plywood cases for packing tobacco for export

IS 7992: Scope - Key Specifications & Dimensions

1. Scope Definition (Clause 2.0)

• Applies to packing cases as per IS 707-1976 and IS 6703-1972.
• Defines material and construction requirements for packing cases.

2. Typical Case Dimensions (Clause 3.1)

• Dimensions can be customized by purchaser-supplier agreement.
• Refer to Fig. 1 and 2 in IS 7992 for detailed geometry.

3. Material Specification (Clause 4.4)

• Use soft round aluminium wire conforming to IS 739-1977.
• Minimum wire diameter: 3 mm.

4. Marking (Clause 8.1.2)

• Cases may bear the ISI Certification Mark ensuring compliance and quality control.

Summary Diagram: Typical Packing Case Dimensions

graph TD
  A[External Dimensions] -->|Length=1200mm| B(Length)
  A -->|Width=750mm| C(Width)
  A -->|Height=750mm| D(Height)
  E[Internal Dimensions] -->|Length=1137.5mm| F(Length)
  E -->|Width=737.5mm| G(Width)
  E -->|Height=737.5mm| H(Height)

Use this as a reference for designing and verifying packing cases under IS 7992.

IS 7992 - Definitions and Key Specifications

• Reference Standards: Definitions supplement those in IS 707:1976 (timber tech) and IS 6703:1972 (wooden packaging terms).

• Typical Case Dimensions (Clause 3.1):

• Batten Specifications (Clause 4.2.2):

  • Moisture content ≤ 15% oven-dry mass (per IS 8358:1977 Appendix A)
  • Well-seasoned, straight-grained, free from decay, insect attack, knots, splits, warping.

• Wire for Fabrication (Clause 4.4):

  • Soft round aluminium wire as per IS 739:1977
  • Minimum diameter: 3 mm

• Additional Notes:

  • Drill 6 holes on top, bottom, and sides for ventilation or handling.
  • Construction details and plywood specifications are per referenced figures and clauses.

graph TD
A[Wooden Packing Case] --> B[External Dimensions: 1200x750x750 mm]
A --> C[Internal Dimensions: 1137.5x737.5x737.5 mm]
A --> D[Battens: Moisture ≤15%, defect-free]
A --> E[Aluminium Wire: ≥3 mm dia, IS 739]

This summary captures critical definitions and specifications for packing case construction per IS 7992.

IS 7992: Dimensions for Wooden Packaging Cases

Key Dimensions (Clause 3.1, Table 3)

• External dimensions define the overall size of the packing case.
• Internal dimensions define the usable volume inside the case.

Additional Specifications

• Wire for fabrication (Clause 4.4): Soft round aluminium wire, diameter ≥ 3 mm, conforming to IS: 739-1977.
• Wood battens (Clause 4.2.2): Moisture content ≤ 15%, straight-grained, free from defects affecting strength.
• Drilling: Holes are to be drilled on top, bottom, and sides as per Figures 1 & 2 (assembly details).

Summary Diagram

graph TD
    A[External Dimensions] -->|Length 1200 mm| B[Length]
    A -->|Width 750 mm| C[Width]
    A -->|Height 750 mm| D[Height]
    E[Internal Dimensions] -->|Length 1137.5 mm| F[Length]
    E -->|Width 737.5 mm| G[Width]
    E -->|Height 737.5 mm| H[Height]

These dimensions ensure standardization and compatibility for wooden packaging cases under IS 7992.

IS 7992: Materials - Key Specifications and Tables

1. Aluminium Wire (Clause 4.4)

• Material: Soft round aluminium wire as per IS 739:1977.
• Minimum diameter: 3 mm.
• Used for fabrication of packing cases.

2. Timber Battens (Clause 4.2.2)

• Moisture content: ≤ 15% oven-dry mass (IS 8358:1977 Appendix A).
• Quality: Well-seasoned, straight-grained, free from decay, knots, splits, warping, insect attack.
• Ensures strength and durability.

3. Typical Case Dimensions (Clause 3.1)

Additional References:

• Steel countersunk head wire nails (first revision).
• Wrought aluminium and aluminium alloys wire for engineering (second revision).
• Timber species and plywood specifications for wooden packaging.

graph TD
A[Materials] --> B[Aluminium Wire]
A --> C[Timber Battens]
A --> D[Case Dimensions]
B --> E[IS 739:1977, Diameter ≥ 3 mm]
C --> F[Moisture ≤ 15%, Straight grain]
D --> G[External & Internal Dimensions Table]

This summary ensures compliance with IS 7992 material specifications for wooden packing cases.

IS 7992: Key Construction Specifications & Formulas

1. Dimensions of Packing Cases (Clause 3.1)

2. Materials (Clause 4.4 & 4.2.2)

• Wire: Soft round aluminium wire per IS:739-1977, diameter ≥ 3 mm.
• Battens: Moisture content ≤ 15% (oven-dry basis per IS:8358-1977 Appendix A).
• Battens must be straight-grained, free from defects (insect attack, knots, splits, decay).

3. Construction Notes

• Use plywood and timber species as per IS specifications.
• Drill holes on top, bottom, and sides for ventilation or handling (see Fig.1 & Fig.2 in IS 7992).

Moisture Content Formula (per IS 8358 Appendix A):

[ \text{Moisture Content} (%) = \frac{W_{wet} - W_{dry}}{W_{dry}} \times 100 ]

Where:

• (W_{wet}) = weight before oven drying
• (W_{dry}) = weight after oven drying

flowchart LR
    A[Raw Timber] --> B[Seasoning (Moisture ≤ 15%)]
    B --> C[Cut & Prepare Battens]
    C --> D[Assemble Case Frame]
    D --> E[Fix Plywood Panels]
    E --> F[Wire Packing (Aluminium, ≥3mm)]
    F --> G[Final Assembly & Drilling]

This summarizes the critical construction parameters for wooden packing cases as per IS 7992.

IS 7992 - Packing of Tobacco: Key Specifications & Process

1. Case Assembly (Clause 5.4)

• Assemble case with bottom, two sides, two ends using 12 aluminium wires.
• Refer to Fig. 1 for wire placement and lengths.

2. Liner & Tobacco Filling (Clause 6.1)

• Place a suitable liner on all interior walls (agreed by purchaser & seller).
• Spread tobacco in layers, pressing firmly with a thick wooden plank.
• Typical case dimension (Clause 3.1) packs approx. 200 kg net mass of tobacco.
• Alternate filling and pressing ensure compact packing.

3. Closing & Sealing (Clause 7.1)

• Fold liner after filling.
• Close box with top shook (from 5.1.1).
• Seal case with 4 aluminium wires of suitable length (see Fig. 1).

Summary Table

flowchart TD
    A[Assemble case with 12 wires] --> B[Place liner inside case]
    B --> C[Fill tobacco in layers]
    C --> D[Press layers with wooden plank]
    D --> E[Fold liner]
    E --> F[Close with top shook]
    F --> G[Seal with 4 aluminium wires]

This ensures seaworthy, export-quality packing as per IS 7992.

IS 7992 - Closing the Box: Key Specifications & Details

1. Closing Procedure (Clause 7.1)

• After filling tobacco, fold the liner inside the box.
• Close the box with the top shook prepared as per Clause 5.1.1.
• Seal the case using 4 aluminium wires of suitable length (see Fig. 1).

2. Box Dimensions (Clause 3.1)

3. Material Specifications (Clause 4.2.2)

• Battens moisture ≤ 15% oven-dry mass.
• Battens must be straight-grained, free from defects (insect attack, knots, splits, decay).
• Refer IS 8358-1977 Appendix A for moisture testing.

4. Additional Notes

• Drill 6 holes on top, bottom, and sides for ventilation.
• Refer IS 4698-1968 Clause 2.2 for detailed packing procedure.

flowchart TD
    A[Filling Tobacco] --> B[Fold Liner]
    B --> C[Place Top Shook]
    C --> D[Seal with 4 Aluminium Wires]
    D --> E[Drill 6 Holes (Top, Bottom, Sides)]

This ensures a seaworthy, robust tobacco packing case per IS 7992 standards.

IS 7992 - Marking Specifications (Clause 8.1.2)

• Marking on Cases:

  • Cases may be marked with the ISI Certification Mark.
  • ISI Mark assures compliance with the Indian Standard through inspection, testing, and quality control supervised by ISI.
  • Continuous conformity checks are performed by ISI.

• Handling Instructions:

  • Marking may also include handling instructions per IS 1260 (Part 2) - 1979 (Pictorial markings for general goods).

• Dimensions for Typical Case (Clause 3.1):

• Note: Use of ISI Mark is governed by Indian Standards Institution (Certification Marks) Act and related rules.

Summary Diagram of Marking Process

flowchart TD
    A[Manufacturer] --> B[Produce Case]
    B --> C[Apply ISI Mark & Handling Instructions]
    C --> D[Quality Inspection by ISI]
    D --> E[Continuous Conformity Checks]
    E --> F[Assured Product Compliance]

References:

• IS 7992 Clause 8.1.2 (Marking)
• IS 1260 (Part 2) - 1979 (Handling Instructions)
• ISI Certification Mark guidelines