Plastic door window received wide application in energy-saving construction project, it besides it is good to have heat preservation, adiabatic, air-tightness and anti-corrosive outside waiting for a characteristic, still have a characteristic, adornment sex result is strong. The plasticity as a result of it and welder art, the window that can make breed, different form for the building the design is chosen. In recent years, the development of our country economy, flowing water of person the people's livelihood rises smoothly, people is right the demand of living environment, living quality is higher and higher, right indoor live, working environment asks besides contented use function outside, the surroundings of measurable, beautiful, high quality, living environment, work environment also takes easy seriously more and more rise. Window of model steel door solders in its clear part face often can appear the circumstance of tiny flaw, the beautiful sex of window of this face each other and practical caused very undesirable effect. Combine real work experience, change degree to give priority to from the model of stock, basically should be controlled from the following respects in order to solve the phenomenon of clear character small flaw.

1. chooses an element to estimate distributinging range as far as possible narrower SG5 or SG4 PVC colophony.

2. is reasonable the dosage that the system lubricates in allocating a recipe and scale, the equipment of made optimum company.

3. mixture equipment and squeeze an equipment to want to make sure performance is superior, and should craft of strict batch mixing and push a technology, change position in order to make sure stock has first-rate model.

4. solders to equipment chooses work station side as far as possible or press clamp to have the welder of preheater, solder according to the different and logical choice of different profile craft.

Appropriate of 5. solder cloth is chosen get together 4 fluorine ethylene kind, and solder the cleanness that solder cloth should maintain from beginning to end in the process.

Equipment of 6. clear part should assure the sharp degree of blade and reasonable actuating pressure adequately.

Technology of 7. clear part wants reasonable, clear part of the ability after the role that firm solder gives wants cooling and proper time is advisable, additionally the winter should hold likely temperature range when indoor operation.

The place on put together is narrated, the generation of clear character small flaw is a relatively complex process, the model that its main reason is stock changes rate insufficient, accordingly from raw material choose, recipe design, mix reach squeeze a craft to go up to want forward more the angle that is helpful for model changing will consider. Of course, solder a equipment and craft also are small flaw of influence clear character very main factor.