We know our customers have questions, so we have compiled a list of the questions we get asked most frequently.
What is durometer?
Durometer is a measurement of the material's hardness and is measured with a sharp point being pressed into the material where the reading is noted on a dial gauge. The most common reading is based on a 15-second delay. Common scales are Shore A for flexible materials and Shore D for rigid compounds.
What is a dual durometer or co-extrusion?
Dual durometer, or co-extrusion, is the fusion of two or more materials of varying physical properties into a single extruded piece. An example would be a rigid part with flexible fingers that could be used as a gasket or cushion. Typically, the two materials are from the same family of polymers to ensure compatibility for adequate adhesion; however, in some instances dissimilar materials can be extruded together, providing adhesion can be obtained.
Why should I use vinyl (PVC)?
Vinyl compounds range from soft (low durometer) to very rigid providing the ability to meet most plastic extrusion profile requirements. With the addition of color concentrates, almost any color is achievable ranging from metallics to florescent. The compounds are inherently flame resistant with good chemical resistance. Weatherability can be achieved with the addition of ultraviolet inhibitors.
What quality control procedures are followed?
Each product shipment is documented for compliance to strictest quality control guidelines, in addition to the nuances of the specific production run. Quality control is the primary responsibility of the production operator and is monitored and recorded by Quality Assurance personnel on an hourly basis. While SFR has not yet obtained ISO certification, we are routinely audited by major corporations for compliance to ISO standards and other recognized quality systems. The consistently high level of product quality is considered to be the primary reason for our significant growth in the last decade.
Which industries do you serve?
As a manufacturer of custom plastic extrusion profiles, we serve many different industries. We work closely with our customers to provide the highest quality thermoplastic extrusions, whether for electronics, furniture, office furnishings, store fixtures, POP displays, industrial or one of several other served markets.
What is the average tool cost for profile extrusion die?
Tool costs are included in the Engineering Development Charge, which consists of a portion of the total costs associated with developing a new product. Other items considered are the actual labor and material costs to develop "production ready" tooling. Consequently, there are many factors involved that prohibit a direct answer to the question. However, depending on the part complexity and raw materials, one could estimate the costs starting at less than $1,000.
What is the typical minimum run quantity?
This is a prime example of "it depends." Due to varying set-up costs and run efficiencies, we attempt to restrict the minimum production quantity to 2,500 lineal feet. However, this quantity may vary depending on the projected costs, which are significantly higher for shorter run lengths. We are pleased to provide quotations for various run length and release quantities upon request.
What is a vacuum sizer (calibrator)?
Vacuum sizers, sometimes called vacuum calibrators, are an integral part of many plastic extrusion set-ups and specific to each the custom profile. The sizer determines the final part dimensions by using a vacuum to shape the molten plastic during the cooling process. While the initial cost may seem high, the sizer ensures the same size every time.
Which material is best?
The goal in material selection is to determine which balance of physical properties best match the end use requirements of your plastic extrusion profile. One must consider many attributes such as environmental, use temperature, chemical exposure, flammability requirements, impact and the overall part function. Our development team will work with you to select the optimum balance of material properties, function and cost.
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