Lapol® HDT-P is a patented renewable additive for PLA which increases the heat resistance and toughness of PLA to enable it to be cost effectively processed. Applications include both disposable and durable goods such as, food service, automotive, electronic devices, credit card stock, etc.
Lapol® 108 bioplastic resin ideal for use in high mineral content loading in PLA. It is a cost effective plasticizer for polylactic acid (PLA) and other polymers. Lapol® 108 is predominantly plant derived, is compostable, has good clarity, imparts toughness and compatibilizes starches and other polymers without sacrificing modulus.
Is Lapol® resin cost effective?
Yes, not only does Lapol® 108 costs less than other plasticizers used in PLA on a pound for pound basis, but it is also has been shown to have greater effectiveness in toughness at low loading levels without the extra burden of adding costly compatibilizers. Another major benefit of using Lapol® 108 is its ability to maintain melt strength while heavily loading minerals such as talc or calcium carbonate filler to PLA resins. Up to 45% mineral fillers are easily achieved with Lapol® 108 enabling excellent dispersion of the minerals without sacrificing melt strength. This capability to incorporate high filler content greatly reduces the overall polymer cost.
Lapol® HDT-P provides both high heat resistance and toughness in one polymer and has shown to improve properties at 10% loading levels. Production throughput can be the most costly component of a product, Lapol® HDT-P been demonstrated to run with 40% higher throughput on thermoforming lines than neat PLA; thereby, significantly reducing cost, this coupled with no product sticking waste during high temperature transit and storage, Lapol® HDT-P can be very cost effective.
Are Lapol® resins compostable?
Yes, both Lapol HDT-P and Lapol® 108 resins are compostable.
How much toughness can I expect with Lapol® resin?
With as little as 5%-10% loading from a 50%-75% increase in toughness can be achieved in PLA without sacrificing modulus form Lapol® 108 resin. Typically, petroleum-based aromatic/aliphatic copolyesters cause a significant decrease in modulus (stiffness) when added to PLA, this does not occur with Lapol® 108.
Lapol® HDT-P has been shown to increase the toughness of PLA 3001D of 60%-70%.
Does using Lapol® resins increase haze in a PLA sheet?
Lapol® resins have minimal haze when added to PLA.
Is Lapol® resin compatible with PLA?
Yes, Lapol® resins are specifically designed with like polymer chemistry for PLA; Lapol® bioplastic resins are fully miscible with PLA up to 20% (although we recommend only adding 5%- 10%) and does not require any additional compatibilizers to effectively blend with PLA.
Is Lapol® 108 resin compatible with polyhyroxyalkoanates (PHA)?
Yes, Lapol® 108 resin is compatible with PHA and does not require additional compatibilizers.
Is Lapol® resin made from renewable resources?
Yes, both Lapol® HDT-P and 108 grade resin are made from predominantly renewable resources.
How is Lapol® resin added to the compounder and converting equipment?
Lapol® HDT-P resin is typical white pellet and can be added to the compounder with standard feeding equipment or pre-blended with the PLA resin. The HDT-P grade can also be added directly into the injection molder or thermoformer with the PLA without the need for compounding. Lapol HDT-P biopolymer resin should be dried to <700 ppm moisture content in a standard polymer drier used in polyester processing. See the processing guide for specific guidelines.
Lapol® 108 resin is supplied as a pre-compounded as a masterbatch concentrate in PLA and can be charged into standard compounder feeding systems. Alternatively, it is manufactured in both 5-gallon pails and 55-gallon drums as a solid resin.
When not using a masterbatch concentrate in PLA, Lapol® 108 is melted in a standard drum melt pump and metered into the compounder. Lapol® 108 is added "downstream" from the feed throat of the base polymer for proper mixing. Most users add it in a side stuffer or in an air vent; it is imperative that there be a mixing section in the compounder after the addition of Lapol® 108 to ensure a homogeneous compound. Lapol can assist in specifying and acquiring a melt pump for accurate feeding of the resin in to the compounder. Please download the Getting Started Processing guide for more information.
Does Lapol® resin need to be dried?
Lapol® HDT-P resin is shipped in foil lined bags and it pre-dried prior to shipment. Whenever PLA is processed, users should ensure that both the PLA and the Lapol® HDT-P resins are both below 700 PPM .
When Lapol® 108 solid resin is supplied through a drum melter to the compounder it does not need to be dried, nevertheless the container should be sealed shut and protected from high humidity and moisture. However, when Lapol® 108 resin is supplied as a concentrated masterbatch with PLA as its base polymer, it should be dried and processed just like any other PLA to less than 700 PPM to maintain properties.
Is Lapol® resin FDA compliant?
Yes, Lapol® HDT-P is FDA compliant. Lapol® 108 resin meets the US Food and Drug Administrations regulations for food contact safety 21 CFR 175.300, additional regulations are under going regulatory approvals for a broader range of compliance.
How much Lapol® resin should I add to my PLA?
Depending upon the desired properties, the loading is typically between 10% - 20% for Lapol® HDT-P and 5%-10% for a Lapol® 108 of the PLA component only, not including any other fillers or admixtures. Adding more Lapol® 108 will not improve processing and materials properties and will lead to diminishing returns.
Does Lapol® 108 increase the heat deflection temperature of PLA?
No, there are two grades of Lapol, Lapol® 108 and Lapol® HDT-P. Lapol® 108 is used for increasing toughness and melt viscostity of highly loaded mineral content in PLA, Lapol® HDT-P grade is used for increasing the heat deflection temperature of PLA to up to 150° C, but Lapol® HDT-P will also increase toughness of the end product, so it solves both the low heat tolerance and brittleness shortcomings of PLA.
Lapol® HDT-P is now available for production and evaluation. If you are interested in the Lapol® HDT grade, please contact us at firstname.lastname@example.org.