Description:FIELD OF THE INVENTION
[0001] The present disclosure relates to a broad field of blister packaging. More particularly the present disclosure relates to paper based sustainable blister packaging.

BACKGROUND OF THE INVENTION
[0002] Sustainable development is a global objective that targets the societal challenge of climate action, the environment and resource efficiency. An important strategy is the promotion of sustainable packaging, that is, the use of sustainable materials and designs for the packaging of goods. Sustainable packaging—also known as ‘green packaging’, ‘eco-friendly packaging’ or ‘recyclable packaging’, uses ecological materials for packaging purposes, while always bearing in mind that products must be effective and safe for human health and the environment. Pharmaceutical packaging is one market across the globe which is advancing at constant pace. Advancement in research of pharmaceuticals development had always being dependent on the packaging technology. Maintaining integrity of pharmaceuticals during storage, shipment, and delivery is assured by quality of packaging available.
[0003] Role of pharmaceutical packaging is to provide lifesaving drugs, surgical devices, blood and blood products, nutraceuticals, powders, poultices, liquid and dosage forms, solid and semisolid dosage forms. Packaging of pharmaceuticals essentially provides containment, drug safety, identity, convenience of handling and delivery. Pharmaceutical packaging has to balance lots of complex considerations. Leaving behind relatively simple issues such as developing good designs and communicating with customers, pharmaceutical packagers are concerned to more pressing concerns which include fighting with counterfeiting, providing moisture resistance, encouraging patient compliance, ensuring drug integrity and balancing child-resistance and accessibility for the elderly. Issue of environment safety is also key concern for both developed and developing countries packaging industry.
[0004] Plastics are widely used for packaging as it shows superior properties like of non-permeability, inert to environment, durability, lightness, stability and availability. These properties of plastic also make them last in the environment forever and accumulate as solid waste, if not recycled properly. Plastic packaging is becoming increasingly recognized for its damaging environmental qualities. Plastic can take thousands of years to biodegrade, so single-use plastic packaging like pharmaceutical packaging is highly polluting. Even plastic packaging that claims to be recyclable often ends up in landfill – especially with recycling capabilities varying from industry to industry.
[0005] Therefore, there is felt a need for a novel paper based sustainable blister packaging which can at least reduce the usage of non- sustainable blister packaging.

OBJECTS OF THE INVENTION
[0006] It is an object of the present disclosure to provide a novel paper based sustainable blister packaging.
[0007] It is a further object of the present disclosure to provide novel paper based sustainable blister packaging having excellent strength and barrier properties suitable for blister packaging.

SUMMARY OF THE INVENTION`
[0008] Accordingly, in a general aspect the present disclosure provides a paper based sustainable blister packaging.
[0009] In an aspect the present disclosure provides a paper based blister packaging material. The paper based blister packaging material comprises a first layer of paper having thickness in the range of 50 GSM to 200 GSM coated with at least one barrier coating material on one side of the paper and a heat sealing material on another side of the paper. Typically, the barrier coating material is selected from the group of compostable Polyethylene (PE), cellulose based paper and nano clay based barrier coating. The heat sealing material is selected from the group of cellulose and vinyl acrylate based lacquer.
[0010] In another aspect of the present invention, disclosed is a paper based blister. The paper based blister comprises a thermoformed paper based blister packaging material with a plurality of recess formed therein for receiving a product comprising at least three layers and a flat lid comprising at least two layers, an outer 50 GSM paper and a heat sealing material. Typically, the at least three layers comprise a paper having thickness in the range of 50 GSM to 200 GSM coated with at least one barrier coating material on one side of the paper and a heat sealing material on another side of the paper. The thermoformed paper based blister packaging material and the flat lid are heat-sealed together.
[0011] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments.

BRIEF DESCRIPTION OF DRAWINGS THE INVENTION
[0001] The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and, together with the description, serve to explain the disclosed principles:
FIG.1 illustrates an exemplary diagram of a paper based blister packaging material in accordance with the present disclosure.
FIG.2 illustrates an exemplary diagram of a paper based blister packaging material in accordance with the present disclosure.
DETAILED DESCRIPTION
[0002] The following is a detailed description of embodiments of the present disclosure. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0003] Unless the context requires otherwise, throughout the specification which follow, the word “comprise” and variations thereof, such as, “comprises” and “comprising” are to be construed in an open, inclusive sense that is as “including, but not limited to.”
[0004] Reference throughout this specification to “one embodiment” or “an embodiment” means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0005] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[0006] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term “about.” Accordingly, in some embodiments, the numerical parameters set forth in the written description are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable.
[0007] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein.
[0008] All methods described herein can be performed in suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
[0009] The headings and abstract of the invention provided herein are for convenience only and do not interpret the scope or meaning of the embodiments.
[00010] Various terms are used herein. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
[0012] In one aspect the present disclosure relates to paper based blister packaging material. The paper based blister packaging material comprises a first layer of paper having thickness in the range of 50 GSM to 200 GSM coated with at least one barrier coating material on one side of the paper and a heat sealing material on another side of the paper. In an embodiment of the present invention, the barrier coating material is selected from the group of compostable Polyethylene (PE), cellulose based paper and nano clay based barrier coating. In another embodiment of the present invention, the heat sealing material is selected from the group of cellulose based paper and vinyl acrylate based lacquer.
[00011] In an exemplary embodiment of the present invention, the paper is selected from the group consisting of kraft paper incorporated with primary fibers. In another exemplary embodiment of the present invention, the barrier coating material has a thickness in the range of 5 to 30 GSM. In yet another exemplary embodiment of the present invention, heat sealing material has a grammage in the range of 25 to 90 gm/m2.
[00012] In another embodiment of the present invention, the paper based blister packaging material further comprises a lacquer coat having thickness in the range of 5 to 30 GSM.
[00013] In another aspect of the present invention, disclosed is a paper based blister. The paper based blister comprises a thermoformed paper based blister packaging material with a plurality of recess formed therein for receiving a product comprising at least three layers and a flat lid comprising at least two layers, an outer 50 GSM paper and a heat sealing material. The at least three layers comprise a paper having thickness in the range of 50 GSM to 200 GSM coated with at least one barrier coating material on one side of the paper and a heat sealing material on another side of the paper. The thermoformed paper based blister packaging material and the flat lid are heat-sealed together.
[0013] Typically, the barrier coating material is selected from the group of compostable Polyethylene (PE), cellulose based paper, nano clay based barrier coating and the heat sealing material is selected from the group of cellulose based paper and vinyl acrylate based lacquer. the paper is selected from the group consisting of kraft paper. The invention is described in the following by way of examples and with reference to the accompanying drawing.

EXAMPLES
Process: Lamination and Coating are two processes involved in production of complete laminate. Final Material was produced in two stages (1) lamination (2) Coating
(1) First pass Lamination: Structure: Paper Laminated to Compostable PE with water based adhesive

Process Flow
(2) Pass 2: Coating: Sustainable barrier coating on Paper + PE

Parameter Unit Value
Unwind tension 1 kg 10
Corona 1 KW 1.9
Speed of Gravure roll mtrs/min 70
Impression roll pressure Kg/cm2 3
Doctor blade pressure Kg/cm2 2
Line speed mtrs/min 55
Temperature Set Actual
Z1 Deg C 97 97
Z2 Deg C 98 98
Z3 Deg C 99 99
Z4 Deg C 100 100
Hot roll temperature Deg C 85 85
Corona 2 KW 1.9
Lamination pressure Kg/cm2 4.5
Back up roll pressure Kg/cm2 2
Unwind tension 2 N 50
Film temperature after chiller Deg C 25
Winding tension N 200
Temperature of film coming out of zone Deg C 53

Barrier Test
Water vapor transmission rate is a steady state rate at which moisture permeates through a film at a specified condition of temperature and relative humidity.
Values are expressed in (units): gm/m²/ 24 hrs and gm/in²/24 hrs.
The machine follows ASTM F1249 standard
Standard test conditions: 38 deg C & 90 % RH
The test proceeds with prior conditioning of 6 hrs.
Dual cell film testing mode.
Test Procedure:
(1) To observe wrinkle free and dent free sample for barrier test
(2) Sample Preparation: to cut the OK sample using the dedicated template assigned for test
(3) Sample deployment: Mount sample in two dedicated cell, Cell A & Cell B
(4) Parameter set up: Set up parameter according to test no, test specification, Setting up RH (Relative Humidity) and temperature, and flow and start the test
(5) Evaluating Results: Censor installed in machine will calculate the total amount of moisture and or oxygen passed through laminate in 24 hrs, results will be displayed in gm/m2/day
Result
Bare paper – 1614 gm/m2/day
Paper + Compostable PE – 280 gm/m2/day
Paper + Compostable PE + Barrier Coating – 47 gm/m2/day
[0014] While the foregoing describes various embodiments of the disclosure, other and further embodiments of the disclosure may be devised without departing from the basic scope thereof. The scope of the disclosure is determined by the claims that follow. The disclosure is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

, Claims:1.) A paper based blister packaging material, wherein said blister packaging material comprises a first layer of paper having thickness in the range of 50 GSM to 200 GSM coated with at least one barrier coating material on one side of said paper and a heat sealing material on another side of said paper;
wherein said barrier coating material is selected from the group of compostable Polyethylene (PE), Cellulose based paper and Nano clay based barrier coating; and
wherein said heat sealing material is selected from the group of cellulose based paper and vinyl acrylate based lacquer.

2.) The paper based blister packaging material as claimed in claim 1, wherein said paper is Kraft paper.
3.) The paper based blister packaging material as claimed in claim 1, wherein said barrier coating material has a thickness in the range of 5 to 30 GSM.
4.) The paper based blister packaging material as claimed in claim 1, wherein said heat sealing material has a grammage in the range of 25 to 90 gm/m2.
5.) The paper based blister packaging material as claimed in claim 1, wherein said paper based blister packaging material further comprises a lacquer coat having thickness in the range of 5 to 30 GSM.
6.) A paper based blister comprising
- a thermoformed paper based blister packaging material with a plurality of recess formed therein for receiving a product comprising at least three layers;
wherein said at least three layers comprise a paper having thickness in the range of 50 GSM to 200 GSM coated with at least one barrier coating material on one side of said paper and a heat sealing material on another side of said paper;
and
- a flat lid comprising at least two layers, an outer 50 GSM paper and a heat sealing material;
wherein said thermoformed paper based blister packaging material and said flat lid are heat-sealed together.
7.) The paper based blister as claimed in claim 6, wherein said barrier coating material is selected from the group of compostable Polyethylene (PE), cellulose based paper and nano clay based barrier coating; and said heat sealing material is selected from the group of cellulose based paper and vinyl acrylate based lacquer.

8.) The paper based blister as claimed in claim 6, wherein said paper is kraft paper.