Blister Lidding Foil

 

Product: - Blister Lidding Foil Specification

1.      Hard Aluminium Foil one side under coat with primer for printing and other side coated with Heat Seal lacquer (HSL)

2.       Hard Aluminium Foil one side printed to design and other side coated with Heat Seal lacquer Application

1.      The heat seal lacquer coated foil suitable in the application of Lidding foil for thermoform blister (PVC/PVDC) and cold form blister (CFB).

2.      As Lidding foil in Unit Food Packaging and confectionary

3.      Any other application with the consent of manufacturer.

Structure    1. Primer/Alu. Foil / Heat Seal Lacquer - Plain

2. Printing/primer/ Alu. Foil/ Heat Seal lacquer - Printed

Compliances

The product is fully compliant to the tests of FDA, REACH , RoHS and anti-microbiological

Detail Description of the product

Foil Rolled from Aluminum Alloy - AA 8011/1200 grade imported foil stock conforming to ICH Q3D Schedule, Rolled with FDA approved consumables and international guidelines on Health and Safety.

Standard Foil Gauge (mm)

Tolerance Limit (±8%)

0.020

± 0.0016

0.025

± 0.0020

0.030

± 0.0024

Tolerances of Foil Gauge and Unit Weight:

 

Foil Gauge mm

Thickness mm (±8%)

Unit Weight g/sq.mtr. (±8%)

 

Lower Value

Standard Value

Upper Value

 

Lower Value

Standard Value

Upper Value

0.020

0.0184

0.020

0.0216

49.90

54.20

58.50

0.025

0.0230

0.025

0.0270

62.33

67.75

73.17

0.030

0.0276

0.030

0.0324

74.80

81.30

87.80

Properties

Mechanical & Surface

Pin Holes

Surface

Matt & Bright

Gauge

Nos / Sqmtr* Max

Temper

Hard H18

0.020mm

10

 

Wet ability

32 dynes (minimum)

 

0.025mm

 

05

UTS

150 – 160 MPa

0.030mm

NIL

 

Elongation

 

1.5 % Max

·    Pin Holes between 20 to 50 micron measured under 1500 Lux of light

Heat Seal Lacquer

Color less Polymer of Vinyl Chloride, Vinyl acetate and Di-carbonic Acid liquefied with solvent and applied in an appropriate way to achieve no retained solvent. The Heat Seal Lacquer is suitable for sealing with PVC/PVDC

Standard Coating Grammage

Variation Limit

4 – 6 gsm

± 0.5 gsm

5 - 7 gsm

± 0.5 gsm

6 – 8 gsm

± 0.5 gsm

 

Combined Weight and Yield ( Sq meter per Kg of coated foil)

Thickness mm

Combined Unit Weight (Alu Foil + HSL) - Grams / Sq mtr of coated foil

 

Yield - Range

 

 

4 -6 gsm HSL

 

5 – 7 gsm HSL

 

6 - 8 gsm HSL

Square metres/ Kg of coated foil

 

Min.

Max.

Min.

Max.

Min.

Max.

 

0.020

53.9

64.5

54.9

65.5

55.9

66.5

17.2 to 16.1

0.025

66.3

79.17

67.3

80.17

68.3

81.17

13.9 to 13.2

0.030

78.8

93.8

79.8

94.8

80.8

95.8

11.7 to 11.2

 

Recommended Parameters:

Sealing strength (Foil + Foil)

450 gms/15 mm (Min.)

Sealing Strength (Foil + PVC/PVDC)

650 gms/15 mm (Min.)

Sealing Temperature

200° C

Sealing Pressure

3.0 to 6.0 bar

Dwell Time

0.5 Sec

 

Primer

A thin layer of de-waxed shellac or nitrocellulose is applied to de-grease the foil and promote adhesion with printing ink.

Printing

Printing Surface

On Primer side and HSL side

Design

As per customer’s approved artwork and design.

Colors

Up to 8 Col on Primer side & 4 color on HSL side

Length Register

± 0.3 mm

Ink Adhesion and Stability

No peel off or breakage by scotch pull test or under sealing condition.

 

Finishing

Reel Width

As required or within 960 mm

Reel wandering

± 0.5 mm edge wandering

Width Tolerance

±1mm

Outside Diameter

Slit Reel – 350 & Jumbo 400 mm

Core & Inside Diameter

Cardboard, Aluminium and PVC 76 mm ID suitable for shafts and pneumatic mandrel

Joints

With red / brown colored BOPP tape with flap (max 2 per reel.)

Packing and Labeling

Mode of Packing

Sea worthy packing

Labeling

Each Reel / Jumbo Roll is identified with a sticker, which is pasted inside the core and has got following information: -

Specification/ Gauge/ Width/ Lot No./ Operator No./ Date/ Set No./ Machine name/ No. of Joints.

Test Certificate        The test certificates provided on observed values with standard parameters or mutually agreed parameters.

► Above-mentioned specifications are for general guideline only and can be changed as part of continuous improvement programme.

► The final product specification will be made as per customer requirement