H2FH-28-C flender service Helical gear Reduction Box H2

Flender/Flender Gear Units/Helical gear Reduction Box H2

be heat sealed. To im-prove its barrier and heat sealability properties, paper is often combined with wax, plasticlm, metal foil, or combination of foil and plastic lm. Paperboard is made in similar way to paper but is thicker to protect foods from mechanical damage. The main characteristics of board are thickness, stiffness, ability to crease without cracking, degree of whiteness, surface properties, and suitability for print- ing (Brown, . White board is suitable for contact with food and is often coated withpolyethylene, polyvinyl chloride, or wax for heat sealability. It is commonly used to pre-vent freezer burn in stored frozen products. Pulp containers are made from paper pulpcompressed in molds to remove moisture. Pulp containers are used for egg cartons, low-cost food trays, and cushioning for food products. Corrugated board is the most common form of secondary food packaging and is used by virtually every industry. According to Kelsey (, 2 billion square feet ofcorrugated board, with market value of $1.8 billion, was produced in 1. Corrugated board has an outer and an inner lining of kraft paper with central corrugating (or uting) material. This is made by softening kraft paperboard with steamand passing it over corrugating rollers. The linear are then applied to each side, using suitable adhesive. The board is formed into cut-outs that are then assembled into cases at the lling line. There are four different ute sizes, , , , and utes, which varyin height and the number of utes per unit length of board. They can be used alone or incombination with one another to produce single-face, single-wall, double-wall, and triple-wall corrugated board constructions as shown in Fig. 1. Corrugated board has good impactabrasion and compression strength and is mainly used in secondary packaging containers. The most standard type of secondary packaging material is single-wall ute. High stor- age humidity that causes delamination of the corrugated material is pr