NPE will provide a lot of news on engineering thermoplastic compounds, custom TPEs, polyolefins for packaging, bioplastics, recycled content compounds, purifiers, 3D printing materials, and a range of innovative additives. #Sustainability#polyolefin#economics

Ascend's Vydyne XHT nylon 66 series is positioned as an alternative to high-cost materials commonly used for high-heat under-hood components such as charge air coolers.

BASF will showcase a prototype of a lightweight TP composite robot developed in cooperation with Shanghai Sinsong Robotics.

Nova will use sustainable packaging, such as this multi-layer bag made of new PE resin and other recent innovations.

Eastman's Treva cellulosic engineering bioplastics have excellent optical properties in electronic displays and excellent flow characteristics when filling thin walls and complex parts.

Asaclean's UF2 purification compound can be quickly converted in blown and cast film extrusion and injection molding.

It is said that Altuglas LED Bloc has changed the face of store signs with its slim, modern shape.

Vertellus' new compatibilizer can be used to produce recycled PET and nylon alloys. Its performance is comparable to that of virgin nylon, but it has a cost advantage.

For PP impact copolymers, Milliken has unique modifiers that can improve impact resistance and melt fluidity, as well as nucleating agents that can maximize stiffness.

Zeroing the target application and providing more efficient processing and in many cases sustainable special formulations are the key themes of the various new materials and additives that will be displayed at NPE2018. Expect to see several custom engineered compounds and TPEs for automotive, electrical/electronics, consumer products, industrial, building/construction, healthcare, and additive manufacturing.

Advanced polyolefins and bioplastics for sustainable flexible and rigid packaging will also receive special attention. In addition, there will be new bioplastics and post-consumer recycling (PCR) engineered compounds for structural applications, automobiles, electronics, and consumer products. Special PVC compounds used in construction and construction, short glass and long glass reinforced PP used in automobiles, as well as some interesting acrylic products and more effective purification compounds will also appear. Looking forward to seeing new 3D printing materials.

Reinforced thermoplastics are the subject of new guidelines for replacing metals in a wide range of applications.

In terms of additives, look for nucleating agents and modifiers for PP impact copolymers, as well as additive masterbatches used to improve the scratch resistance and scratch resistance of PP and TPO filled with cars; impact modification of TPE It is a foaming agent and a compatibilizer suitable for reinforcing nylon and recycling PE/nylon alloy respectively. Stabilizers and modifiers for engineering resins and polyester alloys are also on hand. Look for natural silicate as a flame retardant for wires and cables, new colorants for bioplastics, and advances in black masterbatches that are comparable to the carbon black in glass-filled nylon.

RTP Co. will showcase a series of new applications made from its engineered thermoplastic compounds. RTP engineers will show 7 Steps: Metal to Plastic Conversion Guide, which is a guide for successful metal to plastic part conversion. RTP has extensive expertise in using filled thermoplastic compounds to replace metals in a wide range of applications.

A series of thermoplastic alloys have also been added, their wear resistance is comparable to UHMWPE, but they are specifically designed for injection molding. RTP's wear-resistant alloy series can provide a variety of resin and additive combinations to provide more functions, such as wear resistance and friction, flame retardancy and conductivity.

Lehvoss North America will highlight custom material solutions and their expansion capabilities in custom compounding, additive manufacturing and master batching. The Luvocom 1114 series is based on high-temperature PEKK, designed to provide excellent tribological and thermal properties. It is said that compared with other high-temperature polymers such as PEEK, it has a number of advantages in friction (wear) applications. According to reports, the wear and friction characteristics of the Luvocom 1114 series exhibit low and particularly uniform curves at up to 329 degrees Fahrenheit (165 degrees Celsius) and elevated heat distortion temperatures.

Ascend Performance Materials will launch the latest product of the Vydyne nylon 66 series: XHT series of extremely heat-resistant compounds. It is said that this series represents a phased change in Ascend’s heat-resistant product portfolio. Two grades will be launched for demanding automotive applications and can withstand temperatures of 410°F (210°C) and 446° Prolonged exposure at F (230°C).

Improvements in polymers and thermal stabilization technology make the XHT series an alternative to high-cost materials that are usually designated for applications such as charge air coolers and air ducts for high-heat under-hood components.

Teknor Apex Co. will showcase Chemlon 102HI BK001, its "next generation" nylon 66 compound is said to overcome the cycle time limitations of earlier grades, enabling fasteners and similar parts molders to meet product performance requirements while increasing productivity.

Polymer Resources Ltd. will highlight its engineering resin compounds, including nylon, ABS, PC and blends, PBT, PEI, ASA/PC and PPE/PS. New customized services include a significant expansion of the company's rapid service offerings for compounds, new color matching acceleration services, and additional inventory plans to shorten delivery times.

BASF will showcase parts and components that have successfully cooperated with different customers. For example, BASF has been cooperating with Wabash National Corp., a truck and trailer manufacturer in Lafayette, Indiana, to develop all-plastic composite refrigerated trailers, some of which will be exhibited. Lighting Technologies of Oxford, Michigan will showcase a sustainable lightweight composite pallet. There is also a lightweight robot prototype developed in cooperation with Shanghai Sinsong Robotics.

Arkema will highlight the new applications of its Kynar UHM PVDF fluoropolymer. These include foam PVDF, a breakthrough technology first introduced by the company in 2013, and the recently developed glass-enhanced grades that have opened up new applications that require harder, stronger, and more heat-resistant Fluoropolymers, such as pipes, fittings, valves, nozzles, clamps, fluid connectors, wires, storage tanks, and cable insulation.

PolyOne will focus on its “extremely hot” compounds based on PEEK, PES, PEI, PPS, PSU and PPSU, which is the result of its acquisition of Comptek in Germany in 2016. Properties achieved using these materials include transparency, electrical and/or thermal conductivity, laser marking, and X-ray opacity.

SABIC will showcase a wide range of innovative materials in its petrochemical and specialty plastic product portfolio, covering a wide range of end-use applications in multiple industries, including automotive, construction and construction, consumer products and electronics, healthcare, public transportation, packaging, and personal hygiene . SABIC will also showcase emerging technologies in additive manufacturing and composite materials at its booth. Among them:

• The glass-reinforced Noryl PPE alloy will be used in the water filtration module of Cerafiltec in Saudi Arabia. Noryl's hydrolysis and dimensional stability as well as chemical and heat resistance allowed Cerafiltec to replace the corrosive steel frame with a fully injection molded design.

• Lexan CXT high transparency, high heat resistance, injection moldable PC copolymer provides a balance between high temperature resistance, high fluidity, excellent color stability and high refractive index under extreme molding conditions. These materials are designed for optical applications in the electronics, consumer, industrial, and healthcare industries.

• Lexan DH65011 thermoformed sheet is an opaque, low-gloss PC/ABS, which meets the Federal Railroad Administration (FRA) NFPA 130 fire safety standards for passenger car interior walls, ceilings and seat frames. It provides many decoration customization options.

• Udmax GPE 46-70 tape is the newest member of SABIC's unidirectional fiber-reinforced thermoplastic composite tape product portfolio. It is a glass-filled HDPE that can be used to reinforce industrial components such as oil, gas and water pipes and pressure vessels. Thanks to SABIC's proprietary high-pressure technology, it has high tensile strength, provides one of the highest glass contents today (70% by weight, 46% by volume) combined with the best fiber impregnation.

• Ultem UTF120 PEI 7-μm dielectric film, specially developed for capacitors in high-voltage applications requiring thicker films and larger storage capacity, is the second in the planned high-performance dielectric film product portfolio, with different thicknesses , Can help meet the specific voltage requirements of customers. SABIC launched a 5-micron Ultem UTF120 film last year, claiming to be the only material supplier that offers extruded PEI films of these thicknesses.

SABIC also plans to introduce a number of new technologies, including a series of PP compounds used to improve the feel of car interiors; a series of heat-resistant LNP compounds used in electronic products; two health-care filament grades used in additive manufacturing; and carbon fiber Hollow aircraft seat back.

Kraiburg TPE will use its custom-designed TPE solutions, including new grades and target applications in the consumer, industrial, automotive and medical markets. Product innovations include the newly launched consumer electronics VS/AD/HM series, which provide a silky, satin-smooth surface with high scratch/abrasion resistance, excellent durability and resistance to skin oils, creams and ordinary household washing Resistance to chemicals such as chemicals.

The VS/AD/HM series also has excellent adhesion to polar thermoplastics such as PC, ABS, PC/ABS, PU, ​​ASA, SAN and nylon 6 and 12. Available in natural and black colors, its applications include game console controllers, remote controls and earphones, toys, mobile phone cases, tablets and cosmetic packaging.

Also on display will be Kraiburg's FC/ht series of highly transparent materials, which are suitable for food packaging and sealing, toothbrush handles, detergent boxes and toys. This series of TPE is characterized by excellent adhesion to PP and high fluidity. It has a smooth, non-sticky feel, and due to its high transparency, it is suitable for applications that require customized pigmentation or bright colors.

New PE resins and other recent innovations have enabled multi-layer moisture and oxygen barrier food packaging to transform from a non-recyclable structure to a structure that meets recycling requirements.

Turkey's Elastron is a global manufacturer and marketer of TPE with a history of more than 35 years. It plans to open its North American headquarters in Gainesville, Georgia. Last year, the company announced a partnership with thermoplastic distributor M. Holland Co. to provide alternative sources of TPV and other TPEs to the North American wire/cable market. The two companies have already qualified Elastron TPE before the new 32,000-square-foot Gainsville compound facility commissioned in the third quarter. The plant will produce a variety of thermoplastic elastomers, including TPV, TPO, SBS and SEBS. Elastron USA will serve all major markets, including automotive, industrial, construction, medical, consumer and E/E.

Star Thermoplastics will showcase its expanded StarSoft ultra-transparent TPE series, which now includes a series of ultra-soft gel-like materials. There will also be new enhanced flame-retardant and conductive TPE compounds, as well as an expanded production line for extruded profiles and sheets. PolyOne will launch the low VOC/fog/odor OnFlex LO TPE for automotive interior components.

Nova Chemicals will showcase its Bonfire computer tool for flexible film structure modeling and custom computer modeling tools for bottle caps/closures. For sustainable packaging, new PE resins and other latest innovations have transformed multi-layer moisture and oxygen barrier food packaging from a multi-material, non-recyclable structure to a structure that meets recycling requirements. The physical sample will be displayed.

For e-commerce food packaging, Nova has been working with film processors, packaging manufacturers, and brand owners to develop packaging with the durability (stiffness/toughness balance) and other characteristics that are strictly required by the e-commerce supply chain.

At the same time, ExxonMobil will demonstrate how to create differentiated solutions and will showcase the following products:

In terms of packaging, SABIC will highlight its Flowpact high-fluidity PP impact copolymer for injection molded containers (food and non-food), bottle caps and closures, and household and consumer products. The latest addition is Flowpact FPC70 (MFR 70).

Rigid packaging made of this resin, including applications that can be heat-filled, is said to have higher top load strength than the same product made of the reference material. This leads to better stackability to achieve better transportation and storage economy. FPC70 has advancements in polymer chemistry. Unlike standard PP impact copolymers, FPC70 strikes a balance between high stiffness, impact strength and high HDT. It is said that it can make the wall thinner up to 10% and achieve rapid injection.

Eastman Chemical Company will focus on emerging applications such as office furniture, kitchen cabinets, bathroom toilets, sinks and lids, as well as automotive applications of new engineering bioplastics. Last year, the company launched Treva, an engineering bioplastic that belongs to the cellulose acetate propionate (CAP) family, but has a much higher HDT than standard CAP, making it more dimensionally stable and resistant to creep.

Equally critical is the excellent optical performance of low birefringence in electronic displays, as well as excellent fluidity when filling thin walls and complex shapes. It is said to be suitable for structural applications with good aesthetics—from kitchen walls to home and office furniture—and is durable enough to withstand daily wear and tear. It can also meet the needs of automotive interior designers seeking curved surfaces and shapes. Excellent chemical resistance and resistance to skin oils and sunscreens make it suitable for bathroom toilets and spectacle frames, respectively.

Total Corbion PLA will launch its Luminy PLA product portfolio for the Americas. These include a series of high-temperature, high-performance cross-linked PLA homopolymers-PLLA and PDLA-which target applications that require durability and/or high heat resistance. Visitors will see a variety of commercial applications, including coffee capsules, tea bags, heat-stable bottles, and thermoformed food platters with a "stone-like" slate appearance. The PCR-containing products launched by Wellman Advanced Materials in the past year include:

Techmer PM will highlight its collaboration with plastic recyclers Envision Plastics Industries, sustainability investor Primal Group, and blow molder Classic Containers to overcome the challenge of manufacturing composite materials from 100% recycled marine plastic waste. It will be successfully processed into a personal care bottle with silver metallic pearl finish. Using its proprietary dispersion technology, Techmer PM was able to meet the Primal Group's requirements for the specific color and reflective finish of bottles in its personal care series called ViTA.

Sun Plastech will introduce its new UF2 purification compound for blown and cast film extrusion and injection molding. Like other Asaclean grades, UF2 is said to enable faster conversion, thereby increasing productivity and saving costs. It can be purged through the mold to effectively remove uncarbonized gel and color and carbon pollution, and has excellent compatibility with PE.

Recommended for color and material changes, hot runner cleaning and closing/sealing. Since it does not work through a chemical reaction, there is no soaking time or residence time.

Asaclean will also focus on the N series of chemical purification compounds after its acquisition of Novachem in 2015: NCR Grade (formerly Supernova Regular) is a multifunctional, high-performance chemical purification compound, very suitable for thermoplastic injection molding and extruder color And material changes. NCT grade (formerly Supernova HT) is a chemical purification compound used for high temperature resins such as Ultem, PEEK and LCP, which can be processed at temperatures up to 750 F. NCF grade (formerly Supernova FD) is a high-performance chemical purification compound suitable for color and material changes in the extrusion of thermoplastic films, including flexible and rigid PVC. NCH ​​Grade (previously known as Hybrid 400) is a high-performance compound that is said to have the advantages of mechanical and chemical cleaning agents, and can be used for color and material changes in thermoplastic extrusion and extrusion blow molding.

Shuman Plastics will launch Dyna-Purge F2, described as a "breakthrough technology" whose patented formulation can flow naturally through a variety of processing equipment, including injection molding machines and extruders. The feature of this low-residue scavenger is that one component is formulated to flow to the boundary layer, flushing out the resin. The other component acts as a pressurizing agent, bringing the purge to a stagnation point.

This double-action cleaning can remove materials and impurities in the screw, barrel, mold or mold. In the temperature range of 320-625 F, it is reported to be effective in removing almost all resins. This harmless and FDA-compliant compound is suitable for purging hot runners and other narrow passages.

iD Additives Inc. will launch two new single-dose scavenger compounds in individually packaged packages-expanding its original QuickShots liquid sachet product line. These compounds allow operators to clean the machine by putting the bag into the machine's feed port/hopper, and they can use all resin types on all plastic machines. The new QuickShots HD (heavy duty) incorporates glass particles to provide additional cleaning strength, and SP (particles in bag) includes ultra-small 1/2 ounce versions for laboratory production lines and small batch production.

Teknor Apex will highlight two new flexible PVC compound series. It is said that the gloss of Apex 1523-LG series compounds used for automotive window encapsulation is similar to EPDM rubber belt line seals or glass chutes, enabling manufacturers of PVC encapsulated windows to meet the OEM's demand for closer matching of surfaces. These key exterior parts. These compounds can achieve gloss levels of 3 to 4 without surface treatment of the mold.

Compared to standard PVC window encapsulation compounds in the 9 to 12 gloss range, Apex 1523 compound eliminates the costs associated with tool maintenance and repair to maintain a consistent surface appearance between parts. This series has obtained a number of OEM certifications, such as General Motors' GMW-16084 specification for Chrysler's quarter windows and skylights.

The Apex 2324A2 series of compounds do not contain the ingredients listed in California Proposition 65 and are said to have properties similar to standard compounds used in indoor and outdoor construction products. The eight compounds in the series have a Shore A hardness ranging from 55 to 90. It is said that these opaque grades can be extruded well in a wide temperature range, and in some cases are suitable for co-extrusion with rigid PVC. Applications include gaskets, flexible glass, weather strips, door sweeps and other interior and exterior profiles.

Wellman Advanced Materials will focus on the latest products of its special PP production line for automobiles. For example, Pret A422-G30 is a 30% glass fiber reinforced PP, which has been used for the first time in the United States as a reinforcement panel for car grille openings. It has excellent appearance and performance. Pret A422-LG60 is one of the company's latest long glass PP products and is used in the first dashboard substrate of the new BMW models produced here.

China Shanghai Pratt Composites Co., Ltd. has always been an Asian leader in LFT long-fiber thermoplastic (LFT) composites. Since the acquisition of Wellman, it has expanded to the North American and European markets.

Altuglas, a subsidiary of Arkema, will showcase its new Plexiglas Sylk acrylic, which has a soft, smooth texture and a special combination of diffusion and light transmission, with the largest LED hiding power, suitable for lighting and skylight/lighting applications, and Furniture, privacy partition and POP display.

Altuglas will also highlight the expansion of its Plexiglas ELiT series of acrylics as a new option for larger edge-lit signs while maintaining a slim and modern appearance, and Altuglas LED Bloc, which is changing the thin, modern appearance and independence of store signs The ability to use without the additional components required by the previous signage.

For cars, Altuglas will use plexiglass HT121-LPL, a highly heat-resistant acrylic resin specially formulated for long path length (LPL) applications, such as iconic lighting and thick lenses. In addition to the strong optical properties, chemical resistance and outdoor stability of plexiglass resin, HT121-LPL is said to have greatly improved light transmittance and thermal stability, ensuring that the polymer retains water after injection molding and final use. White transparency.

PolyOne will focus on introducing the new FireCon CPE, a flame-retardant CPE for wires and cables that is said to be resistant to acids, alkalis, oils, fuels, solvents and extreme temperatures.

Milliken will launch two new products for injection-molded PP impact copolymers. One is a unique modifier that has been proven to improve the impact and melt flow of PP while maintaining stiffness and allowing thinning. It is said that the modifier can also make the recycled resin provide physical properties comparable to the original material. Another new product is the latest member of the company's Hyperform HPN nucleating agent, which is said to be specifically designed to maximize the stiffness of PP impact copolymers and achieve thinner specifications.

Lehvoss North America will use Luvobatch PA BA 1001/1002, a new endothermic blowing agent that can reduce the weight of reinforced nylon in all common processing systems.

According to reports, the use of this reagent can reduce the density by up to 30%, maintain mechanical properties with minimal damage, and help avoid sink marks and shrinking cavities. Using this product as a carrier system can prevent delamination of components with high mechanical stress during the addition of PE-based or universal carrier-based masterbatches.

Vertellus will introduce two innovative technologies to promote the greater use of recycled polyester in nylon resins (manufacturing alloys) and enhance the advantages of recycled PET. One is a new type of compatibilizer used in the manufacture of recycled PET and nylon alloys. These new materials have performance characteristics comparable to those of virgin nylon, but have significant cost advantages. The other is a novel, patent-pending technology for upgrading recycled PET and potential bioplastics, such as PLA. This new additive is expected to provide higher transparency and better performance at a lower dosage.

Spain’s Tolsa will showcase the new technological development of its Adins high-performance flame retardant synergist-a series of additives based on the new technology using natural silicate, providing tailor-made performance advantages, and can replace part of the high-load flame retardant The system allows better processability. Adins Clay uses standard wire and cable formulations based on halogen and halogen-free flame retardants (HFFR). According to reports, Adins synergist is very effective in HFFR systems based on EVA/PE and ATH (alumina trihydrate) and/or MGH (magnesium hydroxide).

In the latest development, Tolsa has confirmed the key advantages of other polymers, including LSR and rubber. Adins Clay 80T additives have shown strong effects on smoke and heat release and are sold in rubber substrates and train plastic parts for cable applications. In LSR, Adins Clay 15 has made great progress in train wires and cables. Tolsa is also developing additives for CPE wires and cables. Preliminary studies have shown good flame retardancy and reduced smoke. Tolsa expects to complete its formulation adjustment this year.

Holland Colors highlights two recently launched colorants. The Holcobatch Natural Collection palette is a 100% non-petroleum-based colorant option for bioplastics. These colorants have excellent processing properties and material compatibility in commercial applications. They have been successfully used in polyesters such as PLA and sugarcane-derived PET. Non-polymer carrier systems are also allowed for other bioplastics.

Holcobatch Frost uses lightweight, low-cost, wear-resistant and scratch-resistant materials to reproduce the high-quality appearance and soft texture of frosted glass. Regardless of the direction, it will produce a translucent effect, significantly reducing the gloss. According to reports, the product is ideal for creamy, oily and high-alcohol applications. The dust-free microbead Frost can replace the frost effect of spraying or painting, providing a cool, icy appearance and velvety non-slip texture.

PolyOne will use the "game-changing" OnColor Brilliant metal colorant that simulates paint launched last year. PolyOne will also showcase the new Lactra SX UV blocking additive in the form of a solid masterbatch, which is said to provide a high level of shading and protection for liquid dairy products when added to a single-layer PET bottle.

AESSE Sales & Distribution, the sales, distribution and corporate development department of AESSE Investments, Ltd., was exhibiting at the booth of its sister company SACO AEI Polymers. AESSE S&D currently supplies impact modifiers, coupling agents and flame retardant masterbatches manufactured by SACO in the United States. AESSE S&D also distributes unique products manufactured by offshore supplier partners. At the exhibition, the company will highlight the new technologies of the three Chinese specialty additives and additive masterbatch suppliers that it currently represents in North America. AESSE from JavaChem will showcase new products, such as Javachem HG 600, which are used to improve the scratch resistance and scratch resistance of PP and TPO filled automotive parts.

The newly launched silicone additive masterbatch Javachem GT300 and 805 are produced in situ using basic resins such as PE, PP and TPU, aiming to accelerate the extrusion speed, reduce mold drool and accelerate the molding cycle. In addition, it is said that Javachem PA1066 Black can color glass-filled nylon while improving the aesthetics while avoiding performance degradation caused by the use of carbon black as a coloring agent.

Sundow Polymers Co. introduced CPE impact modifiers for TPE and other resins. AESSE S&D from Fine-Blend, a patented additive supplier for engineering thermoplastics, has three new products: SAG (styrene acrylonitrile glycidyl methacrylate) additives can improve thermal stability and provide expansion for PC, PET, nylon and PLA. chain. SOG additives contain highly reactive epoxy groups, which are reported to improve the toughness and hydrolysis resistance of PET and PBT (including glass-reinforced), and can be used as alloys (such as PC/PBT, PET/PP, and PET/PE) Compatibilizer for recycled polyester. They have also been proven to improve the toughness and thermal properties of PC/ABS. The company also has new EMI special carrier resins for colorants, especially suitable for PC, ABS and their mixtures; and flow modifiers for ABS, FR-ABS and ABS/PVC alloys.

Riverdale Global will use its new GlobalTracker system, a freely available color tracking software, which uses real-time, company-wide data from liquid color metering equipment to automate many of its customers’ purchasing, production management, and compliance functions. It enables remote troubleshooting become possible.

Take a look at the samples of new 3D printing materials and emerging applications at major exhibitions:

• Techmer PM worked with Oak Ridge National Laboratory (ORNL) and BASF to design two new 3D printable engineering thermoplastic compounds, Electrafil PPS 3DP and Electrafil PPSU 3DP.

Carbon fiber reinforced composite materials are specially developed for printing high temperature autoclave tools used in the production of composite parts. They appear in the form of particles and can be used in new particle 3D printers. Successful tests on two large-format additive manufacturing systems (BAAM from Cincinnati and LSAM from Thermwood Corp.) have demonstrated their versatility.

Two new 3D printing tool projects will also be highlighted: Thermwood chose Techmer's Electrafil ABS LT1 3DP to 3D print a huge tool to build a ship's hull on its LSAM system. ORNL printed a trimming and drilling tool using carbon fiber-reinforced Techmer ABS compound, which set a new Guinness World Record for the largest solid object ever made on a 3D printer.

• Lehvoss will focus on the new Luvocom 3F products for filament-based 3D printing processes (FFF, FDM). These products are said to provide improved layer adhesion and enhanced printability. Examples include modified PAEK materials with no warpage and optimized z-direction strength.

• SABIC will use some of its latest filament materials for FFF/FDM 3D printing, including Lexan EXL AMHI240F PC/siloxane copolymer, which are several new filaments with unique performance characteristics that SABIC plans to launch in 2018 one. Two new types of medical thermoplastic filaments will also be unveiled.

• BASF will highlight its partnership with Essentium Materials, a specialty filament manufacturer in the university town of Texas, in the field of plastic 3D printing.

Helping electronics, lighting, and car engines keep cool are some of the new roles of thermoplastics used to replace metals or ceramics.

The degree of shrinkage of the molded part when it cools depends to a large extent on the composition of the material being processed.

In the first three parts of this series, we focused on the effects that lead to smaller molded parts. But there are also some environmental factors that can cause the size of parts to increase over time.

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