Particle boards of wood and other lignocellulosic materials (medium density) for general purposes -Specification

IS 3087: Scope & Key Specifications Summary

Scope (Clause 3.0):
Defines terms related to wooden screws; for undefined terms, refer to IS 707.

Key Specifications from IS 3087

1. General Requirements (Clause 12.1)

• Screws must meet dimensional and material quality standards.
• Suitable for wood fastening with specified mechanical properties.

2. Test Specimens and Number of Tests (Clause 10.2)

• Specifies sample sizes and testing protocols to ensure compliance.

3. Screwing and Nailing Table (Clause 10.1):

• Pilot Drill Size: Diameter of pre-drilled hole to avoid wood splitting.
• Depth of Edge: Minimum distance from screw to wood edge for effective fastening.

Practical Notes:

• Always select pilot drill size slightly smaller than screw core diameter.
• Maintain depth of edge as per table to prevent splitting and ensure load transfer.

flowchart TD
    A[Select Screw Size] --> B{Check Pilot Drill Size}
    B -->|Use Table| C[Drill Hole with Specified Diameter]
    C --> D{Check Depth of Edge}
    D -->|Maintain Minimum| E[Insert

IS 3087 Key References & Specifications

1. Definitions (Clause 3.0)

• Use IS 707 for definitions not covered in IS 3087.

2. Routing and Moulding Speeds (Clause 6.2, Table B-6)

3. Screwing and Nailing (Clause 10.1, Table B-10)

4. Testing (Clause 10.2)

• Specifies test specimens and number of tests for quality control.

Summary:

• Use IS 707 for additional definitions.
• Follow spindle speeds based on tool type for routing/moulding.
• Pilot drill size and edge depths are critical for screw installation.
• Adhere to testing protocols for specimen preparation.

If needed, I can provide detailed formulas or diagrams for screw holding capacity or routing parameters.

IS 3087: Terminology & Key Specifications

1. Terminology (Clause 3.11)

• Three-Layer Particle Board:
  • Made of 3 layers of particle-resin mix.
  • Face layers: finer, thinner particles with higher resin content (denser, stronger skin).
  • Core layer: coarser, bigger particles with lower resin content.
  • Results in a sandwich construction enhancing strength and density.

2. Classes & Types of Particle Boards (Clause 4)

• Grades I & II apply only to flat pressed three-layer/multilayer boards, based on physical/mechanical properties (see Table 1 in IS 3087).

3. Testing & Conformity (Clauses 10.2 & 10.3)

• Test specimens and number of tests are specified to ensure quality.
• A lot passes if no group of specimens fails any characteristic test.

Summary Diagram: Particle Board Structure

graph LR
  A[Face Layer (Fine Particles, High Resin)] --> B[Core Layer (Coarse Particles, Low Resin)]
  B --> C[Face Layer (Fine Particles, High Resin)]
  style A fill:#f9f,stroke:#333,stroke-width:2px
  style B fill:#ccf,stroke:#333,stroke-width:2px
  style C fill:#f9f,stroke:#333,stroke-width:2px

This sandwich layering provides enhanced mechanical performance.

For detailed mechanical properties, refer to Table 1 in IS 3087 and IS 707 for additional definitions.

IS 3087: Classes and Types of Particle Boards

Classes and Grades (Clause 4)

Key Points:

• Three-layer boards have finer particles on the faces and coarser particles in the core, with higher resin content on the faces, improving strength and density.
• Grades I and II apply only to flat pressed three-layer/multilayer particle boards, based on mechanical and physical properties (see Table 1 in IS 3087 for detailed values).
• Formaldehyde emission classes E1 and E2 apply to all classes and grades (see Clause 9.7).
• Sub-classification based on formaldehyde content is mandatory (Clause 8.3).

Summary Table for Grades (Excerpt from Table 1):

flowchart TD
    A[Particle Board Classes] --> B[Flat pressed, single layer (FPS)]
    A --> C[Flat pressed, 3-layer/multilayer (FPT)]
    C --> C1[Grade I (FPT-1)]
    C --> C2[Grade II (FPT-2)]
    A --> D[Extrusion pressed, solid (XPS)]
    A --> E[Extrusion pressed, tubular (XPT)]

For detailed mechanical properties, refer to Table 1 of IS 3087.

IS 3087: General Requirements Summary

1. Screw Withdrawal Resistance

• As per Clause 10.2.1 and tested per IS 2380 (Part 14).
• The average screw withdrawal resistance must meet or exceed values in Table 1 (x column).
• Ensures adequate fastening strength for plywood.

2. Sampling and Testing

• Clause 11.1 & 11.3-11.10 specify test methods and sample sizes.
• Samples must conform to requirements in Clause 9 and Table 1 (physical and mechanical properties).
• Tests include moisture content, bonding quality, density, and mechanical strength.

3. Criteria for Conformity (Clause 10.3)

• A lot passes if no group of test specimens fails any characteristic.
• Ensures consistent quality across production batches.

Key Table Extract (Example from Table 1 for Screw Withdrawal Resistance)

(Values indicative; refer to IS 3087 Table 1 for exact values)

Summary Flowchart for Conformity Testing

flowchart TD
    A[Start: Sample Collection] --> B[Test Specimens as per 11.3-11.10]
    B --> C{Meets Requirements in Clause 9 & Table 1?}
    C -- Yes --> D[Lot Conforms]
    C -- No --> E[Lot Rejected]

Note: Always refer to the latest IS 3087 edition for precise values and detailed test procedures.

IS 3087: Materials and Manufacture — Key Points

1. Test Specimens and Number of Tests (Clause 10.2 & 10.2.1)

• Test specimens must conform to IS 2380 (Part 14) for screw withdrawal resistance.
• Average screw withdrawal resistance ≥ value in Table 1 (x).

2. Testing Requirements (Clause 11.1)

• Samples tested as per Clauses 11.3 to 11.10.
• Must meet requirements in Clause 9 and Table 1.

3. Tensile Strength Perpendicular to Surface (Clause 11.9.1)

• Tested on 3 specimens from 10.2.1 (g).
• Tests: (a) cyclic, (b) accelerated water resistance.
• Average tensile strength ≥ value in Table 1 (ix).

Key Specifications from Table 1 (Examples):

(Refer to IS 3087 Table 1 for exact values)

Summary:

• Use IS 2380 (Part 14) for screw withdrawal tests.
• Maintain average values ≥ Table 1 limits.
• Perform cyclic and water resistance tests for tensile strength.
• Ensure all specimens and tests comply with Clauses 9, 10, and 11.

flowchart TD
    A[Start: Material Sampling] --> B[Test Specimens per 10.2]
    B --> C[Screw Withdrawal Test (IS 2380 Pt 14)]
    C --> D{Avg. Resistance ≥ Table 1 (x)?}
    D -- Yes --> E[Tensile Strength Test (Cyclic/Water)]
    D -- No --> F[Reject Material]
    E --> G{Avg. Tensile Strength ≥ Table 1 (ix)?}
    G -- Yes --> H[Material Accepted]
    G -- No --> F

This ensures materials meet IS 3087 quality standards for manufacture and performance.

IS 3087: Dimensions and Tolerances for Particle Boards

1. Standard Sizes (Clause 8.1)

Note: Custom sizes allowed if agreed by manufacturer and purchaser.

2. Dimensional Tolerances (Clause 8.3)

3. Screwing and Nailing (Clause 10.1)

This summary ensures compliance with IS 3087 for particle board dimensions, tolerances, and fastener specifications.

IS 3087: Physical Characteristics - Key Specifications

1. Density Test (Clause 11.3)

• Density is determined as per standard test methods (not explicitly given here).
• Important for quality control of boards.

2. Dimensional Tolerances (Clause 8.3)

3. Screw Withdrawal Resistance (Clause 10.2.1)

• Tested as per IS 2380 (Part 14).
• Average screw withdrawal resistance must not be less than values in Table 1 (specific values depend on board type).

4. Water Absorption (Clause 10.2.1 & 12)

• Tested according to IS 2380 (Part 16).
• Average water absorption must not exceed limits in Table 1.

Summary Table (Excerpt from Table 1 for Physical Properties)

Note: Refer to IS 3087 Table 1 for exact numerical values based on board type and thickness.

flowchart LR
  A[Board Sample] --> B[Measure Dimensions]
  B -->|Check Tolerance| C{Within Limits?}
  C -->|Yes| D[Proceed to Density Test]
  C -->|No| E[Reject or Rework]
  D --> F[Measure Density]
  F --> G[Perform Screw Withdrawal Test]
  G --> H[Perform Water Absorption Test]
  H --> I{Meets Physical Specs?}
  I -->|Yes| J[Accept Board]
  I -->|No| E

This concise overview covers key physical characteristics and tolerances per IS 3087. For detailed numeric limits,

IS 3087: Sampling and Test Specimens – Key Points

1. Sampling & Test Specimens (Clause 10.2, 11.1)

• Samples and test specimens must be prepared and tested as per Clauses 11.3 to 11.10.
• Tests should conform to requirements in Clause 9 and Table 1.
• Water absorption tests follow IS 2380 (Part 16).
• Average water absorption must not exceed limits in Table 1 (ii).

2. Water Absorption Test (Clause 10.2.1)

• Specimens prepared as per 10.2.1(c).
• Tested per IS 2380 (Part 16).
• Average water absorption ≤ specified limit (usually around 6% max for common bricks).

3. Criteria for Conformity (Clause 10.3)

• A lot is conforming if no group of test specimens fails any characteristic.
• All samples must pass tests as per Clause 11.

Summary Table (Example from Table 1 for Water Absorption):

Flowchart: Sampling & Testing Process

flowchart TD
    A[Sample Collection] --> B[Prepare Test Specimens]
    B --> C[Conduct Tests (11.3 - 11.10)]
    C --> D{Pass All Tests?}
    D -- Yes --> E[Lot Conforms]
    D -- No --> F[Lot Rejected]

Note: Refer to IS 3087 Table 1 and IS 2380 (Part 16) for detailed test methods and limits.

IS 3087: Key Test Methods & Specifications

1. Test Specimens & Number of Tests (Clause 10.2)

• Specimens prepared as per 10.2.1 (including shape, size).
• Number of specimens depends on test type (e.g., 3 specimens for tensile strength tests).

2. Testing Standards (Clause 11.1 & 11.9.1)

• Tests include cyclic test, accelerated water resistance, tensile strength perpendicular to surface.
• Average tensile strength (3 specimens) must meet minimum values in Table 1 (ix).

3. Water Absorption (Clause 10.2.1 & 11.1)

• Conducted per IS 2380 (Part 16).
• Average water absorption must not exceed limits in Table 1 (ii).

Summary Table (Extract from Table 1):

Visual: Test Flow for Tensile Strength

flowchart TD
    A[Prepare 3 Test Specimens] --> B[Conduct Cyclic or Accelerated Water Resistance Test]
    B --> C[Measure Tensile Strength Perpendicular to Surface]
    C --> D{Average ≥ Table 1(ix) value?}
    D -- Yes --> E[Pass]
    D -- No --> F[Fail]

Note: Refer IS 3087 Table 1 for exact numeric limits.

IS 3087: Marking and Labeling of Particle Boards

Key Marking Requirements (Clause 13.1)

Each particle board must be legibly marked near any edge with:

• Manufacturer's name or trade-mark
• Designation of particle board (refer Clause 4)
• Thickness (refer Clause 8.2)
• Date of manufacture
• ECO-Mark labelling criteria, if applicable

BIS Certification Mark (Clause 13.2 & 13.2.1)

• Particle boards may bear the BIS Standard Mark.
• Use of the Standard Mark is regulated by the Bureau of Indian Standards Act, 1986.
• Licensing details for the Standard Mark are available from BIS.

Relevant Specification Summary

Example Marking Layout (Edge of Particle Board)

graph LR
A[Edge of Particle Board] --> B[Manufacturer Name/Trade Mark]
A --> C[Designation]
A --> D[Thickness]
A --> E[Date of Manufacture]
A --> F[ECO-Mark Criteria]
A --> G[BIS Standard Mark (optional)]

For detailed screw withdrawal resistance values and thickness tolerances, refer to Table 1 and Clause 8.2 of IS 3087.

IS 3087: Optional Requirements for ECO-Mark (Clause 12)

• General Requirements (12.1):
  Manufacturers must comply with environmental laws and obtain clearances:

  • Consent from State Pollution Control Board under Water Acts (1974, 1977) and Air Act (1981).
  • Authorization under Environment (Protection) Act, 1986.
  • Compliance with forest department rules.

• Specific Requirements (12.2):
  Particle boards must meet ECO-Mark specific criteria as per relevant clauses (e.g., mechanical and environmental properties).

• Screw Withdrawal Resistance (10.2.1):
  Tested per IS 2380 (Part 14), average screw withdrawal resistance ≥ values in Table 1 (x).

Key Points for ECO-Mark Certification:

Screw Withdrawal Resistance (Typical Table Extract)

(Refer to IS 3087 Table 1 for exact values)

flowchart TD
    A[Manufacturer] --> B[Obtain Environmental Clearances]
    B --> C[Produce Particle Board as per IS 3087]
    C --> D[Test Screw Withdrawal Resistance per IS 2380]
    D --> E[Submit Certificates to BIS]
    E --> F[Apply for ECO-Mark Certification]

Summary: To obtain ECO-Mark, particle boards must meet environmental clearances and mechanical criteria (especially screw withdrawal resistance), supported by proper documentation.

IS 3087 Key References Summary

1. Definitions (Clause 3.0)

• Use IS 707 for additional definitions beyond those in IS 3087.

2. Recommended Spindle Speeds for Routers and Moulders (Clause 6.2)

3. Screwing and Nailing (Clause 10.1)

4. Test Specimens and Number of Tests (Clause 10.2)

• Specifies requirements for test specimens and testing frequency (refer to IS 3087 for detailed procedures).

Note: For detailed design, machining, and testing protocols, consult the full IS 3087 document and IS 707 for definitions.

flowchart TD
    A[IS 3087 References] --> B[Definitions (IS 707)]
    A --> C[Spindle Speeds]
    C --> C

IS 3087: Guidance on Finishing and Joinery - Key Points

1. Finishing - Hand Sanding

• Use compressive stones with grit size 50 to 80 for hand sanding (Clause B-7.3).

2. Plastic Laminates Application

• Use resin glues or contact adhesives for bonding laminates to particle boards.
• Casein glues are not suitable (Clause B-8).

3. Joinery Work - Mechanical Properties (Table 1 summary)

4. Sawing and Routing Speeds (Clause B-6.2)

5. Screwing and Nailing - Pilot Drill & Edge Depth (Clause 10.1)