Zero defect product

WYSIWYG what you see is what you get ZDP zero defect product... 

Scorch is a property of the rubber compound that relates to the proportion of available cross-links that have been used up at any particular point in the process. When 5% of available cross-links have been completed, the rubber is said to be 100% scorched. If the rubber has reached this level before the mould is completely filled, no satisfactory bond is possible. Experimental work has shown that for consistent zero-defect production, the scorch level should not exceed 20% (1% cross-linked) before the rubber has been fully consolidated against the prepared surface to which it is to be bonded. The derivation for cross-link density from a cure rheometer trace is shown in Fig. 1. 

A zero-defect production of injection-molded parts is guaranteed when internal and external quality controls work properly together. In this case a QA protocol can be sent to the customer. All ranges of protection are specially significant. The automated quality control for injection molding is illustrated in the following example. 

Once a product s purpose and service requirements have been established, its successful design and manufacture to meet zero-defects production requires knowledge of 1) the plastic materials from which it is to be made, their nature, and the ways in which processing may affect their properties 2) the processing methods available for its manufacture and 3) how to evaluate its properties and apply effective quality control. 

Perhaps the most exciting promise of PAC is to make process lines so efficient and so well-controlled that zero-defect products are released together with a decrease in effluent. Imagine the good will such efficient plants might generate in the community. 

Neither statistical methods, which are able to determine dimensions and weight of a molded part in advance with the help of a design of experiment (DOE), nor control methods, which fully automatically readjust and optimize the process, are able to prevent rejects. This means that a so-called zero-defect production (0 ppm) is desirable but impossible to achieve in practice. The goal is not to produce zero defects but to deliver. For this reason, there is no way around monitoring the process. 

Quality system regulation The past good manufacturing practice (GMP) and process validation (PV) was renamed to quality system regulation (QSR). It is important for the medical device industry (that uses an extensive amount of plastics) and also in other product industries where they want to follow strict processing procedures. It sets up an important procedure for many plastic fabricators to consider that targets to ensure meeting zero defects. 

It is clear that the aim of pharmaceutical research is to achieve zero defects and zero batch rejections, and this can be verified by process validation. One must bear in mind that exhaustive finished testing of product is not a substitute for in-process controls and process validation. 

In many ways, near-IR spectroscopy is an ideal method for pharmaceutical process control, particularly for the analysis of intact dosage forms. As production costs, including analytical expenses, continue to increase, the advantages of near-IR spectroscopy will become more attractive. With near-IR spectroscopy, the pharmaceutical industry will move one step closer to zero-defect quality control, making the costs associated with the method s development well spent. 

It is an accepted fact that Japanese products are of highest quality, but it is not as widely understood that Japanese companies do not generally have what we identify as a quality control department -- their quality control is built into every step of the operation as a part of their "zero defect" program. 

This practical and comprehensive book reviews the plastics industry virtually from A to Z through its more than 25,000 entries. Its concise entries cover the basic issues (such as plastic s melt flow behavior during processing) as well as advanced issues (such as the design and fabrication of products that are targeted to meet performance and cost requirements with zero defects). 

Eliminate slogans, exhortations, and targets for the work force asking for zero defects and new levels of productivity. Such exhortations only create adversarial relationships, as the bulk of the causes of low quality and low productivity belong to the system and thus lie beyond the power of the work force. 

Although this type of equipment is expensive initially, it results in improved production rates and aids targets of zero defective parts. There are a variety of manufacturers and systems from which to choose. All the sys-... 

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