R i v e r d a l e   G l o b a l
Additives

+GLOBAL PLUS™
SEALED ADDITIVES.

Economically adding performance, protection and sustainability

Slip Agents

+Glide™

Plastic processing often needs a slip agent to assist in polymer flow and provide internal and external slip characteristics. +Glide™ can improve cycle times, dispersion, along with the assembly and release of molded parts, all creating energy savings. Consumer packaging requirements often need slip for the finished product, and the processor may need slip to improve processing and plastic parts assembly.

Process

Injection molding for consumer packaging. Letdown for products can range from 0.20% to 1.00% depending on application.

Problem

Surface performance of P/P needs to be altered in order for molded parts to work in the desired application.

Solution

Add +Glide™ to the melting process, providing a smooth feel and the functional characteristics.

Liquid Light Stabilizer Agents

+Shield™

We offer liquid light stabilizers that are formulated with hindered amines (HALS) as well as light stabilizers that are formulated with UV absorbers. We also offer blends of HALS with UV absorbers for improved performance depending on end use application. Ultraviolet (UV) radiation from the sun will need the combination of HALS and antioxidants for long-term stability and product recyclability. +Shield™ offers protection in two ways, against photo-oxidation and it can protect plastic packaging from ultraviolet rays up to 390 nm.

Process

Injection molding for plastic outdoor furniture. Letdown for products can range from 0.04% to 2.00% depending on application.

Problem

Plastics crack, craze and discolor when subjected to UV light.

Solution

Add +Shield™ to the plastic so the outdoor furniture will maintain its quality and functional use for many years depending on the amount of additive used.

Nucleating Agents

+Speed™

Our liquid nucleating agents improve the physical properties of semi-crystalline polyolefins, which improve cycle times, production capacity and quality, and provide energy savings. When our clarifying agent is added to polypropylene, the size of crystalline structures in the polymer reduces to improve the stiffness and clarity. Additionally, when added to the process, the rate of crystal initiation is increased dramatically so the crystals become smaller in size, clarifying the polypropylene. +Speed™ offers a combination of high crystalline temperature in the polymer with the most isotropic (uniform) shrinkage in your finished product.

Process

Injection molding for consumer packaging. Letdown for products can range from 0.10% to 0.50% for nucleating agents and 0.40% to 1.00% for clarifying agents depending on applications.

Problem

Poor part quality with varying thickness and warpage at desired cycle time.

Solution

Add +Speed™ to P/P which will improve isotropy, part quality, warpage, cycle time as well as override color influence on the crystallization temperature and shrinkage.

Antioxidant Agents

+Guard™

For higher processing temperatures, adding additional antioxidant stabilizer can maintain the integrity of the polymer. Degradation of polymers, due to excessive heat, can affect the process, product stability and screw barrel contamination. Antioxidant additions to the combinations of virgin and PCR resins can provide heat stability to maintain a healthy polymer. +Guard™ solutions range from a single functional antioxidant, for processing with higher heat conditions, to multifunctional products that improve heat stability and recyclability.

Process

Injection molding for plastic packaging and consumer packaging. Letdown for products can range from 0.05% to 1.00% depending on application.

Problem

Higher profile heats and shear heat will start to degrade resin.

Solution

Add +Guard™ to the process which will protect the resin from higher heats and degradation, and therefore reduce contamination from building up on screws and barrels. The end result is a better product and less downtime.

Processing Aid Agents

+Zero™

Our processing aid agents prevent the buildup of static electric charges that occur on the surface of plastic parts while processing, and also function as an excellent mold release agent so that cycle times can be shortened, resulting in energy savings. With multi cavity molds, +Zero™ provides good mold release of parts affected by mold design, polymer chemistry and PCR incorporation. It both prevents nesting of parts on conveyor belts for pack out and eliminates dust collecting on the parts' surfaces.

Process

Injection molding for consumer packaging. Letdown for products can range from 0.10% to 0.50% depending on application.

Problem

PCR resins affect the flow properties of plastics and slow down mold release.

Solution

Add +Zero™ to the process which allows the reduction of surface tension in the part and improves cycle time due to faster release of parts.

Liquid Blowing Agents

+Foam™

Foaming agents reduce the densities of molded and extruded thermoplastics, require less resin per part, and decrease a product's carbon footprint. +Foam™ can be metered precisely into the melt flow to achieve the desired level of density reduction and is produced without a heat history, eliminating pre-decomposition concerns. Our +Foam™ options can not only reduce part weight, but other benefits include sink removal and reduced warpage in finished parts . Our product line offers the selection of endothermic, exothermic, or a combination of both agents.

Process

Injection molding for plastics. Letdown for products can range from 0.05% to 1.50% depending on application.

Problem

Large thick walled parts showing sink marks and/or warpage, and any scenario where part weight reduction is needed.

Solution

Add +Foam™ to the color and meter liquid to a precise letdown. The results are large thick walled parts with color and blowing agent to reduce the weight of the part, prevent sink marks, and speed up your cycle.

Flow Modifiers

+Gains™

There are many situations where a slight change in resin dispersion and flow characteristics would benefit the process as well as the product. Along with providing energy savings, +Gains™ can solve processing problems such as poor dispersion, black specks, easier flow properties, better mold release, improved surface characteristics, and reduction in stress along with heating.

Process

Injection molding or extrusion for consumer products. Letdown for products can range from 0.20% to 1.20% depending on application.

Problem

Changing melt flows or use of PCR may create problems with resin flow affecting quality and productivity.

Solution

Add +Gains™ to reduce shear stress, improve flow and allow for better dispersion resulting in better quality and productivity.

Antimicrobial Agents

+Clean™

+Clean™ is an inorganic silver based antimicrobial, which inhibits the growth of gram-positive/gram-negative bacteria, mold and yeast. Untreated plastic products run the risk of microbial growth causing unsightly discoloration, staining, unpleasant odors as well as deterioration and corrosion of manufactured products. +Clean™ improves a product's recyclability and optimizes color retention in both indoor and outdoor environments.

Process

Injection molding or extrusion for plastics. Letdown for products can range from 0.20% to 0.50% depending on application.

Problem

Large thick walled parts have sink marks. Growth of gram-positive / gram negative bacteria which can discolor, stain, and create unwanted odors.

Solution

Add 0.4% of +Clean™ to limit microbial growth. Test results show up to 99.9% reduction of microbial growth on to plastic resin when treated with +Clean™.

Strengthening Agents

+Restore™

+Restore™ improves the quality of regrind (PCR). The change in the physicals can be altered by adding our additive during the plastic processing step, and it works equally well in both extrusion and molding processes. We've experienced improvements to the physicals in P/P, Homo, PP copolymer, and HDPE. When pigments, glass fibers, or other fillers are added, +Restore™ also creates strong bonds between these particles and the resin.

Process

Injection molding, blow molding, and extrusion for plastics (virgin and recycled resins). Letdown for products can range from 0.20% to 1.00% depending on application.

Problem

Reduction in physicals due to processing of resins affected by heat, shear, and cycle time.

Solution

Add .1% to .5%, with or without color, of +Restore™ to improve the overall quality and physicals of the polymer.

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