Selection of materials for book printing envelopes in printing factories [Buke printing]

Selection of materials for book printing envelopes in printing factories [Buke printing]

A letter cover, also known as a book cover, book letter, book box, etc., is used to package a book or a set of books and has a protective effect on the books. The origin of letter sleeves can be traced back to ancient Chinese thread bound books. This type of book has a larger font size and a thinner subscription volume. A book needs to be bound into multiple volumes, and for ease of preservation, it needs to be made into a letter cover to package one book together. There are several forms of letter covers used for thread bound books, including clamp type, wrapping type, and square type.

The material of the clamp type cover is wooden board. After punching holes, tie them tightly with ribbons. The wooden boards used for letter covers are mostly made of high-grade woods such as camphor wood and sandalwood, and some even have book titles engraved on the boards and painted with colors.

A package cover is a cover that wraps all a set of books together. It usually uses cardboard as the base and is wrapped with fabric on the outer layer. The selection of fabric is determined based on the grade of the book. When wrapping books, first place a set of books neatly in the middle, wrap them around the top and bottom sides, then wrap them around the front opening, and finally wrap them around the other side and tie them tightly with a ribbon.

A wrapped envelope is a commonly used form. When making, five pieces of cardboard need to be cut, three of which have the same size as the book, and the other two have the same thickness as a set of books. Finally, they are mounted together with fabric, and a pin strap and pin head are installed on the front edge of the cover, and a pin hole is installed on the other wall. When using, neatly place a set of books in the middle, wrap them, and insert the pins into the holes. Paste the book title on the face of the envelope. After being wrapped in this letter cover, both the upper and lower cuts of the book are exposed. Due to the different grades of books, different fabrics can be used. Generally, books can be made of fabrics, while more refined books can be made of fabrics such as silk, satin, satin, and satin.

A square shaped envelope, similar to a box shaped envelope, differs in that the size of the two boards on the front of the envelope is the same as the size of the book. The selection of fabric should also be carefully considered, and all sides of the book should be wrapped in a cover after wrapping. This form is also commonly used in modern gift book sets, but the fabric is often framed with paper, and some are even printed with exquisite patterns.

The binding forms of modern publications are becoming more diversified, and the form of letter covers has also changed. One is used for the protection of high-end books, and the other is to package a set of small series books in a hardcover book cover. White cardboard is often used to mount and paste paper with cover and back text printed on it. Finally, after die-cutting and creasing, it is bound or pasted into a cover of the same size as the book. Multiple sets of paperback books can also be packaged in one case, using the same production method as hardcover books, but different thicknesses of cardboard can be selected according to the thickness of the book set. For children's books, colorful images can be printed on the outside of the letter cover. The method is to use coated paper to print and mount it on cardboard, and finally make the letter cover. There is also a gift style letter cover, which is made of brocade or satin fabric and framed into a brocade box style.

Selection of materials for book printing envelopes in printing factories [Buke printing]