CN202846994U

CN202846994U - Three-layer co-extruded nylon film

Info

Publication number: CN202846994U
Application number: CN201220467309.8U
Authority: CN
Inventors: 赵世龙; 刘仲民
Original assignee: SHANDONG SHOUGUANG LONGXING AGRICULTURAL FILM CO Ltd
Current assignee: Shandong Longxing Plastic Film Technology Co ltd
Priority date: 2012-09-14
Filing date: 2012-09-14
Publication date: 2013-04-03
Anticipated expiration: 2022-09-14

Abstract

The utility model relates to a three-layer co-extruded nylon film which comprising an outer layer, a middle layer and an inner layer, wherein the outer layer, the middle layer and the inner layer are PA (Polyamide) layers or PE (Polyethylene) and adhesive layers; and the PA layers and, the PE and adhesive layers are arrayed at intervals. The outer layer is the PA layer, the middle layer is the PE and adhesive layer, and the inner layer is the PA layer; or the outer layer is the PE and adhesive layer, the middle layer is the PA layer, and the inner layer is the PE and adhesive layer, wherein the content of the PE in the PE and adhesive layer is 50-70%, and the content of the adhesive is 30-50%. Because of the added PA layer, the anti-aging strength and the tensile strength are improved, and the service life is prolonged; and the PA layer has good barrier property, so that an anti-dropping agent and an antifogging agent can be effectively prevented from migrating towards the outer layer.

Description

A kind of three-layer co-extruded nylon membrane

Technical field

The utility model relates to a kind of nylon membrane, is applicable to agricultural booth, soil-fumigating, vacuum perfusion process vacuum bag, specifically, relates to a kind of three-layer co-extruded nylon membrane.

Background technology

Domestic farm plastic greenhouse film be middle and later periods the 1950's begin to develop, Development and Production, having researched and developed at present novel plastic sheeting for farm use more than 10 plants, mainly contain ageing-resistant, long-lived, drip is ageing-resistant, drip insulation is ageing-resistant, fog dispersal type drip, three-layer co-extruded complex function, PE is multi-functional, PE reaches with three layers of complex function of EVA, enduring hardships of PVC drip and prevents dust, PE turns light, PVC turns the films such as light, these plastic sheeting for farm uses generally adopt PE and EVA to make, and useful life is 1 year.Domestic plastic sheeting for farm use thickness is 0.06mm～0.08mm, 0.1mm～0.12mm etc., and the application of these novel functional membranes in the vegetation cultivation obtained good result, obtains larger economic benefit and social benefit.Agro-film Industry " 12 " planning is pointed out: vigorously support high-effect, customizations, function and life-span synchronously and ambient influnence functional plastic sheeting for farm use production and apply.If the normal film 60% changes the functional film of life-span more than 1 year into, to reduce by 300,000 tons consumption national every year, if change the functional film of life-span more than 2 years into, then consumption will reduce 500,000 tons, be equivalent to a newly-built large-scale ethylene plant, the annual petroleum resources of saving and fund are with hundreds of millions of.

In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem, and the plastic sheeting for farm use ageing resistance that adopts PE and EVA to make is poor, hot strength is low, service life is short, barrier is poor.

The utility model content

The technical problems to be solved in the utility model is for above deficiency, a kind of three-layer co-extruded nylon membrane is provided, overcome the defective that ageing resistance is poor in the prior art, hot strength is low, service life is short, barrier is poor, after adopting nylon membrane of the present utility model, have anti-aging, hot strength is high, the advantage of long service life, good barrier property.

For solving above technical problem, the utility model is by the following technical solutions: a kind of three-layer co-extruded nylon membrane, be comprised of skin, middle level and internal layer, it is characterized in that: described skin, middle level, internal layer are PA layer or PE and adhesive phase, and PA layer, PE and adhesive phase are spaced.

A kind of prioritization scheme, described skin are the PA layer, and the middle level is PE and adhesive phase, and internal layer is the PA layer.

Another kind of prioritization scheme, described skin is PE and adhesive phase, and the middle level is the PA layer, and internal layer is PE and adhesive phase.

After the utility model adopts above technical scheme, compared with prior art, have the following advantages: by skin, middle level and internal layer form, skin is the PA layer, the middle level is PE and adhesive phase, internal layer is the PA layer, or skin is PE and adhesive phase, and the middle level is the PA layer, and internal layer is PE and adhesive phase, wherein the content of PE is 50%～70% in PE and the adhesive phase, the content of adhesive is 30%～50%, owing to added the PA layer, has improved anti-aging intensity and hot strength, increased service life, and the PA layer has preferably barrier property, can effectively intercept drip agent, antifogging agent moves to skin.

Below in conjunction with drawings and Examples the utility model is elaborated.

Description of drawings

Accompanying drawing 1 is the structural representation of three-layer co-extruded nylon membrane among the utility model embodiment;

Among the figure,

1-is outer, 2-middle level, 3-internal layer.

The specific embodiment

Embodiment, as shown in Figure 1, a kind of three-layer co-extruded nylon membrane is comprised of skin 1, middle level 2 and internal layer 3, and skin 1, middle level 2, internal layer 3 are PA layer or PE and adhesive phase, and PA layer, PE and adhesive phase are spaced.

Skin is the PA layer, and the middle level is PE and adhesive phase, and internal layer is the PA layer, and wherein the content of PE is 50%～70% in PE and the adhesive phase, and the content of adhesive is 30%～50%, and the content of selecting PE in the present embodiment is 50%, and the content of adhesive is 50%.

Skin is PE and adhesive phase, and the middle level is the PA layer, and internal layer is PE and adhesive phase, and wherein the content of PE is 50%～70% in PE and the adhesive phase, and the content of adhesive is 30%～50%, and the content of selecting PE in the present embodiment is 50%, and the content of adhesive is 50%.

Owing to added the PA layer in the utility model, improve anti-aging intensity and hot strength, increased service life, and the PA layer has preferably barrier property, can effectively intercept drip agent, antifogging agent moves to skin, nylon membrane of the present utility model can be applicable to agricultural booth, soil-fumigating sterilization, also be applicable as vacuum perfusion process vacuum bag in wind power generation blade, yacht, the EMUs process, thereby can solve at present the situation that mainly relies on import at China's soil-fumigating film and vacuum perfusion process with vacuum bag.

The above is giving an example of the utility model preferred forms, and the part of wherein not addressing in detail is those of ordinary skills' common practise.Protection domain of the present utility model is as the criterion with the content of claim, and any equivalent transformation that carries out based on technology enlightenment of the present utility model is also within protection domain of the present utility model.

Claims

1. a three-layer co-extruded nylon membrane is comprised of outer (1), middle level (2) and internal layer (3), and it is characterized in that: described skin (1) is PA layer or PE and adhesive phase;

Described middle level (2) is PA layer or PE and adhesive phase;

Described internal layer (3) is PA layer or PE and adhesive phase;

Described PA layer, PE and adhesive phase are spaced.

2. a kind of three-layer co-extruded nylon membrane as claimed in claim 1, it is characterized in that: described skin (1) is the PA layer, and middle level (2) are PE and adhesive phase, and internal layer (3) is the PA layer.

3. a kind of three-layer co-extruded nylon membrane as claimed in claim 1, it is characterized in that: described skin (1) is PE and adhesive phase, and middle level (2) are the PA layer, and internal layer (3) is PE and adhesive phase.