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| No.13630797
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Information Name: | Flour plastic bags | plastic bags | packaging with the blessing |
Published: | 2015-02-11 |
Validity: | 0 |
Specifications: | Limited |
Quantity: | |
Price Description: | |
Detailed Product Description: | a draw ratio is extruded film extrusion speed traction speed ratio of flour and plastic bags from the film opening, it is not only used for flat film, but also for tubular film, by controlling the draw ratio, the film is slightly oriented in the pulling direction effect. traction ratio control is the only effective means of controlling the thickness of extruded film is cooled. Because die gap of a substantially fixed extruder, adjusting the amount of supply of small plastic bags, in general, kept in a drawing ratio 4-8 is appropriate. b. blow-up ratio, when blown, tubular film blowing bubble diameter and the diameter of the original die than chemical plastic bags, called the blow-up ratio. Obviously there is no flat film blow up ratio problem. In theory, the blow-up ratio is larger, the film is stretched transversely oriented role better, tensile strength, the better, but actually produced in the not too high, so as not to cause a serpentine swing down uniformity of thickness not etc., wrinkled, etc. In general, the blow up ratio is controlled between 2.0 to 3.5, the maximum should be no more than eight. c. draft ratio, when the flat wire drawing, wire segmentation unit length (blank wire) of the retractor extending the length of a multiple of, or described as drawing (b retractor) speed and drawing (a pull) the ratio of the speed of draw ratio. Biansi production draft ratio is the most important process indicators. draft ratio, also known as draw ratio, the stretching ratio. Biansi drawing is uniaxially stretched at a temperature below the melting point performed, the stretching process is the orientation process, so as obtain a flat wire of high strength and other physical and mechanical properties. In general, the draft ratio control Biansi 4-7 times, special needs, involving 11 times more than Kodak. d. retraction ratio refers to the ratio of the flat wire pull-out speed and traction velocity. From the point of view of production process needs, pull rate is lower than the traction speed, to edge wire reheat setting a retraction, the inner Biansi stress relief, get stronger and excellent tensile elongation recovery ratio, also known as stereotypes than under normal circumstances, recovery ratio In between 0.96-0.99 plastic bags (no Fumo bags) Its production process is: Woven by printing, cutting, sewing, become woven. Different based on the equipment used, can be cut after printing, can also be printed after the first cut. Automatic cutting sewing continuous complete printing, cutting, sewing and other processes can also be made of the valve pockets, put the bottom bags, etc., for weaving can be bonded after raphe bag. Plastic woven bag making process indicators primarily shape tolerances, pull-off force after the end of the seam and the seam direction, clarity of printing inks and printing other parts of the cleanliness, layout position accuracy, suture stitch woven plastic bag, pitch, and suture needles off, break and other shortcomings of the requirements of flour plastic bags | plastic bags | packaging with the blessing with the blessing Packing Co., Qingdao. Packing Co., Ltd. Qingdao with the blessing (www.qdtongfu.com) strong, credible, in Qingdao, Shandong plastic bags and other industries has accumulated a large number of loyal customers. The company better work attitude and continuous improvement, with the blessing of innovative ideas will lead into the brilliant packaging and you work for a better future! |
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Copyright © GuangDong ICP No. 10089450, Packing Co., Ltd. Qingdao with the blessing All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
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You are the 28558 visitor
Copyright © GuangDong ICP No. 10089450, Packing Co., Ltd. Qingdao with the blessing All rights reserved.
Technical support: ShenZhen AllWays Technology Development Co., Ltd.
AllSources Network's Disclaimer: The legitimacy of the enterprise information does not undertake any guarantee responsibility