Home » Products » Foaming Agent Masterbatch » CE-305L Food Grade Foaming Agent Masterbatch | For LDPE/PP/ABS Plastics | Lightweight Injection Molding & Extrusion | Eliminate Sink Marks

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CE-305L Food Grade Foaming Agent Masterbatch | For LDPE/PP/ABS Plastics | Lightweight Injection Molding & Extrusion | Eliminate Sink Marks

This masterbatch foaming agent contains carrier, environmentally friendly foaming agent, nucleating agent, dispersant, antioxidant and other ingredients.

  • CE-305L

  • BenQi

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This masterbatch foaming agent contains carrier resin, eco-friendly foaming agent, nucleating agent, dispersing agent, antioxidant, and other components. Raw materials undergo a graded screening process, resulting in a concentrated particle size distribution. The product is environmentally friendly, produces fine and uniform cell structures, and its quality rivals that of imported counterparts. It is suitable for extrusion and injection molding foaming processes of general plastics such as LDPE, PE, PP, HIPS, ABS, and TPO.

Technical Parameters


  • Grade:  CE-305L

  • Chemical Composition:  Sodium bicarbonate salt complex

  • Carrier Resin:  LDPE

  • Appearance:  White granules

  • Decomposition Temperature:  165-210 °C

  • Gas Yield (STP):  40-50 ml/g

Product Advantages


  • Controllable decomposition rate

  • Fine and uniform cell structure

  • Eliminates plastic injection sink marks

  • Shortens injection molding cycle & Reduces product weight

  • Food-grade, eco-friendly, safe for food contact

Recommended Dosage


  • 0.5-2.0% (Injection Molding)

  • 0.5-1.5% (Extrusion)


 Applications


The characteristics of this masterbatch foaming agent (CE-305L) make it highly suitable for manufacturing a variety of daily necessities requiring lightweighting, shock absorption, thermal insulation, cost reduction, or improved surface quality. Considering its compatibility with plastic types (LDPE, PE, PP, HIPS, ABS, TPO) and processes (Extrusion/Injection Molding), as well as its food contact safety, here are some specific application directions:

  1. Kitchenware


    • Food Containers/Storage Boxes (PP, PE): Reduces weight, improves feel (less cold to touch), lowers cost. Food-grade safety is crucial.

    • Cup Lids/Sealing Lids (PP, HIPS): Lightweighting; a foamed layer provides better sealing elasticity and thermal insulation (prevents burning hands).

    • Cutlery (PP, HIPS): Such as foamed spoon/fork handles (reduces weight, improves grip) or disposable plates/bowls (lowers cost, provides insulation).

    • Cutting Boards (HDPE, PP): Reduces weight, improves shock absorption (quieter chopping, reduced impact on knife edges).

    • Cup/Travel Mug Insulation Layer (PP, ABS): Foamed layer extruded or co-extruded as insulation for heat/cold retention.

    • Plastic Wrap/Squeeze Bottles (LDPE): Adding small amounts of foaming agent reduces density, saving raw material costs.

  2. Household Items


    • Bathroom Products (PP, PE, TPO): Such as bath mats (lightweight, elastic, comfortable), tubs, buckets (lightweight, lower cost), toilet brush handles (shock-absorbing comfort).

    • Cleaning Tools (PP, ABS): Broom/mop poles and handles (lightweighting, shock absorption), brush bases (lightweight, lower cost).

    • Storage Bins/Boxes (PP, HIPS): Reduces weight, lowers cost, improves drop resistance.

    • Trash Cans (HDPE, PP): Reduces weight, lowers cost.

    • Clothes Hangers (PP, ABS): Lightweighting, lowers cost; foamed layer can add softness to prevent clothes slipping or deforming.

    • Slippers/Sandal Sole Material (EVA, PE, TPO): Extruded into sheets then die-cut; lightweight, elastic, comfortable, thermally insulating. TPO/EVA foam is common.

    • Flower Pots/Planting Containers (PP, PE): Lightweighting, easy to move, lowers cost.

  3. Packaging Materials


    • Protective Packaging (PP, PE): Replaces traditional EPS foam; extruded into sheets or profiles for cushioning liners in electronics, cosmetics, gifts, etc. More eco-friendly (recyclable), good protection, cost-effective.

    • Fresh Food Trays (HIPS, PP): Foaming provides better thermal insulation for freshness (especially in cold chain), lightweighting, lowers cost.

    • Bottle Cap Liners (LDPE, PP): Foamed liners offer better sealing, elasticity, and are lightweight.

  4. Sports & Leisure Goods


    • Floating Boards/Swimming Aids (PP, PE, EVA): Foaming provides buoyancy, lightweight.

    • Picnic Mats/Ground Sheets (PE): Extruded into foamed sheets, lightweight and easy to roll/carry, provides comfort and thermal/moisture insulation.

    • Helmet Liners (EPS, EPP, EPE): Although EPS/EPP are common, TPO or PE foam can also be used for certain helmet liners to provide shock absorption (must meet specific safety standards).

    • Toys (HIPS, ABS, PP): Such as building blocks (reduce weight, lower cost, improve feel), outdoor toys (lightweight, impact-resistant), toy car bodies (lightweighting, smooth surface).




Core Advantages Manifested in These Applications


  • Lightweighting: A core advantage for all applications, reducing shipping costs and improving user experience (lighter).

  • Cost Reduction: Reducing plastic raw material usage is the primary cost saving.

  • Thermal Insulation/Cold Resistance: Important for drinkware, food containers, fresh food trays, ground mats.

  • Shock Absorption/Cushioning: Evident in tool handles, slipper soles, protective packaging, helmet liners.

  • Improved Feel/Comfort: Reduces cold feel (containers), adds softness/elasticity (handles, soles, mats).

  • Eliminate Sink Marks & Surface Quality: Achieves smoother, more aesthetic surfaces on injection-molded housings (storage boxes, toys, appliance parts).

  • Shorten Injection Molding Cycle: Increases production efficiency, lowers unit cost.

  • Food-Grade Safety: Enables use in kitchenware directly contacting food.

  • Fine and Uniform Cell Structure: Ensures consistent product performance (e.g., strength, insulation) and appearance.





In summary, this masterbatch foaming agent can be widely applied in various plastic products for daily life, particularly in areas pursuing lightweightness, low cost, good feel, thermal insulation, or cushioning performance, while also enhancing product appearance (eliminating sink marks). From kitchen storage boxes to bathroom bath mats, from protective packaging to slipper soles, it finds its application.


Company Introduction

BENQI, founded in 2008, is a science and technology company that focus on the high-end modified foamingl agent & environmental friendly Ca-Zn stabilizer of plastic foaming industry, in the service of the universal plastics, engineering plastics, and rubber in high-end special foam industry, such as PVC,EVA,PE,TPE, TPR,PP,ABS,l PET etc.,which is famous known for the technical in this field.


Company's core members are deep in the foam industry more than 17 years of industry experience. Our company has a strong R&D scientist team, contains 1 doctor's degree, master's degree in 1 person, a bachelor's degree in 3, and establishes a strategicl cooperative relationship with Sun Yat-Sen University, South China University of technology. Our company is committed to provide customers with high performance special modification of foaming agent, also provide solutions for special foam industry.

1631524198874

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Contact Us to request free samples, detailed technical data sheets, or professional application consultation. Let's work together to elevate foaming to new heights!





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BENQl,founded in 2008, is a science and technology company that focus on the high-end modified foaming agent ,hihg technology stabilizer & foaming agent masterbatch of plastic industry.

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