The IS 10 Part 1: 1990 standard outlines the fundamental criteria for plywood tea-chests predominantly employed in the packaging and shipment of tea. It addresses aspects such as materials, dimensional standards, construction methods, tare weight constraints, and performance evaluations including compression and drop tests to guarantee robustness and content protection during handling and transportation. This code is vital for producers, vendors, and quality assurance personnel engaged in manufacturing and inspecting plywood tea-chests within India.
Overview
The IS 10 Part 1: 1990 standard outlines the fundamental criteria for plywood tea-chests predominantly employed in the packaging and shipment of tea. It addresses aspects such as materials, dimensional standards, construction methods, tare weight constraints, and performance evaluations including compression and drop tests to guarantee robustness and content protection during handling and transportation. This code is vital for producers, vendors, and quality assurance personnel engaged in manufacturing and inspecting plywood tea-chests within India.
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Frequently Asked
IS 10 Part 1 specifies that plywood tea-chests are constructed from six plywood panels forming a shook, reinforced with twelve battens. Although the standard provides several typical external sizes, common dimensions include lengths of 400 to 480 mm, widths from 400 to 500 mm, and heights ranging between 450 and 600 mm. These sizes facilitate standard packing and handling in tea transport. For exact tolerances and detailed drawings, reference to the full IS 10 Part 1 and associated parts is recommended.
The standard mandates that plywood panels and battens be made from specified timber species, which the supplier must declare. Battens should match the quality of the plywood used. IS 10 Part 1 does not explicitly require internal linings; the primary focus is on the assembly of plywood panels and battens. For detailed material specifications and species declarations, suppliers must provide documentation as per the dispatch requirements outlined in the standard.
Plywood tea-chests must undergo several performance evaluations including: an end compression test where a set of filled tea-chests is subjected to vertical loads to determine the load at which permanent deformation occurs, with an acceptance criterion of a minimum average load of 50 kN for standard sizes; a constant load test applying 20 kN for three hours without visible damage; and a drop test involving dropping the filled chest on each corner from 600 mm height three times, ensuring no visible deterioration such as bulging, nail failures, delamination, or metal binding wrinkling. These tests ensure the tea-chests can withstand handling and transportation stresses.
According to IS 10 Part 1, the supplier must declare the tare weight of the empty tea-chest in the dispatch documents. The actual tare weight is allowed a variation of plus or minus 10% from this certified value and must not exceed the maximum permitted mass specified for the tea-chest size. Additionally, dispatch documents should include timber species used for plywood and battens along with the chest dimensions, ensuring consistency and quality control in manufacturing and supply.
IS 10 Part 1 requires that each tea-chest be clearly and permanently marked with the manufacturer's identification and the year of manufacture to ensure traceability and quality assurance. Markings should be legible and indelible, though the standard does not specify exact size or placement. This marking supports compliance verification and product tracking throughout the supply chain.
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