Bedienungsanleitung Brother PR-670E (Seite 203 von 244) (Englisch)

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APPENDIX

201

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 %.

Creating Beautiful

Embroidery

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Brother PR-670E Seite 203

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