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Down blow type membrane foam internal spray coating functional liquid coating technology and device

A functional liquid, down-blowing technology, which is applied to devices and coatings that apply liquid to the surface. It can solve the problems of reduced functionality and service life, poor transparency, poor adhesion, etc., and prolong the functional effect of life. and service life, simple and easy modification, and the effect of strengthening the cooling effect

Active Publication Date: 2004-12-22
SHANDONG QINGTIAN PLASTIC IND
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Problems solved by technology

Although this process achieves uniform spraying on the surface of the film, the physical and chemical properties of the functional agent and the polyethylene film are quite different. The distribution of active agents is extremely uneven, and the adhesion is poor, which reduces its functionality and service life, and its transparency is very poor. It cannot be popularized and applied, and it cannot meet the needs of large-scale production and agricultural greenhouse film production.

Method used

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  • Down blow type membrane foam internal spray coating functional liquid coating technology and device

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Embodiment Construction

[0013] the present invention as figure 1 installed as shown.

[0014] When the down-blowing blow molding machine starts to work, after the head body 3 blows out the film bubble 5, the next step of winding work is carried out through the lower traction roller 8 according to the existing conventional operation mode. At this time, the functional liquid 7 passes through the medium pumping device The connected medium conduit 1 is injected into the film bubble 5, and the inner wall of the film bubble is sprayed and coated by the spray head 6. In order to obtain a uniform coating on the inner wall of the film bubble, a ring can be formed on the head body 3 Multiple groups of spray heads 6 are arranged in a shape, and one set or more than one set of the functional liquid output pipe 11 and the suction pump 9 provided therefor can be set according to actual needs. When the liquid level of the functional liquid 7 in the film bubble 5 reaches a certain amount, the suction pump 9 provide...

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Abstract

A blowing down type technology and apparatus for spraying function liquid onto inner surface of film bulb features that a blowing-down head can blowa film bulb which is then wound on a reel,andthe function liquid is directly filled in the film bulb for coatingit on the inner surface of film bulb. Its advantages are high adhesion, uniformity and transparency, and long service life.

Description

technical field [0001] The invention belongs to an object surface coating process, in particular to a down-blown film bubble internal spraying functional liquid coating process and device. Background technique [0002] At present, the processing of functional films at home and abroad adopts the production process of multi-layer co-extrusion blow molding units, that is, the masterbatch containing functional substances and polyethylene masterbatch are combined into a multilayer film at a high temperature of about 200 ° C. However, the functional substances are easy to decompose and volatilize at high temperature, and the functional substances contained in the film are not easy to release, which greatly reduces the functionality of the film. [0003] In the 1990s, the agricultural mulch coating process appeared. The functional agent was sprayed evenly and simply on the mulch through a spray device. Although this process achieves uniform spraying on the surface of the film, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C7/02B05D1/02B29C49/00
Inventor 马之清
Owner SHANDONG QINGTIAN PLASTIC IND
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