The production process of plastic bags mainly includes the following points:

淤漿法。在稀釋劑（如己烷）中聚合，是早工業(yè)化也是迄今生產(chǎn)量大的方法。

Slurry method. Polymerization in a diluent (such as hexane) is an early industrial and yet highly productive method.

液相本體法。在70℃和3MPa的條件下，在液體丙烯中聚合。

Liquid phase bulk method. Polymerize in liquid propylene at 70 ℃ and 3MPa.

氣相法。在丙烯呈氣態(tài)條件下聚合。后兩種方法不使用稀釋劑，流程短，能耗低。液相本體法現(xiàn)已顯示出后來居上的優(yōu)勢。

Gas phase method. Polymerization occurs under gaseous conditions of propylene. The latter two methods do not use diluents, have a short process and low energy consumption. The liquid phase bulk method has now shown the advantage of coming from behind.

膠袋根據(jù)制成的膠袋款式不同，可以分為PE平口袋，PE沿線袋，PE自粘袋，PE拉鏈袋，PE鐵骨袋，PE自封袋，PE風琴袋，PE手挽袋

Plastic bags can be divided into PE flat bags, PE along the line bags, PE self-adhesive bags, PE zipper bags, PE iron bone bags, PE self sealing bags, PE organ bags, and PE hand bags according to the different styles of plastic bags made

膠袋的成型特性：

Forming characteristics of plastic bags:

結晶料,吸濕性小,易發(fā)生融體破裂,長期與熱金屬接觸易分解。

Crystalline materials have low hygroscopicity and are prone to melt rupture. They are prone to decomposition in long-term contact with hot metals.

流動性好,但收縮范圍及收縮值大,易發(fā)生縮孔.凹痕,變形。

Good flowability, but with a large shrinkage range and value, it is prone to shrinkage, dents, and deformation.

冷卻速度快,澆注系統(tǒng)及冷卻系統(tǒng)應緩慢散,并注意控制成型溫度.料溫低溫高壓時容易取向,模具溫度低于50度時,塑件不光滑,易產(chǎn)生熔接不良,流痕,90度以上易發(fā)生翹曲變形。

Cooling speed is fast, the pouring system and cooling system should be slowly dispersed, and attention should be paid to controlling the molding temperature. When the material temperature is low and high pressure, it is easy to orient. When the mold temperature is below 50 degrees, the plastic part is not smooth, and it is prone to poor fusion, flow marks, and warping deformation above 90 degrees.

塑料壁厚須均勻,避免缺膠,尖角,以防應力集中。

The plastic wall thickness must be uniform to avoid missing glue and sharp corners to prevent stress concentration.

膠袋薄可做到單面2.5絲厚，市面上一般薄為3絲，大大降低了產(chǎn)品成本。2.5絲的PE封口袋，密封性能仍然很好。使用方便(只需裝入產(chǎn)品鎖上骨條即可)?？啥ㄖ?.5絲到15絲間任意厚度，厚的PE封口袋，兩側牢固，不易爆邊，PE膠袋的袋子透明度好，可重復使用。PE封口袋可印刷打透氣孔(防脹氣),膠袋口可做成紅色(紅邊)或白色(白邊)。數(shù)量準，不少數(shù)，不少厚度。一百個一包，包裝整齊。

The thin plastic bag can achieve a thickness of 2.5 threads on one side, which is generally 3 threads on the market, greatly reducing product costs. The 2.5 wire PE sealing pocket still has good sealing performance. Easy to use (just insert the product lock bone strip). Customizable PE sealed pockets of any thickness between 2.5 and 15 threads, with sturdy sides and non explosive edges. The transparency of the PE bag is good and can be reused. The PE sealing pocket can be printed with air holes (anti inflation), and the plastic bag mouth can be made into red (red edge) or white (white edge). The quantity is accurate, not a few, and there are many thicknesses. Pack one hundred in neat packaging.