The glue glue is glued on both sides of the back and back of the book block. After the book block is milled back and grooved, the hot melt glue can bind the book page to the book page. The binding between the book block and the cover becomes a Book. The adhesive has the difference between adhesive and side adhesive. Their fluidity, opening time, and curing time are all different. The adhesive temperature should be controlled at 170-180Â°C, and the thickness of the adhesive glue is generally controlled at 0.62mm. The layers should be uniform and thin on the backsheet can affect the bond strength. Thickness on the backsheet can increase the cost. The length of the adhesive should be slightly shorter than the cover size of 12mm. If it is too long, it will cause the remaining glue to accumulate mechanical transmission components, causing it to malfunction. If it is too short, it will cause the back of the book and the feet to become empty, which will affect the quality. When the upper side glue between the book block and the cover is used, the side glue must be a hot melt adhesive with good flowability, long open time and curing time, and high bonding strength. The temperature of the side glue is controlled at about 160-180Â°C. The width of the glue is generally about 46mm, and the fuller the glue on the side, the better, and requires a firm bond in order to ensure the quality of the book and the cutting requirements. Do not use gum as a side glue, otherwise it will make the book cover on the cover line, affecting the quality of the product.
PVC Transparent Soft Glass Tablecloth,the surface is smooth, no cracks, no bubbles, uniform color, heat resistance, cold resistance, anti-aging, heavy pressure resistance, strong acid and alkali resistance, good light transmission and long service life. To some extent, it can be used instead of glass, but its superiority is unmatched by glass. In particular, the impact resistance and tensile properties of soft glass. Anti-light, no deformation, no break, no hard, high elasticity. Soft texture and easy to write. Heat-resistant 100 Â° C, cold-resistant -30 Â° C, resistant to strong acid, alkali, heavy pressure, help to improve the efficiency of desktop work, for the restaurant can reduce cleaning costs, add to the restaurant's elegant and beautiful taste.
The transparency is high, reaching 99.9% or more, which makes the desktop achieve perfect fidelity effect and maximize the true color of the desktop (tablecloth). Some watermarks are sometimes generated on a smooth desktop.
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China Amulite Sunrising Luggage &Bag Products Group , http://www.chinabluesunrising.com