Package Evaluation Training2package forming customer

Incorrect crease positions will have an impact on package forming, and could cause mechanical tension mechanical tension.. How ►Visual check the preformed crease in the packaging ma

Package basic conditions

The four basic package conditions are:

All these conditions must be correct prior to any

package evaluation Otherwise restore “basic package

How Visual check

Check the date and code printing

How - Visual check

►Printed code is visible and readable

Why: Legal Demand

►If necessary… STOP the filling machine and adjust the date printing according

to the instruction supplied with the printer

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►Flap sealing effect the line

►Flap sealing effect the line efficiency and package integrity

How

►Unfold the flaps and check that they are properly sealed

►On the bottom flaps the

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►On the bottom flaps the heat should not be directed on the TS

►Burnt marks might impact

on package integrity

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p g pressure which more difficult for flap

sealing

3 Weight (Volume)

Weight the package - How

► Set zero the balance with the empty package

► Weight the filled package, read the weights and record the

deviation if any Correlate the weight to volume.

► To adjust the package weight, follow the instructions in the OM.

► Always check the weight again after adjustment

4 LS-Overlap

►By measuring LS-overlap, can check the tube

Why

► y easu g S o e ap, ca c ec t e tube

diameter and packaging material width These are

important parameters to produce well formed

►Use the vernier caliper or steel ruler

check the width of the overlap

► If the overlap is out of the range

indicated, corrective actions should

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►Visual inspection to verify

5 Crease line alignment

►Visual inspection to verify

the creases are correctly

positioned Incorrect crease

positions will have an

impact on package forming,

and could cause

mechanical tension

mechanical tension.

How

►Unfold the top flap and

visual check for the crease

►Visual inspection to verify the packages are

correctly formed Badly formed packages could

cause mechanical tension.

How

►Visual check the preformed crease in the

packaging material are correctly aligned along the

packaging material are correctly aligned along the

edge of the package (top transversal crease).

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“Counter clock wise”

Adjust the shape of the package

6 Design

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Adjust the shape of the package

6 Design

Guide:

• Package Low crease position,

Adjust “+”

• Package High crease position position,

Adjust “ - ”

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6 Design

Fin crease terminology

Top fin distance

Bottom fin distance

• TBA 100 B and TBA 125 S, fin crease = 6 mm

• Other sizes, fin crease = 8 mm

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6 Design

Design position alternative

1 The easiest method for checking the correct design position is to

t th k d th f t i t d t t

cut the package down the same as for a strip tear down test.

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6 Design

Design position alternative

2 Then looking at the insides of both the SA and LS pieces turn one of

them around so that the two pieces of strip are on the same side the

Design error = A/2 > 1 mm

A > 2mm

them around so that the two pieces of strip are on the same side, the

top of one piece over the bottom of the other.

• The design control will then need to be moved half the distance of the error A.

• Design correction systems regulation loop regulate +/- 1 mm from nominal set point

• Adjust the design error when it is bigger than 1 mm.

A

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7 P k D f t

7 Package Defect

Package Forming

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7 Package defect name

►To understand the defect appearance

Objectives

pp

► Able to give correct name to package defect

when communication

7 Package defect

Definition:

The o tside PE la er is torn/r pt red or clo d in the PPH area

2 PPH torn and cloudy - Forming

The outside PE layer is torn/ruptured or cloudy in the PPH area

when weak adhesion between outside PE and laminate layer

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7 Package defect

Definition: A corner fold is a dimple or “negative folding” of the

corners both top and bottom

3 Corner fold - Forming

corners, both top and bottom

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3 Corner fold - Forming

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7 Package defect

4 Corner collapsed - Forming

Definition: A big corner fold with double fold on the flap More sensitive in the machines without crease wheel and shallow crease on packaging material

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7 Package defect

5 Fin folding - Forming

Fin folding occurs on top transversal seal when TS bends on

the reverse side creating a notable fold

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Definition: A fin tear it’s a board crack that occurs where the top

transversal seal meets the flap at the end of the fin corner The fibres

7 Package defect

6 Fin tear - Forming

transversal seal meets the flap at the end of the fin corner The fibres

must be noticeable.

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Cosmetic fin tear

6 Fin tear - Forming

TBA TWA

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Defiinition: The board cracks are visually detected and the fibres must

be noticeable Board crack is located where the LS meets horizontal

7 Package defect

7 a) LS Board crack - Forming

be noticeable Board crack is located where the LS meets horizontal

top/bottom crease.

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Definition: The board cracks are visually detected and the fibres

must be noticeable A board corner crack is located on any of the

7 Package defect

7 b) Corner crack - Forming

must be noticeable A board corner crack is located on any of the

eight corners of the package

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Definition: A wrinkle on/crossing TS is a line on/crossing

t l l

7 Package defect

9 Wrinkle on/crossing TS - Forming

transversal seal area

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Definition: Wrinkle on opening area can be small folded line where

the PM should be smooth or it can through the horizontal crease.

7 Package defect

10 Wrinkle on opening area - Forming

g

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Definition: A package is classified to have dented panel(s) when one or

several panels are permanently deformed (dented) from its pristine

shape A dented panel can be either pre sent physical deformation or

7 Package defect

11 Dented panels - Forming

shape A dented panel can be either pre-sent physical deformation or

large wrinkles on the panel indicating a previous deformation, which has

been squeezed back to shape.

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Definition:crocodile skin defect is present when the surface of one

7 Package defect

12 Crocodile skin - Forming

or more panels of the package is covered by wrinkles

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7 Package defect

Definition: Scratches are marks on panels that are notable

mainly on metallized packaging material

13 Out side scratches - Appearance

mainly on metallized packaging material

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Definition: Scuffing are holes or damages in the outer PE at

e g the bottom corners or the LS overlap often due to wear

7 Package defect

14 Bottom scuffing - Appearance

e.g the bottom corners or the LS overlap, often due to wear

from e.g the conveyor

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Horizontal Crease Dent

Definition: The crease is dented when the horizontal crease (top or bottom)

is clearly broken or when there is a wrinkle through the crease

7 Package defect

15 a) Crease Dent - Appearance

is clearly broken or when there is a wrinkle through the crease.

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Vertical Crease Dent

Definition: The crease is dented when the vertical (longitudinal) crease

is clearly broken or when there is a wrinkle through the crease The dent

7 Package defect

15 b) Crease Dent - Appearance

is clearly broken or when there is a wrinkle through the crease The dent

is located on any of the vertical creases, MD creases.

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7 Package defect

16 Outside PE blisters - Appearance

Definition: e t o Bubbles appearance on outside PE, damaged the package ubb es appea a ce o outs de , da aged t e pac age

appearance Normally due to weak adhesion of outside PE.

Definition: Crack found on the ridge at TS seal and with early

bending off after dissolving

7 Package defect

18 TS Al-foil crack

bending off after dissolving

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Dissolved TS with no crack in the Aluminium-foil

TS Al-foil crack in Transversal Seal

High bend-off

No channel

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Dissolved TS with a crack in the Aluminium-foil

TS Al-foil crack in Transversal Seal

Early bend-off

Channel

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Definition: During forming bottom of package, tension is very

high where several layers of packaging material are folded

7 Package defect

19 K-crease crack leakage

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Left side Right side

Note : By nature, there always

have K-crack at bottom but not

leak by red ink test.

E d

Package Forming

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