Prelaminated medium density fibre board -Specification

IS 14587 Scope - Key Specifications & Properties

This standard specifies physical and mechanical properties for grades of engineered wood panels.

Physical & Mechanical Properties (Grade I & II)

IS 14587 - Key Definitions & Specifications Summary

Definitions (Clause 3.1)

• Definitions specific to this standard apply here.
• For other terms, refer to IS 707.

Physical & Mechanical Properties (Clause 10.9)

IS 14587: Grades and Types of Prelaminated Medium Density Fibre Boards (PMDF)

1. Grades and Types (Clause 4.3)

(Exact designation depends on impregnation and overlay type)

2. Key Physical & Mechanical Properties (Table from Clause 10.9)

Summary

IS 14587: Materials and Components Key Specifications

Important Test Methods (Annexes)

• Resistance to Cracking Under Heat (Annex D)

  • Specimen: 100x100 mm, full thickness.
  • Temperature: 70±2°C for 24h, then 100±2°C for 2h.
  • Observe for surface cracks.

• Resistance to Cigarette Burn (Annex E)

  • Specimen: 200x100

IS 14587: Physical & Mechanical Requirements Summary

IS 14587: Sampling and Inspection Key Points

1. Scale of Sampling (Clause 9.1 & Table 9.1.1)

Number of boards to be selected from a lot based on lot size:

2. In Case of Failure (Clause 9.3.1)

• If a sample fails, double the samples are taken for retesting.
• The lot passes only if all these additional samples conform to specifications.

3. Test Specimens and Number of Tests (Clause 9.2)

• Test specimens are selected from the sampled boards.
• Number of tests depends on the property being tested and is specified in the code.

Summary Flow Diagram

flowchart TD
    A[Select Lot] --> B[Determine Lot Size N]
    B --> C[Select n Samples (from Table 9.1.1)]
    C --> D[Test Samples]
    D --> E{Pass?}
    E -- Yes --> F[Lot Accepted]
    E -- No --> G[Double Samples Taken]
    G --> H[Test Double Samples]
    H --> I{All Pass?}
    I -- Yes --> F
    I -- No --> J[Lot Rejected]

This ensures statistically valid sampling and quality assurance for prelaminated MDF boards per IS 14587.

IS 14587: Marking and Labeling of Prelaminated MDF Boards

1. Marking Requirements (Clause 11.1)

Each board edge shall be legibly and indelibly marked with:

• Manufacturer's name or trademark
• Grade and type of board
• Thickness (in mm)
• Batch number and year of manufacture

2. BIS Certification Mark (Clause 11.2)

Boards may carry the Standard Mark indicating BIS certification.

3. Key Physical & Mechanical Properties (Table from Clause 10.9)

4. Testing Notes

• Cyclic Test: 72h water immersion (27±2°C), 24h air drying, 72h heating at 70°C; repeated 3 cycles before tensile strength test.
• Accelerated Water Resistance: Boiling water immersion for 2h

IS 14587 - Key Test Methods & Specifications

1. Test Specimens & Number of Tests (Clause 9.2)

• Number of specimens: Minimum 3 per test.
• Specimens must have compact edges, no loose core particles.

2. Resistance to Cracking of Lamination Under Heat (Annex D)

3. Resistance to Cigarette Burn (Annex E)

4. Resistance to Stain (Annex F)

• Staining agents: Coffee, 10% Acetic acid.
• Specimens covered with glass covers, staining agent applied for specified time.
• Clean and examine for stains after washing.

5. Physical & Mechanical Properties (Table 1, Clause 10.9)

IS 14587 - Surface Abrasion Resistance Test

Key Specifications & Setup:

• Specimen size: Circular disc ~130 mm diameter or square ~120 mm (corners rounded to 130 mm diagonal), with a 6 mm central hole.
• Conditioning: Specimens and abrasive paper conditioned at 27 ± 2°C, 65 ± 5% RH for ≥72 hours.
• Cleaning: Use organic solvent (e.g., trichloroethane) before conditioning.
• Test atmosphere: 27 ± 2°C, 65 ± 5% RH (conditioning chamber).
• Vacuum suction: Two nozzles 77 mm apart, 1-2 mm above specimen surface, vacuum 1.5 to 1.6 × 10⁻³ N/mm².

Test Principle:

• Specimen rotates against two loaded cylindrical wheels covered with abrasive paper.
• Wheels abrade an annular track on the specimen.
• Abrasion resistance = Number of revolutions to reach defined wear-through.

Important Notes:

• Wheels positioned equidistant from specimen axis but not tangential.
• Measure revolutions until surface wear-through to sublayer.

Summary Table for Specimen Preparation

Test Setup Diagram (Simplified)

graph LR
A[Specimen Disc] -- Rotates --> B[Abrasive Wheels]
B -- Abrade --> A
C[Suction Nozzles] -- Positioned 77 mm apart, 1-2 mm above surface --> A

This method ensures consistent and reproducible measurement of surface abrasion resistance of decorative sheets per IS 14587 Clause 10.10 and Annex B.

Resistance to Crack Test (IS 14587: Clause 10.12 & Annex D)

• Purpose: Ensure no cracks or delamination in test specimens.
• Method: As per Annex D (specific procedure details in IS 14587 Annex D).
• Acceptance: Specimen must show no signs of cracks or delamination after testing.

Related Mechanical Properties (From Table 1, Clause 10.9)

Notes:

• Modulus of rupture and elasticity are tested as per IS 2380 (Part 4).
• Crack resistance test is qualitative: no cracks/delamination allowed.
• Tensile strength after cyclic and water resistance tests are also specified (Clause 1.7).

flowchart TD
    A[Test Specimen] --> B[Conduct Crack Resistance Test (Annex D)]
    B --> C{Cracks or Delamination?}
    C -- No --> D[Pass]
    C -- Yes --> E[Fail]

IS 14587: Resistance to Cigarette Burn Test (Clause 10.13 & Annex E)

Test Method Summary (Annex E)

• Number of specimens: 3
• Specimen size: 200 mm × 100 mm (full thickness)
• Test procedure:
  • Place a glowing cigarette horizontally on the specimen surface.
  • Keep it for 60 seconds exactly.
  • Remove the cigarette and clean the area with water or suitable solvent.
  • Observe for any blistering or color change on the surface.

Key Specifications

Important Notes

• Specimens must be free from loose core particles.
• Test immediately after preparation.
• Record observations carefully (Clause 6.2).

Visual Concept (Mermaid Diagram)

flowchart TD
    A[Prepare 3 specimens (200x100 mm)] --> B[Place glowing cigarette horizontally]
    B --> C[Keep for 60 seconds]
    C --> D[Remove cigarette]
    D --> E[Clean with water/solvent]
    E --> F{Observe surface}
    F -->|No blister or stain| G[Pass]
    F -->|Blister or stain present| H[Fail]

This test ensures decorative laminates resist cigarette burns without permanent damage, critical for durability and safety.

IS 14587 - Resistance to Stain Test (Clause 10.14 & Annex F)

Key Specifications:

• Specimens: Size as per sample board, surface intact.
• Staining Materials:
  • Coffee
  • Acetic acid solution (10% concentration)
• Test Duration: Staining agents applied, covered with glass covers to prevent evaporation, and left for a specified time (usually 24 hours).
• Cleaning: After exposure, wash off stain with water, solvent, or domestic abrasive cleaner.
• Acceptance Criteria: No stain should remain on the specimen surface after cleaning.

Test Procedure Summary (Annex F):

Important Notes:

• Use separate specimens for each staining material.
• Observe surface closely for staining or damage.
• Record observations as per Clause 6.2.

flowchart LR
    A[Prepare Specimen] --> B[Apply Staining Material]
    B --> C[Cover with Glass Cover]
    C --> D[Keep for Specified Time]
    D --> E[Wash & Clean Surface]
    E --> F{Stain Present?}
    F -- No --> G[Pass Test]
    F -- Yes --> H[Fail Test]

This ensures decorative laminates resist common household stains, maintaining aesthetic and functional quality.

IS 14587: Environmental and ECO Mark Requirements Summary

• Environmental Clearance (Clause 11.1.2):
  Manufacturer must obtain clearance from the State Pollution Control Board under:

  • Water (Prevention and Control of Pollution) Act, 1974
  • Air (Prevention and Control of Pollution) Act, 1981
  • Water Cess Act, 1977
  • Environment (Protection) Act, 1986
    Also comply with Forest Department rules.

• ECO Mark Compliance (Clause 5.1 & 11.2):
  Medium Density Fibre Board (MDF) must meet ECO Mark requirements as per IS 12406.
  Specific ECO Mark criteria are detailed in IS 12406 (e.g., formaldehyde emission limits, recycled content).

• Documentation:
  Manufacturer must submit certificates/declarations to BIS for ECO Mark certification.

Key Reference Table: ECO Mark Criteria (from IS 12406)

flowchart TD
    A[Manufacturer] --> B[Obtain Environmental Clearance]
    B --> C[Produce MDF as per IS 12406 ECO Mark]
    C --> D[Submit Certificate/Declaration to BIS]
    D --> E[Receive ECO Mark Certification]

Note: Refer IS 12406 for detailed ECO Mark test methods and limits.

IS 14587: Certification and Standard Mark Usage Summary

1. Certification Marking (Clause 11.2)

• Prelaminated Medium Density Fibre Boards (MDF) may bear the BIS Standard Mark.
• Usage governed by BIS Act, 1986 and related rules.
• License conditions for Standard Mark use are provided by BIS.

2. Key Physical & Mechanical Properties (Table from Clause 10.9)

3. Special Tests (Clause 1.8)

• Cyclic Test: 3 cycles of water immersion (72h), air drying (24h), and heating (70°C for 72h), then tensile strength test.
• Accelerated Water Resistance Test: Boiling water immersion for 2h, cooling, then tensile strength test.

IS 14587: Key Test Methods & Specifications from Annexes

Annex D: Resistance to Cracking of Lamination under Heat

• Specimens: 3 pieces, 100 mm × 100 mm, full thickness
• Test:
  • Oven at 70 ± 2℃ for 24 hours, observe cracks
  • Oven at 100 ± 2℃ for 2 hours, observe cracks/blemishes

Annex E: Resistance to Cigarette Burn

• Specimens: 3 pieces, 200 mm × 100 mm, full thickness
• Test: Place glowing cigarette for 60 s, clean, check for blisters or discoloration

Annex F: Resistance to Stain

• Specimens: As per Clause 9.2
• Staining agents: Coffee, 10% acetic acid solution
• Test: Apply stain, cover with glass, keep for specified time, clean, observe staining

Conditioning (Clause 3.2)

• Chamber conditions:
  • Temperature: 27 ± 2℃
  • Relative Humidity: 65 ± 5%

Mechanical Properties (Clause 10.9, Table 1)

Summary Diagram: Test Sequence for Heat Resistance