Expanding agents

Their purpose is to lighten the molded parts and/or reduce the density of the extruded product.
Density is the ratio between mass and volume; keeping volume constant, the higher the density, the greater the weight of the manufactured product.
In this case, expanding additives help keep density low with the aim of obtaining lighter finished products.

Expanding additives improve effects such as sink marks and voids in moldings.
When a mold is not completely filled, local depressions and/or internal empty bubbles may form, and result in final products that appear to have been “hollowed out.”
To solve problems of this kind, we use expanding additives that release gas inside the mold in order to compress the molten material homogeneously, thereby facilitating the thorough filling of the mold.
Using such masters reduces the mechanical characteristics of the manufactured product.

Possible processing problems
Incorrect temperature management can lead to a reflux of material during the extrusion or molding, with the possible formation of gas.
In this case, percentage and temperature settings must be calibrated for the machine and the process involved.

CODE

COMMERCIAL DESCRIPTION

COMPATIBILITY

CODE
COMMERCIAL DESCRIPTION

RIFRACHEM PE EXPOR AZ/B5

SPECIFIC PRODUCT FOR EVA APPLICATIONS, LOWERING DENSITY AND LIGHTENING THE PIECE. PRODUCES A FOAMING EFFECT. ACTIVATION TEMPERATURE HIGHER THAN 100° C
COMPATIBILITY
LDPE, LLDPE, PP OMO, PP COPO, EVA
CODE
COMMERCIAL DESCRIPTION

RIFRACHEM PE EXPOR AZ/25

RECOMMENDED PRODUCT WHEN YOU NEED TO LIGHTEN AND REDUCE THE DENSITY OF THE ARTICLE
COMPATIBILITY
LDPE
CODE
COMMERCIAL DESCRIPTION

RIFRACHEM PE EXPOR AZ/128

IDEAL PRODUCT FOR POLYOLEFINS, TO BE USED WHEN YOU NEED TO OBTAIN A FOAM EFFECT. LOWERS DENSITY AND LIGHTENS THE PIECE. ACTIVATION TEMPERATURE BETWEEN 200 AND 210° C
COMPATIBILITY
LDPE, LLDPE, HDPE, PP OMO ,PP COPO
CODE
COMMERCIAL DESCRIPTION

RIFRACHEM PS EXPOR AZ/215

IDEAL PRODUCT FOR PS, WHEN YOU NEED TO OBTAIN A FOAM EFFECT. LOWERS DENSITY AND LIGHTENS THE PIECE. ACTIVATION TEMPERATURE BETWEEN 200 AND 210° C
COMPATIBILITY
SAN, PSA, PSC, ABS
CODE
COMMERCIAL DESCRIPTION

RIFRACHEM PE EXPOR APF/D 004

PRODUCT FOR USE IN POLYOLEFINS, IDEAL FOR SOLVING SUCTION PROBLEMS, ALSO HAS A GOOD NUCLEANT FUNCTION. ACTIVATION TEMPERATURE 180° C
COMPATIBILITY
LDPE,LLDPE,HPDE,PP OMO,PP COPO