Bedienungsanleitung Brother PR-600C (Seite 183 von 229) (Englisch)

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Appendix ——————————————————————————————————————————————————————————

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164

Creating Beautiful Embroidery

The various precautions concerning the thread, embroidery frames and stabilizers (backings) that must be

observed in order to create beautiful embroidery are described below.

Threads

Embroidery thread can be costly, therefore caring for

it should be a priority. No matter how well a thread

is manufactured, it must be appropriately stored if it

is to sew properly. This is especially true when one

considers the time that lapses between delivery to

the thread user and the moment the thread is actually

used on the embroidery machine. It is important that

embroidery threads be stored in an environment that

is free of damaging agents such as excessive heat,

light or moisture.

Embroidery threads are best stored in an area that is

as clean and dust-free as possible. It is also important

that the storage area be free of smoke, fumes and

gases. Certain gases may cause the thread to yellow.

These fumes originate from such appliances as gas

heaters or from gas or diesel engines.

Direct sunlight is also extremely destructive for

embroidery threads. Boxes of thread should not be

left open and exposed to direct sunlight. If possible,

skylights and windows should be diffused. The best

type of lighting for embroidery thread is tungsten-

filament or fluorescent tubes. It is important to

remember that prolonged exposure to these harmful

sources may also cause the colors of cardboard

boxes and other objects to fade.

Temperature and humidity also pose a threat to

embroidery threads. The ideal conditions are

between 59

°F and 77 °F (or 15 °C and 25 °C).

Humidity should be between 40% and 60%. These

conditions should be kept as constant as possible in

order to prevent mildew from forming. Excessive

temperatures can also cause lubrication problems

that ultimately result in thread breaks. Damp

conditions can affect paper bobbins as the cardboard

will swell and the thread can become oversized. It is

also important to realize that even if the overall

storage conditions are good, there may be “spot

problems” where a thread is exposed to a heat

source or bright lights. Ensuring that thread does not

become damaged requires that stock be frequently

rotated and that threads are not left in the same place

for an extremely long time.

Choice of thread is a major factor in improving

production time. The thread run ability, strength,

consistency and weight all affect output. These

qualities determine how well the machine will sew

and the number of thread breaks during sewing.

Thread breaks have an important influence on

production. Each thread break reduces output by at

least 0.07% a day (7.5 hours), assuming that it takes

20 seconds to rethread a needle. For every reduction

of 14 thread breaks per a day, output can be

improved by more than 1.0 %.

Sapphire.book Page 164 Friday, August 1, 2003 9:12 AM

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