Shreeji Industrial Engineers

5 jan

About Us

Shreeji Industrial Engineers (Bombay) Private Limited.,
established in 1979, now 40+ years. Over the years, Shreeji has grown to be one of the leading Innovative & Quality supplier of Corrugated Products

Shreeji, Manufactures Corrugated Boxes, cartons, rolls, Fitments , Trash Bins & Allied Packaging materials, under the brand Shreeji. And have introduced Eco-Friendly Cardboard products such as: Trash Bins, Floor Mats, Food Boxes, Gift Boxes, Toys, Play House, Flower Bouquet Box, etc, under the brand Zebby.

Why Choose us

We offer

Out-of-the-Box Creatively Innovative Designs

We have 40+ years reputation of being consistent Vendor

We are committed to Value based Business

Quality Products & Service which are Un-Matched in the Industry

Corrugated Boxes

Multicolour Cartons

Heavy Duty Cartons

Fitments Inserts Pads

Moving Cartons

576 +

Happy Clients

40 +

Years of Experience

1000 +

Projects Delivered

All in one place – Packaging Testing

GSM is the mass in grams per square meter. It is an indication of the amount of pulp that goes in to forming in
one unit area of the paper. It is a useful benchmark and an
important parameter for comparison.

Moisture measurement refers to the amount of water present in paper or paperboard. This testing is essential to ensure quality assurance, control production processes, enhance product performance, prevent microbial growth, and maintain cost efficiency. Accurate moisture measurement plays a critical role in producing high-quality corrugated products that meet industry standards and customer expectations.

RCT (Ring Crush Test) is used to determine the ring crush resistance of a paper strip formed into a ring. This test plays a crucial role in ensuring the strength, integrity, and performance of packaging materials. By measuring compressive strength, RCT helps maintain the quality of corrugated products, ultimately contributing to better protection of goods throughout the supply chain.

The COBB value indicates the water absorption capacity of kraft paper. The Cobb test is essential because it measures the paper’s ability to resist water penetration and the amount of water absorbed by the surface of fiberboard. If the fiberboard absorbs excessive moisture, its strength may decrease, affecting the overall durability and performance of the box.

ECT, or the Edge Crush Test, measures how much force the edges and corners of corrugated material can withstand before being crushed. This is important because the edges and corners provide most of the strength required to keep a shipping carton upright. They must be strong enough to support the weight of stacked cartons and protect the contents during handling and transportation.

Bursting Strength measures the amount of force required to burst corrugated board or paperboard. This test is important because it indicates how much pressure a box can withstand and how much weight it can handle during rough handling and transportation. Since packages are often subjected to impact and pressure during courier handling, a higher bursting strength ensures better protection and durability of the box.

IS 2771 (Part 1) : 2022

Table 1 Details of Types of Flutes (Clause 4.2)
Flute	No. of Corrugations Per 30 cm	Height of Corrugations Exclusive of Liners	Remarks
A (Broad)	32 ± 3	4.0 to 4.9	4.2.1 A-flute is used when stacking strength or cushioning is the primary concern. B-flute gives better resistance, folds more easily and is stronger at the score lines than A or C-flutes. C-flute has qualities that fall between A and B making it a good compromise and expanding its wide usage. E-flute is a special grade, that is, easiest to fold, can be printed very well and is used for some folding cartons.
B (Narrow)	46 ± 5	2.2 to 3.0
C (Medium)	38 ± 4	3.1 to 3.9
D (Dense)	50 ± 8	2.0 to 2.8
E (Micro)	86 ± 10	1.0 to 1.8

As a general guide Table 2 may be referred for the selection of single wall, double wall & triple wall corrugated fibreboard used for the construction of general purpose boxes.

Table 2 General Guidance on Fibreboard Boxes and Requirements (Clauses 7.1, 7.5, 8.3.1 and 8.3.1.1)
Types of Corrugated Board	Max Mass (kg)	Max Combined Dimensions (mm)	Min Bursting Strength	Min ECT
Single wall	8	635	6 (600)	3.0
	10	900	8 (800)	4.0
	15	1125	9 (900)	4.25
Double wall	20	1525	12 (1200)	5.0
	25	1715	13 (1300)	5.3
	30	1905	14 (1400)	5.6

NOTES
1 Boxes should be made with no single dimension exceeding 50 percent of the combined internal dimensions.
2 For each 10% reduction in mass, combined dimensions may be increased by 5%.
3 Where compression strength is specified, ECT is not necessary.