoon in any coating of these final products 1153, lamination or immobilization material or other heat-swellables carry out at least to a certain degree when not yet expanding.
Vanning work station 1160 can be configured to be packaged into by these final products 1153 in cartons (such as conventional fluting carton).The output of this vanning work station 1160 comprises the stacking carton 1163 filling final products 1153.In vanning technical process or microwave applicator 1127 can be used after it is stacking to heat this cartons 1163 whole with the expansion making the compound of the microballoon in any coating of these final products 1153 be contained in cartons 1163, lamination or immobilization material or other heat-swellables carry out at least to a certain degree when not yet expanding.
When container be cup or container, the pipeline of the part as shaping work station 1150 can be transported through.Microwave applicator 427 can be orientated a part that about this cup or container be advanced through its this pipeline with in still unexpanded situation by this cup or container by this Cemented filling with the way of vanning and palletize (palletizing) in heat this thermally expansible material.
Palletize work station 1170 can be configured to the carton of this stacking product container to receive on chassis.The chassis that microwave applicator 427 can be used to heat stacking carton or container is to make to be contained in microballoon in the single product in carton or other heat-swellable compounds at least to a certain degree expand when not yet expanding, but each for whole chassis.Then this chassis is loaded on truck to transport at transport station 1290.
Figure 12-15 comprises each schematic diagram that the microwave that can be used for this microwave applicator 427 applies wave guide.This microwave applicator 427 can be arranged on and this cardboard, flaky material or other substrates are transported through one or more conveyer belts 1213 of this machine system 400 around.This microwave applicator 427 can be plate, has slit 1405, and this breadth, sheet material or blank of material are by this slit.Figure 14 shows the side view perpendicular to machine direction, and Figure 15 shows front view or the machine direction view of this microwave applicator 427.This microwave applicator 427 can comprise multiple microwave waveguide passage, and it links together the surface area providing increase, uses it that microwave energy is applied to this flaky material.In Figure 12-15, the size of the microwave applicator 427 of display is only exemplary, does not represent restriction.When for 427 use tubular type microwave applicator, the cross section of this tubular type applicator is generally circular, and there is opening by this applicator to allow that product passes through.
Figure 16 is in one approach for the preparation of the flow chart of the example of the method for multilayer chip material, and the method comprises heating using microwave multilayer chip material with the expansion of the adhesive or coating that accelerate heat-swellable.Dotted line in Figure 17 represents the Alternative routes of the one or more steps can walking around the method.At frame 1600 place, the first flaky material can be loaded in machine system 400, and it can be undulatory.At frame 1610 place, can by the side of immobilization material paint first flaky material.This immobilization material can be adhesive or the coating of heat-swellable, and it can comprise starch and microballoon or some and form.At frame 1620 place, can by the second flaky material paint first flaky material.If this double-deck flaky material has the immobilization material comprising heat-swellable coating, so this double-deck flaky material can expand to make this heat-swellable adhesive/coating at frame 1630 place Microwave Heating.At frame 1640 place, this double-deck flaky material can be transmitted to be processed into final products, such as by printing, die-cut, to take off and/or assembled from base substrate.
At frame 1650 place, can by the side of second this double-deck flaky material of immobilization material paint.This second immobilization material can be adhesive or the coating of heat-swellable, and it can comprise starch and microballoon and/or some other compositions be applicable to.After this step, this multilayer chip material can skip forward some steps, just carries out heating and/or lamination when first not applying the 3rd sheet layer material.Otherwise, when frame 1660, the 3rd flaky material is applied to the exposed side of the first or second flaky material.At frame 1670 place, if the second immobilization material is adhesive or the coating of heat-swellable, so can expand with the adhesive or coating that make this heat-swellable with this multilayer chip material of Microwave Heating.At frame 1680 place, can by this multilayer chip material lamination.That is, if first, second, and third flaky material is applied to together, so can by laminated together for this first, second, and third flaky material at frame 1680 place.At frame 1640 place, then this multilayer chip material or substrate can be processed into end product, it can comprise printing, die-cut, removing base substrate and/or assembled.Additionally or alternately, can these multiple stages (or work station) arbitrarily (include but not limited to print, coating and/or lamination, die-cut, be shaped, the chassis of case RSC and prepare carton or container is for transport) place applies microwave to this multilayer chip material or substrate.
Such as, obtained multilayer chip material can be processed further, such as, by applying packaging base substrate to flaky material and subsequently this packaging base substrate being removed and base substrate be assembled into end product (frame 1640).The end product (it can be such as cup, container handle, container sleeve, cell-shell, plate etc.) of the method can be made up of one or more layers of one or more previous materials.When using multilayer material, can in conjunction with (such as but not limited to lamination, gummed or otherwise fix) together to improve intensity.
As mentioned above, the use of heat-barrier material 216 can help to be reduced in and keep the volume of laminated substrates and the thickness preparing the required paper such as container, sleeve while the sensation providing rigidity higher for consumer.This heat-barrier material 216 also can improve the heat-insulating properties of this container and help beverage or food to be incubated or the cold insulation longer time according to application.This substrate can be made up of natural fiber, synthetic fibers or the two (such as having or do not have the hardboard of recycled fibre, natural or bleached paper or natural or bleached paperboard).Characteristic sum method disclosed herein is jointly for conventional transformation methods adds significant flexibility and versatility and widened packaging and transform the obtainable selection of business to solve any restriction of substrate supply in supply chain.Such as, the paper that the volume that the laminate of two thin internal lining papers can be used to be prepared in have expandable adhesive between thin paper is larger, it has identical with thicker cardboard or better thermal insulation.Hot interlayer outer wrapping can be made up of this material, and it can have the flexibility larger than cardboard.As other example, by the SBS plate being coated with polymer of low specification and the newsboard of clay can be coated with and expandable adhesive therebetween makes composite.As another example, goblet for heat or cold fluid can be manufactured to comprise the laminated material of two different low specification cardboards and expandable adhesive therebetween.This expandable adhesive can activation in lamination process, before or after cup is shaped.This expandable adhesive also can apply to realize differential expansion with pattern and realize rigidity locally thus and insulate improving.
Although described multiple embodiments of the present invention, a lot of more embodiment, modification and embodiment have also been feasible within the scope of the invention, and this will be apparent to those of ordinary skill in the art.Such as, unless there are specified, the step of method that is that show in accompanying drawing or that reflect in claim below needs specific execution sequence to be presented really.Disclosed step is listed as an example and is made it possible to perform other or different step, or this step can perform with different orders.

Claims (22)

1. a preparation method, comprising:
Base substrate is placed in conveyor system;
Along with this base substrate moves to below applicator by the belt of this void apparatus system, the particle of heat-swellable is applied on this base substrate with pattern form;
Heat this particle with microwave applicator to expand to make this particle; And this base substrate is transported to product forming machine along this conveyor system, this base substrate completed knocked down products of this product forming machine.
2. the method for claim 1, comprises further:
Before this base substrate is transported to product forming machine, this particle through expansion is tamped homogeneous height by becoming size device.
3. the method for claim 1, wherein apply this particle and be included in leaving gap in the pattern of the particle applied further, this gap is configured to the raised band corresponding to axle, and this axle holds this base substrate with vacuum from applying particle side, thus is moved in this formed product machine by this base substrate.
4. the method for claim 3, comprises further:
The belt speed controlling this void apparatus system with by this particle with this pattern homogenous application on each base substrate.
5. the process of claim 1 wherein that this base substrate comprises outer wrapping, and this product comprises double-wall cup.
6. base substrate mobile device, comprising:
Conical butt axle; With
The raised band that the side of this conical butt axle is formed, this raised band comprises the vacuum hole being suitable for the side holding base substrate by pull of vacuum, and what this side of described base substrate comprised the microencapsulation particle of expansion applies pattern.
7. the base substrate mobile device of claim 6, wherein this raised band is configured to match with the gap stayed in pattern that applies of the microencapsulation particle of the expansion of this side at described base substrate.
8. the base substrate mobile device of claim 6, wherein the height of this raised band on the surface of this conical butt axle comprises the height of the microencapsulation particle at least about this expansion.
9. the base substrate mobile device of claim 6, wherein this raised band comprises the first band, comprises further:
The second band formed in the another location of this side of this conical butt axle, it is for aiming at the outer peripheral seam of this base substrate.
10. manufacture the method between the inner walls and the outer with the double-wall cup of thermally expansible material, comprising:
For double-wall cup forms outer wrapping;
Cup in being formed;
With applicator by adhesive application on the outer surface of this internal layer, this adhesive has the heat expandable particles of microencapsulation;
In cup-forming machine device, transmit this interior cup and be inserted in this outer wrapping; With
Heat this double-wall cup with microwave applicator to expand to make the particle in this adhesive.
The method of 11. claims 10, wherein this adhesive comprises coating.
The method of 12. claims 10, comprises further:
By this double-wall cup by pipeline transmission, also subsequently its stacking preparation is used for pack through microwave applicator with this particle that expands.
The method of 13. claims 12, wherein should heat this double-wall cup with microwave applicator while stacking with other double-wall cups.
The method of 14. claims 12, comprises further:
Double-wall cup is packaged in carton, wherein heats each carton with the heat-swellable adhesive activated and expand in this double-wall cup with microwave applicator.
The method of 15. claims 14, comprises further:
The stack of cartons of this double-wall cup with heat-swellable adhesive is laminated on chassis, wherein with the adhesive that microwave applicator activates and expands in this glass.
The method of 16. claims 10, comprises further:
Mandrel passes through this applicator so that by adhesive application on the outer surface of this internal layer; With
The speed controlling to rotate is with this adhesive of homogenous application.
The method of 17. claims 10, wherein this microwave applicator is selected from by the group of the dissimilar industrial microwave heater formed for the tubular type of radiation single cup stream or a pile cup, flat and non-ducted microwave applicator.
18., for the manufacture of the method for package base material and container, comprising:
At least the first and second flaky materials are passed in conveyer type machine system;
Substrate is formed by this first and second flaky material and by the adhesive comprising the heat expandable particles of microencapsulation between the first and second flaky materials;
Packing container is formed by this substrate;
Transmit the packing container that this is to be transported; With
Pass at this, to be formed and some location point microwave applicators in transport process heat this adhesive with the heat expandable particles of this microencapsulation that expands, wherein be selected from by printing, coating or lamination, die-cut, be shaped, one or more work station place of group that stacking, vanning and palletize are formed or use this microwave applicator in-between.
The method of 19. claims 18, wherein this microwave applicator comprise around this substrate process or the microwave applicator in space of this packing container process.
The method of 20. claims 18, comprises this substrate of process further, comprising:
Apply on this multi-layer substrate with the material of the heat expandable particles comprising described microencapsulation or print;
This multi-layer substrate die-cut is to prepare base substrate; With
This packing container is formed by this base substrate.
The method of 21. claims 20, wherein this packing container is selected from by the following group formed: set up box container, hot and cold cup, cell-shell, groove sleeve, sack and chest.
The method of 22. claims 20, comprises further:
Die-cut this multi-layer substrate of lamination before after the printing.
CN201380047504.2A 2012-07-20 2013-07-17 Microwave heating of heat-expandable materials for making packaging substrates and products Pending CN104903063A (en)

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