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Send  Share  RSS  Twitter  13 Sep 2011

MANUFACTURING: Tuffy's Stringent Quality Policy

 



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TO ensure that the Tuffy product is fit for purpose the company has an extensive Quality Assurance Programme supported by a ‘no compromise on quality’ attitude.

It has a Quality Assurance Supervisor and four Quality Inspectors who conduct numerous tests to assess the material, constructional, dimensional and performance requirements of the refuse bags are conformed to during the production and packing process. Quality procedures are regularly reviewed, to ensure they are effective and product satisfactory results.

The tests are intended to determine the overall suitability of the bags, when the bag is filled to its maximum useful capacity and include the following:

From each production lot a sample batch of 20 bags is randomly selected, and each bag is individually tested by placing the respective test load (ballast) consisting of a specified number of cotton bags, each filled with 500 grams of low density polyethylene (LDPE) granules. Test loads are adapted to the gauge of the bag, for bags of 18 micron the ballast equals 10 kg, for bags of 22 micron the ballast equals 12 kg and for bags of 35 micron the ballast equals 15 kg.

The drop test is performed using 10 bags from the sample batch. The bags loaded with the respective test loads are gently deflated before being closed, the loaded bag is then placed onto the trap of the testing apparatus to ensure the bottom of the bag is 1 metre from the test surface. Each bag is dropped once on its bottom. The bags are checked after impact for tears, before removing the ballast. Should any tears measure more than 61mm the bag fails the test. One failure per 10 bags tested is regarded as acceptable, more than 1 bag failing is non-conforming.

The remaining 10 bags from the sample batch are used for the resisted drop. The bags are loaded with the respective test loads and gently deflated before being closed, the loaded bag is then loaded onto the testing apparatus. The apparatus permits the bag to ‘free fall’ for 200mm and stop, remaining suspended by the tied neck of the bag.

Each bag is dropped once, the bags are checked for tears before removing the ballast. Should any tears measure more than 61mm the bag fails the test.

One failure per 10 bags tested is regarded as acceptable, more than 1 bag failing is non-conforming.

These tests are based on the recommendations currently being formulated into the proposed SABS National Standard for Refuse Bags, derived from existing European Standards.

Non conforming batches are clearly market, removed from the packing area and placed on hold. Each roll is subjected to additional inspections, which if failed result in the batch being rejected, and recycled.


 
 
 
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