নিডেলের মাধ্যমে কোন কোন ডিফেক্ট হয়? Which defects create by sewing needle?
সেলাই সুচ:
সূঁচটি থ্রেড দিয়ে ফ্যাব্রিক সেলাইয়ের জন্য ব্যবহৃত হয়। সেলাই মেশিনে সেলাই সূঁচের গতি যান্ত্রিক উপায়ে নিয়ন্ত্রণ করা হয়। সেলাইয়ের সময়, সূঁচটি ফ্যাব্রিকগুলিতে যেভাবে প্রবেশ করে, এটি বীরের শক্তির সাথে, সীমের উপস্থিতি এবং সীমের স্বাভাবিক পরিধানযোগ্য জীবনের সাথে সম্পর্কযুক্ত।
সেলাই মেশিনের সুইয়ের কাজগুলি নিম্নরূপ:
1. ফ্যাব্রিক ক্ষতি না করে, ফ্যাব্রিক একটি গর্ত তৈরি করা হয়, যার মাধ্যমে সুই থ্রেড প্রবেশ করা হয়।
২. ফ্যাব্রিকের মধ্যে সূঁচের সুঁইয়ের সুতোর প্রবেশের পরে, সূঁচের সুতোর একটি লুপ তৈরি করতে যা বববিন কেস বা লুপারের হুক দ্বারা নেওয়া হবে।
3. লকস্টিচ বাদে অন্য মেশিনে, লুপের তৈরি লুপের মাধ্যমে সুই থ্রেডটি পাস করতে।
নিডেলের প্রতিটি পার্টস এর নাম ও সেগুলোর কাজ সম্পর্কে আলোচনা করা হয়েছে !!!
Sewing Needle:
The functions of the needle of a sewing machine are as follows:
1. Without damaging the fabric, a hole is made in the fabric, through which needle thread is entered.
2. After entering the needle thread with needle into the fabric, to make a loop of the needle thread which will be picked up by the hook of the bobbin case or the looper.
3. In other machines except the lockstitch, to pass the needle thread through the loop made by the looper.
1. Butt: The very first portion or base of a needle which is made in a specific shape, by which the needle can be attached with the needle bar easily and fairly.
2. Shank: This is the surface or part of a needle which is attached in the needle bar. A shank may be cylindrical or there may have a flat end in one side. This is thicker and stronger than the remaining part of the needle and it works as a support for the needle.
3. Shoulder: The portion in between shank and blades is called the shoulder. When a needle penetrates into the fabric and reaches to its lowest bottom destination, then the shoulder also goes into the fabric, as a result, it helps to increase the hole made by the head of the needle. When the needle comes out of the fabric with needle thread, then there is less friction between needle and fabric due to the bigger hole, besides, the shoulder helps to strengthen the blade of the needle.
4. Blade: The long portion of the needle extended from the eye to the shoulder is called the blade. This is the longest portion of a needle and most frictions with fabrics happen here.
5. Long groove: There is a long and narrow slot in the blade extended from the shoulder to the eye of the needle which is called the long groove. When the needle penetrating into fabric goes downward with needle thread, then the needle thread stays at the gap of the long groove, as a result it helps to become comparatively less friction of thread and needle with fabric.
6. Short groove: The short groove is placed at the same side at which the hook or the looper is placed in the needle. This is extended from a little above the needle eye to the bottom and it helps in the formation of needle thread loop.
7. Needle Eye: There is a hole at the front of the needle which is called the eye. It is extended from long groove to the short groove. The inside shape of the needle is very important, especially it is related with being damaging or not of the needle thread when the needle penetrates into the fabric and it is also related with the correct loop formation of the needle thread.
8. Scarf: Just a little above the needle eye, there is a small slot which is called the scarf. This scarf helps for setting the looper or hook closer with the needle. As a result, the hook or looper can easily hold the needle thread loop.
9. Point: The part extended from the needle eye to the tip of the needle is called the point. The needle point is made in such a way so that no harm is caused to the fabric during its penetration. If it is not determined properly that which needle will be used for which fabric, then during sewing of the fabric it (fabric) may be damaged by the needle.
10. Tip: The last end of the needle point is called the tip. Tip is related with the efficiency of penetrating of fabric with needle
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