The protective film is also known as the tape, blast protection film is refers to the use of in a special sandblasting jet emery to sculpture art glass protective tape. Sandblast protective film is generally divided into two kinds: one kind is from type oil glue bottom paper; the other is a water gel with a parting at the end of the. The above two are composed of three parts: coated on silicon release paper, glue (glue glue, oil or water) PVC plastic mask.
Introduction the sandblast protective film
Stone sandblast protective film, can be used for marble carving, ceramic tile carving, tombstone engraving etc... Durable, good viscosity
Sandblast protective film is a protective film plastic composite water, mainly used for sandblasting engraving art glass, and other items of surface protection. Water gel that Armin glue series, this gum non-toxic, harmless to the human body, is the green environmental protection type adhesive meets the provisions of the state.
The 2 blast protective film quality requirements
Can be classified into three:
1) first requires unglued. In glass processing is completed, uncovering the sandblasting protective film, surface of processed glass products can not leave a bit of glue and traces, so as to maintain the product clean and beautiful.
2) strong toughness. Refers to the mask can withstand impact jet emery 6---8 kg, otherwise it will breakdown the protective film to break the processed object.
3) have the appropriate viscosity. Means the mask not only obedient, vitreous firmly stick to be protected in the protection, but also can remove protective film smoothly in the sandblasting processing is completed, not because of brittle fracture, torn and unnecessary trouble.
4) can be used in a computer. Computer engraving engraved glass could save time and labour, is a high-tech trend. This requires the back of blasting protect film with a certain thickness of release paper, easy separation. Sandblasting protection film color and specifications can be customized with the user's requirements. Commonly used color white, pale yellow, common specifications are wide and 45, 60, 90 cm, length in meters, according to the requirements of custom-made.
The quality of blast protection film, directly affect the working time and the quality of products, the quality of the following talk about how to test the protective film. The first will be stripping the type test of PVC plastic mask and plastic sandblast protective film on silicon, put the mask back glue is coated side of Jin kneading, make gum and gum tightly glued together, and then pulled away from the attention of glue and adhesive glue wire between by stretch of the longest cannot exceed 0.2 mm (eye look almost no glue wire), so that the possibility of the protective film when using the relatively tiny degumming. Secondly, the thickness inspection of PVC mask is also very important. Because of its relationship to the protective film under blast impact. General flat spraying film in 9 wire should be about, can do flat spraying, painting, carving shallow (carved into the depth less than 1mm). If you need deep carving (carved into the depth of more than 1.5mm), protective film thickness should be increased correspondingly, such as 13 wire, 15 wire, marble sculpture, with the general 17~22 wire. Deep carving when using flat spraying film will otherwise be breakdown, damage to the processed object. Measurement of the thickness of the micrometer can mask. Only by visual, touch is not easy to accurately grasp, because the diameter of hair for 7 wire so imagine feeling sensitivity is difficult to achieve. In addition, the protective film the regular manufacturers have divided the season. Winter membranes are soft toughness, strong adhesion. Summer film slightly hard and brittle, easily spread paving. Finally, suggestions in the spring and autumn season, do not accumulate too much, because the change of seasons, temperature, humidity changes, can affect the quality and blast protection film for example: Winter film summer use, easy come unglued phenomenon; summer film winter will be due to membranous crisp and not firm paste. Sandblasting protection film for exposure, also should not be affected with damp, placed choose ventilated place.