PVC foam regulator is a polymer additive used to improve the performance of PVC foam products. Its main functions are to increase melt strength, promote uniformity of foam cells, prevent cell collapse, and optimize processing performance. The following is a comprehensive introduction to PVC foaming regulators:
1. The role of PVC foaming regulator
Improve melt strength: prevent bubbles from bursting or merging during the foaming process, and make the cell structure more uniform.
Stable cell structure: reduces cell collapse, improves the mechanical strength and surface quality of the product.
Improve processing performance: Optimize the rheological properties of PVC melt to make it more suitable for extrusion, rolling, or injection molding foaming processes.
Adjusting foam density: controlling the size and distribution of foam pores to achieve the desired lightweight effect of the product.
2. Classification of PVC foaming modifiers
(1) Classified by chemical composition
Acrylic esters (ACR type): the most common, such as methyl methacrylate (MMA) – butyl acrylate (BA) copolymers, have excellent melt reinforcement effects.
Styrene acrylonitrile (SAN type): It has good heat resistance and is suitable for high-temperature foaming processes.
MBS (methyl methacrylate butadiene styrene): It has both toughening and foaming regulation functions.
(2) Classified by physical form
Lotion type: directly used for PVC paste resin foaming (such as artificial leather, wallpaper).
Powder type: used for foaming hard PVC (such as laminated foam boards, profiles).
3. Application fields of PVC foaming regulator
| application area | typical products | Regulator requirements |
| Architectural decoration | PVC foam board, skirting board, imitation wood profile | High melt strength, uniform pore size, and good weather resistance |
| Automotive Interior | Instrument panel, door panel, ceiling | Low odor, high temperature resistance and aging resistance |
| packaging materials | Buffer packaging, food trays | Non toxic and compliant with FDA standards |
| Shoe materials and synthetic leather | EVA/PVC foam sole, synthetic leather | Good softness and high resilience |
4. Selection factors of PVC foaming regulator
Foaming methods (free foaming, skin foaming, chemical foaming, physical foaming)
Processing technology (extrusion, injection molding, rolling)
PVC formula (hard PVC, soft PVC, filling system)
Type of foaming agent (AC foaming agent OBSH、 Sodium bicarbonate, etc
5. Mainstream brands in the market*
-Foreign brands:
-Paraloin Chemistry ™ K-400）
-Akoma (Durastrength) ®）
-Mitsubishi Liyang (Metablen) ®）
-Domestic brands:
-Nippon Chemical (ACR series)
-Ruifeng High Materials (RF Series)
-Bontecn Group (KF series)
Post time: Apr-10-2025
