Multilayer co-extruded water sack film
A multi-layer co-extrusion, water bag technology, applied in the direction of layered products, synthetic resin layered products, flexible coverings, etc., can solve the problem that the film is difficult to meet the performance requirements, to ensure water safety and anti-permeability performance. The effect of strong and strong bearing capacity
Inactive Publication Date: 2011-10-26
S & H SPECIAL NEW MATERIAL JIANGYIN
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Problems solved by technology
It is difficult for conventional films to meet such performance requirements
Method used
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[0016] see figure 1 , a multi-layer co-extrusion water bag film related to the present invention, the water bag film is a seven-layer co-extrusion film, which is sequentially as follows from top to bottom: the first metallocene polyethylene layer 1, the first linear low-density polyethylene layer Ethylene (LLDPE) layer 2 , first adhesive layer 3 , nylon (PA) layer 4 , second adhesive layer 5 , second linear low density polyethylene (LLDPE) layer 6 and second metallocene polyethylene layer 7 .
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The invention relates to a multilayer co-extruded water sack film, which is characterized in that: the water sack film is a seven-layered co-extruded film, comprising the following layers, from bottom to top: a first metallocene polyethylene layer (1), a first linear low density polyethylene layer (2), a first bonding layer (3), a nylon layer (4), a second bonding layer (5), a second linear low density polyethylene layer (6), and a second metallocene polyethylene layer (7). The multilayer co-extruded water sack film provided by the present invention has advantages of good toughness, good bearing capability, good anti-osmosis performance, no odor, and no pollution to water. With the multilayer co-extruded water sack film provided by the present invention, water quality and safety can be ensured.
Description
technical field [0001] The invention relates to a multi-layer co-extruded water bag film, which is mainly used for the packaging of drinking water. Background technique [0002] Drinking water in bags is an upgraded product of drinking water in barrels. Compared with bottled water, the biggest advantage of bagged water is that it fundamentally eliminates the "secondary pollution" of drinking water. Compared with bottled water, bagged water and bottled water have completely different water outlet principles. Bagged water is discharged by atmospheric pressure, which is positive pressure water, and bottled water is discharged by air-water displacement, which is negative pressure water; bagged water Drinking water is sealed throughout the whole process, without contact with the air from beginning to end, avoiding secondary pollution, while drinking bottled water is completely open for drinking. The essence of the process of drinking from a full bucket of drinking water to a ful...
Claims
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Login to View More IPC IPC(8): B32B27/08B32B27/32B32B27/34B32B7/12B65D85/72B65D65/40
Inventor 韩冬林杜建平王平
Owner S & H SPECIAL NEW MATERIAL JIANGYIN