There are two main reasons that cause hot-melt glue to order books: "Look up at the bottom": First, the quality of hot-melt adhesives (this is the basis for the quality of bookbinding): The second is the quality of back-set processing for hot melt adhesives. Management (this is crucial). The above two factors are interrelated. You'll find two major causes that trigger hot- melt glue to order books: "Lookup in the underside": First, the high quality of hot- melt creams( here is the basis designed for the caliber of bookbinding): The second reason is the caliber of in back- set processing designed for hot melt adhesives. Management( this is crucial). The above two factors are interrelated.
In the selection of hot melt creams, it is necessary to choose and use hot melt creams with top quality and excellent price performance. This really is an effective method to ensure the quality in glue books, reduce the price of plastics, and improve the overall economic efficiency. The standard " in the textbook" is the product quality problem that arises from the performance and quality in the melt adhesive, which often is brought on by the reduced ultimate ultimate tensile strength and firmness from the hot melt cement adhesive plus the low melting viscosity. A similar adhesive layer thickness, diverse quality hot melt adhesives differ greatly.
From the procedure operation perspective, the existing warm melt adhesive bookbinding process publication sheet is not pulled even, once it is pulled smooth( see the paper edge or perhaps adhesive layer), it will significantly reduce the page Adhesion, producing in loose pages, page fractures. The purpose of the back again milling slot is to boost the bond part of the warm melt adhesive towards the page and increase its tensile( fold) power. Therefore, the quality requirements in the milling slot must become met in the process procedure. Thegroove depth of the back of the book( according to the situation of the paper) must be 1- you. 5 mm, and the grooved opening angle must be 60°( groove angle). The bookbinding machine( linear machine) is hard to adjust credited to the congenitally deficient( non- knife platen milling) and manufacturing accuracy errors. Therefore, the depth of the groove might only reach 1. 2 mm, which usually requires careful adjustment by the operator. Keeping the depth in the milling slot is the same, which is an essential part of ensuring the top quality of the bookbinding.
All on all, to ensure that the glue book does not detached or fall, so that the book sheet has enough tensile( fold) strength between the stitches, we must use a great quality hot melt adhesive. Spend attention to the milling grooved quality in the process procedure, pay attention to the impact and alter of the warm melt adhesive temperature on the melt viscosity so that the hot melt adhesive can reach the necessary paper soaking and binding strength.
All in all, to ensure that the glue book does not loose or fall, so that the book sheet has enough tensile (fold) strength between the seams, we must use a good quality hot melt adhesive. Pay attention to the milling groove quality in the process operation, pay attention to the effect and change of the hot melt adhesive temperature on the melt viscosity so that the hot melt adhesive can reach the required paper soaking and bonding strength.
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