Learn how to get BIS ISI mark certification for PP woven laminated block bottom valve sacks for 50 kg cement packaging. Understand the standard, detailed application process, and why certification is essential for maintaining quality and compliance with industry standards.

In the cement industry, packaging plays an important role in keeping the product safe and easy to handle. One of the most commonly used packaging types is the Polypropylene (PP) woven laminated block bottom valve sack, especially for packing 50 kg of cement. To ensure quality, safety, and durability, these sacks must be certified by the Bureau of Indian Standards (BIS) under the ISI mark scheme.

This article will help you understand what these sacks are, why BIS certification is required, and how you can get the ISI mark for your product.

What Are PP Woven Laminated Block Bottom Valve Sacks?

These are specially designed sacks made from polypropylene (PP). They are:

Woven: The fabric is woven for extra strength.

Laminated: A layer is added to make the sack water-resistant.

Block Bottom: The bottom is flat like a box, which helps in stacking.

Valve Type: The sack has a small opening (valve) to fill the cement and automatically close with pressure.

These sacks are strong, weather-resistant, and perfect for carrying 50 kg of cement.

Why Is BIS Certification Important?

Getting a BIS ISI mark means your product follows Indian Standards and is safe and reliable. For cement packaging, it is mandatory to use ISI-marked sacks as per government rules.

Benefits of ISI Certification:

Ensures your product is accepted by cement companies and government buyers

Shows customers that your sacks meet safety and quality standards

Helps prevent complaints or damage during transport and storage

Builds trust and opens more business opportunities

Applicable BIS Standard

The certification for these sacks comes under a specific Indian Standard (IS) issued by BIS. As of now, this is handled under standards similar to IS 16703 or related standards for cement packaging sacks (based on final BIS notification — exact IS number to be confirmed if newly notified).

These standards cover:

Sack dimensions

Fabric strength

Lamination quality

Drop and burst resistance

Weight capacity

Valve construction

Marking and labeling

How to Get BIS ISI Mark Certification

Here’s a step-by-step process to apply for BIS certification:

1. Apply on BIS Portal

Go to the official BIS portal (www.manakonline.in) and fill out the application form under the ISI mark scheme.

2. Submit Required Documents

You’ll need:

Company registration documents

Factory license

GST certificate

In-house test equipment list

Product details and specifications

3. Sample Testing

BIS will collect your product samples and send them to a BIS-recognized lab for testing based on the Indian Standard.

4. Factory Inspection

BIS officers will visit your factory to inspect the production process, testing facilities, and quality control measures.

5. Get ISI License

If everything is found to be correct and the test results pass, BIS will issue a license. You can now print the ISI mark on your sacks.

Validity and Renewal

The license is valid for 1 year and must be renewed annually.

Renewal is simple—just submit your updated test reports, sales data, and renewal fee.

What Happens if You Don’t Have ISI Certification?

Selling or supplying PP cement sacks without the ISI mark is illegal under the BIS Act. This can lead to:

Heavy fines

Cancellation of orders

Legal action

Blacklisting from government tenders

So, it’s always best to get certified and stay compliant.

Conclusion

Getting BIS ISI Certification for PP woven laminated block bottom valve sacks used in 50 kg cement packaging is not just a legal requirement—it’s a smart business decision. It ensures your product is safe, strong, and trusted in the market.

If you're a manufacturer of cement packaging sacks, applying for ISI certification will help you grow your business, win more clients, and meet government standards.

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