04/10/2023

February, 2014

How Does IQF film begin?

IQF film begins as LDPE/LLDPE plastic resin pellets

Film Fabrication Extruder

Extruder

The function of an extruder is to melt the polymer, mix the polymer and other additives, and deliver a homogeneous melt at uniform pressure and output to the die by the application of heat and shear.

VII-6b

Screw

Hopper

Safety Shroud

Feed ThroatCast Heaters

Stockscrew

Cylinder

Pressure Gauge

Cylinder Support

Cooling WaterInlet Manifold

Powder SealMachine Base

Rotary Joint Gearcase

Thrust Bearing Assembly

VII-7b

Film Fabrication Blown Film Process

1

2

3

4

VII-4b

Polymer orientation during film fabrication

61”

1”

2.6”

8.5”

0.055”

0.0025”

Front View Side View

Polymer exits the die and is in a relaxed state

Before the polymer cools, the polymer chains are stretched 2.6 times in the cross direction and 8.5 times in the machine direction. The thickness is reduced 22 times. This orientation or stress is frozen into the film.

BUR=bubble diameter / die diameter

Determination of BUR and Layflat

Draw Down Ratio (DDR) = Die Gap Gauge

W & H Technology Will Be A Catalyst To Our Success

Heat Seal of m-VLDPEFigure 17: Coextruded Blown Films - Hot Tack Performance

0

2

4

6

8

10

12

80 90 100 110 120 130

Temperature (C)

Pea

k H

ot T

ack

Str

engt

h (

N/1

5mm

)

mVLDPE

mLLDPE

EVA-1

EVA-2

Figure 18: Coextruded Blown Films - Heat Seal Performance

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

85 90 95 100 105 110 115 120 125 130 135

Temperature (C)

Hea

t S

eal

Str

engt

h (

lbs/

in)

mVLDPE

mLLDPE

EVA-1

EVA-2

EVA D-1630

200

400

600

800

1000

1200

Drop Dart Impact of EVA vs. m-VLDPE

F-50 Grams

F-50 Drop Dart Impact - Mono vs. IQF-2 ( Normalized @ 3.0 mil )

SFE UP- 834

GMS

0

100

200

300

400

500

600

700

800

900

IQF-2

879

387

04/10/2023

Rich Foods Film Properties Comparison

February, 2014

MD Tensile Strength - psi

0

500

1000

1500

2000

2500

3000

3500

4000

4500

5000

Rich ControlIQF-2

TD Tensile Strength-psi

3,100

3,200

3,300

3,400

3,500

3,600

3,700

3,800

3,900

4,000

IQF-2 Rich Control

Elongation At Break-%

0

100

200

300

400

500

600

700

800

900

Rich Con-trol

IQF-2

Secant Modulus or Stiffness-psi

29,000

30,000

31,000

32,000

33,000

34,000

35,000

IQF-2 Rich Control

Puncture Strength- lbs

0

1

2

3

Rich ControlIQF-2

Optical Clarity-%

0

10

20

30

40

50

60

70

80

IQF-2 Rich Control

04/10/2023

Rich ProductsLaminations Properties Comparison

February, 2014

H2O/Water Transmission Rate -gms/100sq.in./24 hr

0.305

0.31

0.315

0.32

0.325

0.33

Rich ControlCM

O2/Air Transmission Rate- cc/100sq.in./24 hr

7.4

7.6

7.8

8

8.2

8.4

8.6

8.8

9

CM Rich Con-trol

MD Tensile Strength-psi

0

5

10

15

20

25

30

35

CMRich Control

TD Tensile Strength-psi

34.5

35

35.5

36

36.5

37

37.5

38