Saturday, 15 September 2018

Carton method of analysis (Test procedure)


1. Description: Folding cartons are small to medium sized cardboard boxes made from paper board.   
The paperboard are cellulose derived substrate, with thickness generally greater than 200 mm which  are made from virgin and recycled fiber. They are used to package a wide range of products  because of the ability to satisfy the function of protecting and utility. Protection from the crushing,  bending, contamination, grease etc. The advantage of this board is safe, easy to handle, easy to dispose material. The board is eco friendly to nature. printing of folding cartons by offset printing and gravure printing process. Post printing use UV coating and lamination. A certificate of analysis is accompanied with each supply.
                                                                              
 2. Types of paper boards used for cartons:
                                                                                                                                                                                                                                                                                                                            
White lined chip board : Multi layer boards consisting of 60-100% of recycled fiber. Top layer produced either with high grade white preprint waste paper or bleached chemical pulp. Middle & Back layer is made of waste paper. Basic weight ranges from 200-600 GSM.  Extremely good smoothness
eg. White back board, Grey back board

Solid bleached board : Produced entirely from bleached chemical pulp. Surface is double coated & back is either uncoated or lightly coated. Available in 200-600 GSM. Suitable for all types of printing processes.
Eg. Safire graphic board.

3. Types of cartons:
3.1 Inner cartons: Primary packaging contains the smallest quantity of product for final product. Multicolor and Various Size & Types Mono Cartons is mainly used for packing blister and strip. These are designed using printed sheets paper board. The customer should feel a sense of satisfaction right from the feel of packaging. Primary packaging aims mainly at marketing purposes. Package should reflect the functionality of product.

3.2 Outer cartons: It is packaging outside primary packaging, usually used to group primary packaging. Folding cartons provide excellent secondary protection for individually packaged products as well as multiple unit packs. For multiple unit packs, the carton can be designed as a dispenser carton by including a perforated area into the carton. The user exposes the product for easy removal by their customer using the perforated section.

3.3 Cartons style:
Reverse tuck end cartons.
Straight tuck end carton
Straight tuck end with hang tab
Lock bottom end carton
Dispenser carton

 
4.0 Test parameters:

Text matter: Compare text matter of sample with approved artwork.

Acceptance criteria: Text matter should be as per approved artwork

Colour: Check the colour of sample with approved shade card. The colour shade should match with approved shade card.

Acceptance criteria: Shade should be as per approved shade card.

Pasting: Side pasting should not open easily. 

Dimension: Measure dimensions with calibrated measuring scale.
Acceptance criteria:
Tolerance for Length       : ± 2 mm
Tolerance for Breadth     : ± 2 mm
Tolerance for Height       : ± 2 mm

Weight: Weigh the carton on weighing balance.

Acceptance criteria:
Tolerance for weight: ± 2%

Grammage:

Cut the sample in 10cm x 10cm piece or suitable measured scale, weigh it and calculate the Grammage with following formula       
                            
                          Weight of 10 cm x 10 cm piece in gm
Grammage = -------------------------------------------------- x 10000
                                     Total area of piece in cm2
       
Acceptance criteria:
Grammage: Not less than 296 gsm