Introduction to plastic woven bag

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definition

National standard GB/T8946-1998 in the provisions, "the bag flat, on the bag, the next two diagonal delimit 100mm×100mm two boxes, box outside and bag edge line 100mm apart, visual measurement of the box, root weft number, take the average value, count when the point after less than a root, according to a count." The national standard stipulates the density of braiding and the density tolerance. Weaving density depends mainly on the packaging product, at the discretion of the user.

Raw material

Plastic woven noun explanation: woven bag mainly: plastic woven bag is polypropylene (English name pp) as the main raw material, after extrusion, stretching into flat silk, and then by weaving, weaving, bag.

parameter

Commonly used woven cloth density is 36×36 roots /10cm2, 40×40 roots /10cm2, 48×48 roots /10cm2.

1. Braid density tolerance.

Braid density tolerance refers to more than a given standard braid density or a reduction in the number of flat wire roots.

2. Quality of braided cloth per unit area.

The weight per unit area of braided cloth is expressed in grams of square meters, which is an important technical index of braided cloth. The gram weight of square meter mainly depends on the warp and weft density and the thickness of the flat wire. The gram weight of square meter affects the tensile strength and load capacity of the braided cloth. The gram weight of square meter is an important link for the production enterprise to control the cost.

3. Tensile load of braided cloth.

Tensile load is also called tensile strength, tensile strength. For the braided booker to bear the tensile load in two directions, it is called the meridional and zonal tensile load.

4. Width.

Various braiding widths directly affect the bag-making process. For tube cloth, the width is indicated by a fold, and the fold is equal to half the circumference.

Width retraction rate, the width of all woven fabrics after weaving and winding, after rolling cutting, printing, stitching, the width of the bag is slightly less than the width when winding, we call width retraction.

5. Feel.

PP flat silk woven fabric feel thick, quite wide, rough and hard.

HDPE flat silk braids feel soft, lubricated, not dense.

Add calcium masterbatch in PP flat silk material, feel quite wide, PP less HDPE will make it softer.

Flat silk narrow, woven flat, soft feel, flat silk wide, weaving cloth folding silk, feel rough.

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