CA2264969A1 - Spice packaging - Google Patents

Spice packaging Download PDF

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Publication number
CA2264969A1
CA2264969A1 CA 2264969 CA2264969A CA2264969A1 CA 2264969 A1 CA2264969 A1 CA 2264969A1 CA 2264969 CA2264969 CA 2264969 CA 2264969 A CA2264969 A CA 2264969A CA 2264969 A1 CA2264969 A1 CA 2264969A1
Authority
CA
Canada
Prior art keywords
layer
film
facing
opp
pet
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.)
Abandoned
Application number
CA 2264969
Other languages
French (fr)
Inventor
Robert Renihan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Acorn Packaging Inc
Original Assignee
Acorn Packaging Inc
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 Acorn Packaging Inc filed Critical Acorn Packaging Inc
Priority to CA 2264969 priority Critical patent/CA2264969A1/en
Publication of CA2264969A1 publication Critical patent/CA2264969A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B29C66/712—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined the composition of one of the parts to be joined being different from the composition of the other part
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B29C66/72341—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer for gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B29C2795/00—Printing on articles made from plastics or substances in a plastic state
    • B29C2795/002—Printing on articles made from plastics or substances in a plastic state before shaping
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/08—Copolymers of ethylene
    • B29K2023/086—EVOH, i.e. ethylene vinyl alcohol copolymer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • 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
    • B29L2009/00—Layered products
    • 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
    • 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
    • B29L2031/7162—Boxes, cartons, cases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2329/00—Polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals
    • B32B2329/04—Polyvinylalcohol
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/14—Printing or colouring
    • B32B38/145—Printing
    • 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
    • B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D2565/38—Packaging materials of special type or form
    • B65D2565/381—Details of packaging materials of special type or form
    • B65D2565/387—Materials used as gas barriers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

An improved packaging material comprises an external layer of either polypropylene film or polyester film having an inner surface and an outer surface, a layer of ink printed on the inner surface of either the polypropylene film or the polyester film, a layer of adhesive applied over the layer of ink, an interior layer of co-extruded film comprising:
(i) a first polyethylene film layer;
(ii) a tie layer;
(iii) an EVOH layer;
(iv) a tie layer; and (v) a second polyethylene film layer;

such that said layers form a single sheet with either an externally-facing polypropylene layer or an externally-facing polyester layer and an internally-facing polyethylene layer.

Description

LAMINATED FILM PACKAGING AND PROCESS
FOR PREPARING LAMINATED FILM PACKAGING
Background of the Invention A variety of thermoplastic films have been used for some time in connection with packaging of various articles including certain food products. The packaging must be resistant to physical abuse and stress, must preserve the contents of the package from oxidation, and prevent the escape of liquids or gases from the contents to the exterior. The packaging must display an attractive appearance, particularly when used for retail sale of the products.
Many common spices exude extremely mobile oils which can penetrate plastic films and cause a package made from layers of such films to delaminate. Typically, the layers fall apart when these oils attack the inks (used for printing) between one or more of the film layers, which then degrade. The packaging must resist attack from external oxygen as well as prevent escape of odours and oils from the spices 2 0 themselves within the package. For several decades, the main commercially successful structure for packaging such spices has comprised the following structure (listed from exterior to interior):
(a) Saran (i.e. polyvinylidene chloride) coated cellophane film;
2 5 (b) ink;
(c) adhesive;
(d) Saran-coated cellophane film;
(e) adhesive; and (fj polyethylene film.
Although this packaging has proven to be effective, it would be advantageous to produce a package which is less expensive by reason of having fewer layers, or providing at least as good protection as the prior art packaging with respect to escape ~of oils from the spices to the outside, and oxidation of the spices from the outside. The materials to be used in the packaging must be capable of running well on packaging machines and, when formed into a package, must be sufficiently strong so as not to deform or rip when placed on a peg in a grocery store.
Preferably, the external layers of the packaging are heat resistant while the internal layers will soften when heated moderately in order to form a good seal.
Summary of the Invention l0 A new packaging structure has been devised which provides essentially the same level of protection as the prior art at less cost. From the exterior of the package to the interior, the layers of the packaging comprise:
(a) either oriented polypropylene film (OPP) (oriented in two directions) or oriented polyester film (PET) (oriented in two directions);
(b) ink;
(c) adhesive; and (d) co-extruded film with EVOH barrier layer and polyethylene seal 2 0 layer.
EVOH is an acronym for ethyl vinyl alcohol.
The co-extruded film typically comprises:
(i) a polyethylene layer;

(ii) a tie layer;

(iii) an EVOH layer;

(iv) a second tie layer;
and 3 0 (v) a polyethylene layer.

Thus, an EVOH layer is sandwiched between tie layers and polyethylene layers.

Accordingly, in a major aspect, the invention comprises packaging material comprising:
(a) an external layer of either polypropylene film (OPP) or polyester film (PE'I~ having an inner surface and an outer surface;
(b) a layer of ink printed on the inner surface of either the polypropylene film (OPP) or the polyester film (PE'I~;
(c) a layer of adhesive applied over the layer of ink; and (d) an interior layer of co-extruded film comprising:
(i) a first polyethylene film layer;
(ii) a tie layer;
(iii) an EVOH layer;
2 0 (iv) a tie layer; and (v) a second polyethylene film layer such that said layers form a single sheet with either an externally-facing polypropylene layer (OPP) or an externally-facing polyester layer (PE'I~ and an internally-facing polyethylene layer.
In a further aspect of the invention, the EVOH layer is sufficiently thick to ensure a pin-hole opening-free, continuous barrier to mobile oils in spices.
In a further aspect, the interior layer of the co-extruded film is of at least 100-gauge thickness.

In a further aspect, either the polypropylene film (OPP) or the polyester film (PE'I~
comprises two layers of either polypropylene film (OPP) oriented at right angles or polyester film (PE'I~ oriented at right angles.
In a further aspect, either the oriented polypropylene film (OPP) or the oriented polyester film (PE'I~ has a thickness in the range of from 50-gauge to 200-gauge.
In a further aspect, the invention comprises a method of creating packaging suitable for materials which require protection from atmospheric oxygen, which are odiferous, or which exude natural oils corrosive to packaging material, comprising:
1) creating two mirror image pieces of packaging material comprising:
(a) an external layer of either polypropylene film (OPP) or polyester film (PE'I~ having an inner surface and an outer surf ace;
(b) a layer of ink printed on the inner surface of either the polypropylene film (OPP) or the polyester film (PE'I~;
(c) a layer of adhesive applied over the layer of ink; and (d) an interior layer of co-extruded film comprising:
2 5 (i) a first polyethylene film layer;
(ii) a tie layer;
(iii) an EVOH layer;
(iv) a tie layer; and (v) a second polyethylene film layer such that said layers form a single sheet with either an externally-facing polypropylene layer (OPP) or an externally-facing polyester layer (PET) and an internally-facing polyethylene layer;
2) placing the two mirror image pieces with the internally-facing polyethylene layers facing each other and in contact around their perimeters; and 3) applying heat to create an airtight seal by fusing the internally-facing polyethylene layers around their perimeters without melting the externally-facing polypropylene layers.
In a further aspect, the invention comprises a method of creating packaging material comprising:
a) printing a layer of ink on one side of a sheet of either oriented polypropylene film (OPP) or oriented polyester film (PET);
b) applying an adhesive layer over the layer of ink;
c) drying the adhesive; and 2 5 d) bonding a co-extruded film comprising an EVOH barrier layer and a polyethylene seal layer to the adhesive layer under pressure.
Detailed Description of the Invention The overall layer (OPP or PET) is first printed using any print process which can employ inks suitable for laminations. These inks must allow an interlaminar bond greater than 150 grams/inch to develop between the outer layer and the inner EVOH coextrusion. Typical processes include flexography, rotogravure, and lithography.
The printed outer layer is then bonded to the EVOH coextrusion by application of the adhesive to either film, although it is typically more convenient to apply the adhesive to the more heat resistant outer layer. The application process can be any one which will lay down 1.0 - 1.8 pounds of adhesive per ream of film (1 ream =
432,000 square inches).
Typical application processes include use of an engraved or smooth application roller which carries the adhesive onto the film. Intimate contact is assured by passing the film through a nip with the application roller on one side and an impression roller on the other. If the adhesive is solvent or water-based, the solvent or adhesive is dried by passing the film through an oven. Substantial quantities of hot air evaporate the solvent or water. In the case of solvent-less adhesives, no drying oven is needed.
The adhesive loaded film is then combined with the other film in a nip which is 2 0 typically heated to promote the bonding action of the adhesive. This produces a combined (laminated) web which is then trimmed to finished size.

Claims (7)

1. Packaging material comprising:
(a) an external layer of either polypropylene film (OPP) or polyester film (PET) having an inner surface and an outer surface;
(b) a layer of ink printed on the inner surface of either the polypropylene film (OPP) or the polyester film (PET);
(c) a layer of adhesive applied over the layer of ink;
(d) an interior layer of co-extruded film comprising:
(i) a first polyethylene film layer;
(ii) a tie layer;
(iii) an EVOH layer;
(iv) a tie layer; and (v) a second polyethylene film layer such that said layers form a single sheet with either an externally-facing polypropylene layer (OPP) or an externally-facing polyester layer (PET) and an internally-facing polyethylene layer.
2. The packaging material of Claim 1, wherein the EVOH layer is sufficiently thick to ensure a pin-hole opening free, continuous barrier to mobile oils in spices.
3. The packaging material of Claim 1, wherein the interior layer of co-extruded film is of at least 100-gauge thickness.
4. The packaging material of Claim 1, wherein either the polypropylene film (OPP) or the polyester film (PET) comprises either two layers of polypropylene film (OPP) oriented at right angles or two layers of polyester film (PET) oriented at right angles.
5. The packaging material of Claim 4, wherein either the oriented polypropylene film (OPP) or the oriented polyester film (PET) has a thickness in the range of from 50-gauge to 200-gauge.
6. A method of creating packaging suitable for materials which require protection from atmospheric oxygen, which are odiferous, or which exude natural oils corrosive to packaging material, comprising:
1) creating two mirror image pieces of packaging material comprising:
(a) either an external layer of polypropylene film (OPP) or an external layer of polyester film (PET) having an inner surface and an outer surface;
(b) a layer of ink printed on the inner surface of either the polypropylene film (OPP) or the polyester film (PET);

(c) a layer of adhesive applied over the layer of ink;
(d) an interior layer of co-extruded film comprising:
(i) a first polyethylene film layer;
(ii) a tie layer;
(iii) an EVOH layer;
(iv) a tie layer; and (v) a second polyethylene film layer such that said layers form a single sheet with either an externally-facing polypropylene layer (OPP) or an externally-facing polyester layer (PET) and an internally-facing polyethylene layer;
2) placing the two mirror image pieces with the internally-facing polyethylene layers facing each other and in contact around their perimeters;
3) applying heat to create an airtight seal by fusing the internally-facing polyethylene layers around their perimeters without melting either the externally-facing polypropylene layers (OPP) or the externally-facing polyester layers (PET).
7. A method of creating packing material comprising:

a) printing a layer of ink on one side of either a sheet of oriented polypropylene film (OPP) or a sheet of oriented polyester film (PET);
b) applying an adhesive layer over the layer of ink;
c) drying the adhesive;
d) bonding a co-extruded film comprising an EVOH barrier layer and a polyethylene seal layer to the adhesive layer under pressure.
CA 2264969 1999-03-08 1999-03-08 Spice packaging Abandoned CA2264969A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2264969 CA2264969A1 (en) 1999-03-08 1999-03-08 Spice packaging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2264969 CA2264969A1 (en) 1999-03-08 1999-03-08 Spice packaging

Publications (1)

Publication Number Publication Date
CA2264969A1 true CA2264969A1 (en) 2000-09-08

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CA 2264969 Abandoned CA2264969A1 (en) 1999-03-08 1999-03-08 Spice packaging

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140083057A1 (en) * 2012-04-05 2014-03-27 Anheuser-Busch, Llc Methods of transporting decarbonated beer base liquid
US20140373487A1 (en) * 2013-06-24 2014-12-25 Anheuser-Busch, Llc Methods of transporting decarbonated liquid
US9265278B2 (en) 2013-06-24 2016-02-23 Anheuser-Busch, Llc Methods for decarbonating fermented liquids

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140083057A1 (en) * 2012-04-05 2014-03-27 Anheuser-Busch, Llc Methods of transporting decarbonated beer base liquid
US9803163B2 (en) 2012-04-05 2017-10-31 Anheuser-Busch Llc Systems for carbonating customized beverages
US10280388B2 (en) 2012-04-05 2019-05-07 Anheuser-Busch, Llc Systems and methods for customized fermented beverages
US20140373487A1 (en) * 2013-06-24 2014-12-25 Anheuser-Busch, Llc Methods of transporting decarbonated liquid
US9265278B2 (en) 2013-06-24 2016-02-23 Anheuser-Busch, Llc Methods for decarbonating fermented liquids

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