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China PE Sintered Products Factory - Non-Toxic, Chemical-Resistant Tablets by Top Suppliers

Our PE fragrance tablets feature a uniform pore size distribution and excellent fluidity, making them an ideal choice for various applications. These tablets are resistant to strong acids, alkalis, salts, and most organic solvents, ensuring durability and reliability. With properties that include hydrophilicity, rapid liquid absorption, and high liquid storage capacity, our products stand out in the market. As a leading factory and suppliers in China, we guarantee that our non-toxic, tasteless tablets meet stringent GMP and FDA requirements. They contain no adhesives and possess remarkable mechanical properties, making them less prone to damage. Enjoy a wide range of chemical compatibility with our high-quality PE fragrance tablets, perfect for your needs

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    Product Details

    Product Description

    The application of PE sintered products in the field of life is categorized as follows:

    First Category

    Fragrance absorbing tablets, aromatherapy sticks, water-absorbing rings, and fragrance-diffusing balls

    Second Category

    Painted pen tips

    Third Category

    Aquarium foamers

    Fourth Category

    Flowerpot water-absorbing sticks / Support frame

    Fifth Category

    Liquid mosquito coil

    Sixth Category

    Headset/microphone filter element

    Seventh Category

    Coffee machine filter element

    Eighth Category

    Sweeper filter element

    Production Process

    The plastic sintering process is primarily divided into four stages: raw material processing, molding, sintering, and post-processing:

    1Raw Material Preparation and Mixing

    Material Selection: Commonly used plastics include polypropylene (PP), polyethylene (PE), and polytetrafluoroethylene (PTFE), which must be ground into powder with a particle size of 10–200 microns.
    Additive Formulation: Lubricants (e.g., zinc stearate), plasticizers, or reinforcing fibers (e.g., glass fibers) are added to improve flowability and final performance.
    Mixing Uniformity: The mixture is thoroughly blended using a ball mill or vertical mixer to ensure consistent distribution of components.

    2Forming Process

    Compression molding: Fill the mixed powder into a mold and cold-press it into a green body under 20–100 MPa pressure, suitable for simple geometric shapes (e.g., filter cores, cutting boards).
    Injection molding: Mix the powder with a binder and inject it into a mold, suitable for complex structures (e.g., comb teeth, medical device components).

    3Sintering Process

    Debinding Process: If a binder is used, it must be heated at 300–500°C to remove organic components.
    High-Temperature Sintering: Heat and hold below the plastic's melting point (e.g., PTFE at approximately 380°C) to form a dense or porous structure through particle diffusion. Controlling the heating rate (5–10°C/min) and atmosphere (nitrogen protection) is critical.
    Cooling and shaping: Slow cooling (≤5°C/min) to prevent internal stress cracking.

    4Post-processing and Quality Inspection

    Machining: Cutting, grinding, or drilling to meet dimensional accuracy requirements.
    5Surface treatment: Coating (anti-soiling) or polishing to enhance aesthetics.
    Performance testing: Testing porosity (for porous products), hardness (ASTM D785), and chemical resistance (e.g., acid-base immersion tests).

    PE Fragrance Tablets Existing Specification

    OD (mm) ID (mm) Thickness (mm) OD (mm) ID (mm) Thickness (mm) OD (mm) ID (mm) Thickness (mm)
    12 4 27 28 11 10 42 16 5
    15.5 8.5 10.5 30 6.5 7 42 20 6
    17 8 4.5 30 8 42 20 8
    18.5 5 5 30 9.5 9.5 45 4 8.5
    19 6.5 4 30 11 2 45 15 8
    20 3 5.3 30 11 6.5 45 25 6
    20 4 4 30 11 7.5 46 35 4
    20 5 5 30 15 5 46 37 10
    20 6 5.5 30 27 8 47 28 6.5
    20 6.5 4 31 7.5 5 48 13 5
    20 7 2.6 31 10 6.5 48 28 3
    20 7.5 4 31 11 2.2 48 33 5
    20 10 2.5 32 12 7.5 48 37 3.5
    20 11 6 32 13 8 48 38 12
    21 7.5 5 33 15 5 50 10.5 6
    22 7.5 5 33 24 5 50 6 10
    22 13.5 8 34 6 10 50 27 7.5
    22.5 12.5 5 34 21 4 50 33 5
    23 7.5 5.5 35 4.5 7 50 36 5
    24 6.5 5 35 5 13 51 15 10
    24 7 4.5 35 6 6.5 52 25 7
    24 9 8 35 9 .5 53 45 7.5
    24 9.5 4 35 22 4 53.5 35 25
    24 9.5 6 35 27 4 54 36 5.5
    26 6 3.5 37 7 4 55 25 5
    26 11 더 3 26 7 55 26 12
    26 12 4 38 6 4.5 55 28 5
    26.5 8 5 42 10 5 55 32 4
    27 7.5 7 42 10 9 57 12.5 5
    27 8 5 42 11.5 9.5 60 10 6
    27.5 4 12.5 42 12 5 62 48 11
    28 - 6 42 14 6 62 52 4.5
    28 8.5 8 42 15.5 10 63 26 6
    - - - 33 13.5 4 80 10 60

    Frequently Asked Questions

    What are the primary applications of PE sintered products in daily life?

    PE sintered products are widely used in daily life applications, including fragrance absorbing tablets, aromatherapy sticks, painted pen tips, aquarium foamers, flowerpot water-absorbing sticks, liquid mosquito coils, and filter elements for headsets, coffee machines, and sweepers.

    Which materials are commonly used in the plastic sintering process?

    The process commonly utilizes plastics like polypropylene (PP), polyethylene (PE), and polytetrafluoroethylene (PTFE). These materials must be ground into a fine powder with a particle size of 10–200 microns before processing.

    What is the difference between compression molding and injection molding in sintering?

    Compression molding involves cold-pressing mixed powder in a mold under 20–100 MPa pressure, making it ideal for simple shapes like filter cores. Injection molding mixes the powder with a binder to form complex structures like medical device components.

    Why is temperature control critical during the sintering and cooling stages?

    Heating must remain below the plastic's melting point to ensure proper particle diffusion. During cooling, a slow rate of ≤5°C/min is strictly maintained to prevent internal stress cracking and ensure structural integrity.

    How is the quality of sintered plastic products tested?

    Quality is assessed through performance testing that evaluates porosity (specifically for porous products), hardness testing (per ASTM D785 standards), and chemical resistance testing via acid-base immersion tests.

    Are custom dimensions available for PE Fragrance Tablets?

    Yes, there is a wide range of existing specifications with Outer Diameters (OD) ranging from 12mm up to 80mm, and various Inner Diameters (ID) and thicknesses to match different product requirements.