Chem-Trend has developed a broad portfolio of Lusin® brand mold maintenance products for the thermoplastics industry. This portfolio is the result of nearly 70 years of Lusin® heritage, working directly with thermoplastics processors, understanding their challenges, and creating products that address their shop floor challenges.
Our mold maintenance line encompasses:
- Cleaners (including Degreasers)
- Protective Agents (including Rust Preventatives)
Chem-Trend publishes online catalog for its Lusin® mould maintenance products for thermoplastics processing
Minimising Blockades in PET Bottle Manufacturing Lines
PET Packaging Aids for the Food Processing Industry
FAQs: Cleaners and Degreasers
Learn more about mold cleaners, surface cleaners and degreasers for thermoplastics applications and get answers to frequently asked questions.
Looking for answers about lubricants for thermoplastics processing applications? Learn more about frequently asked questions and the answers you need.
FAQs: Lusin® Product Portfolio
Learn more about our Lusin® portfolio of mold maintenance products and get answers to frequently asked question.
FAQs: Protective Agents
Find answers to your frequently asked questions about protective agents for thermoplastics processing applications.
Mold Maintenance Products
Chem-Trend cleaners and degreasers, protective agents and lubricants maintain tools and machinery in the thermoplastics processing industry. Find more information in our digital product catalog of Lusin® Mold Maintenance Products.
Vitamins for Food Packaging
The new Lusin® Lub O 32 F offers competitive advantages to thermoplastic moulders, improving processing efficiencies. As a hybrid material, with proven power as both a release agent and a lubricant, it eliminates the need for multiple products. In the manufacture of PET food packaging, it significantly improves the preform and film production stages.
Lusin® – Professional Products for Thermoplastics Processing
Download our thermoplastic processing product brochure to find out which of our Lusin®Brand release agents will work for your application.
Some engineered polymers have viscosity/MFI which tends to interrupt the passage of air through the mold air venting system. The use of mold cleaners is the best solution to remove the residue polymer in the air venting quickly while in-process, avoiding to the need to remove the mold from the machine to conduct the cleaning.
Most lubricants used at temperatures above 150°C tend to dry out and their lubrication performance stops. The lubrication effect above that temperature is usually a dry lubrication process which is not suitable for small ejector pins. Specific lubricant formulations have been developed to be used at higher temperature applications.
Materials such as PC and ABS are particularly sensitive to stress cracking. Release agents have been developed that can be used in the production of parts made from these materials.
Polyolefines cannot be dissolved, however the main issue in trying to clean the mold is usually not the polymer itself but the additives, pigments and paints. These materials can be removed with a mold cleaner.
Multifunctional sprays offer temporary protection (usually for up to three months) while pure anticorrosion agents provide more extensive protection (12 – 24 months) and should be used when an extended storage period is expected.
Oil-based anticorrosion agents should be removed with a surface cleaner before the production process. Wax-based anticorrosion agents melt at normal mold temperatures and are removed from the mold in the course of regular processing. A separate cleaning procedure for wax based anticorrosion agents is not required.
Lubricants are used in thermoplastic processing mainly for ejector pins, sliders, nozzles and conveyor belts to avoid seizing or blocking of these moving parts.
Low quality or non-specialized lubricants are often not thermally stable; the film created by these lubricants can come off the ejector pins and reach the tips of the pins, where the material may be transferred to the parts and end up as a deposit on the demolded part. Thermally stable, special purpose lubricants have been developed for ejector pin applications that will remain on the ejector pins and will not be transferred during processing.
Oil-based anticorrosion agents can enter tiny and difficult-to-access spaces, such as recesses and undercuts. They dispel moisture and form a temporary protective layer which can last for several months. Wax-based anticorrosion agents provide a stable, long-lasting protective layer and are creep resistant; however they may result in an inclusion of moisture, which is why the surface should be dry before application. Wax-based films tend to protect surfaces for longer than oil-based agents. Wax-based agents form a “dry” film on surfaces, are easier to remove and will not contaminate plastic parts.
Mold cleaners work by dissolving all polymers with the exception of PE and PP while surface cleaners and degreasers work by removing the build-up of materials such as oils, waxes and pastes.
Anticorrosion agents are used wherever metallic surfaces have to be protected from corrosion and oxidation which has a negative influence on the part being produced and destroys the surface of the molds and tooling. Anticorrosion agents are used to keep molds and tools in their best operating condition, even while being kept in storage.
Stained or pigmented anticorrosion agents are used to make the application process easier and less wasteful. The stained or pigmented anticorrosion agents are more visible on the mold surface during the application process and therefore allow for more exacting coverage with less waste.
Wax-based anticorrosion agents save time at the restart of production with a mold because the agent dispenses during the process and manual cleaning of the mold surface cavity is not required. As well, a wax-based agent reduces scrap due to the fast absorption of the agent.
Since thermoplastic based parts produced for the automotive industry generally have to be treated further, it is important to ensure that silicone-free release agents are used. Silicone based release agents will cause the surface of interior parts to seem oily, and silicone is difficult to remove from the plastic surface. The risk of paint shop contamination is also very high and silicone can shut down an automotive manufacturing paint shop fairly easily causing production delays and incurring significant expense.