This presentation discusses the different types of sheds used in weaving machines. A shed is the temporary separation of upper and lower warp yarns through which the weft is woven. There are several types of sheds including closed, bottom closed, center closed, open, and semi-open. For a good shed it should be as small as possible, the healds should be at a right angle to the warp threads, perfect leveling of healds is needed, and the heald frames must have smooth movement. The presentation was given by MD. Jubair Ahmed Rubel with identification number 141-23-3780 from section A.

1. Welcome to MY
presentation
Topic : Types of Shed in weaving machine

2. NAME : MD. JUBAIR AHMED RUBEL
ID :- 141-23-3780
SEC:- A

3. SHED:
 In weaving shed is the temporary
separation between upper and lower warp
yarns through which the weft is woven

4. CONDITION FOR GOOD SHED:
 It should be as small as possible
 Heald are to be placed at right angle to warp thread
 Perfect leveling of healds are to be obtained
 The velocity of the upward and downward movements of
the healds must be variable to correspond, as far as possible
with the tension upon the warp
 Smooth movement of the heald frames

5. TYPES OF SHED:
SHED
CLOSED
SHED
BOTTOM
CLOSED
SHED
CENTRE
CLOSED
SHED
OPEN
SHED
SEMI OPEN
SHED
OPEN
SHED

6.  A bottom line of warp
 B rising and falling line
 C an arrow showing the space passed through

7. Thanks to all