The quality of the strapping depends on the purity of the polypropylene in the strapping. There are many types of strapping on the market: pure polypropylene, polypropylene plus masterbatch, and polypropylene plus recycled materials, polypropylene plus recycled materials and masterbatch. The packaging tape produced by pure polypropylene is completely transparent, the packaging tape produced by polypropylene plus masterbatch is translucent, the packaging tape produced by polypropylene plus recycled material is basically opaque, the packaging tape produced by polypropylene plus masterbatch and recycled material is basically opaque. Completely opaque. There is also a kind of packing belt made of completely recycled materials and calcium carbonate powder sandwich material. The packing belt made of completely recycled materials is relatively soft. Only the surface of the sandwich material belt is raw material, and the rest is calcium carbonate powder (lime powder). The quality of the strapping depends entirely on the purity of the polypropylene. The higher the purity of the polypropylene, the better the pulling force of the strapping.
Packing strap joint methods:
a) Hot melt lap joint type. It uses heating methods such as electric heating welding, mechanical high-frequency oscillation welding and ultrasonic welding. The surface layer of the plastic belt is heated and melted. The melted surfaces of the two belt ends are overlapped and maintained under a certain pressure for a certain period of time. After the melted surface condenses, , the method of bonding the plastic tape joints. This joint method is suitable for polypropylene plastic belts, because if the polypropylene plastic belt is mechanically fixed with iron buckles, its strength is only 50% of the base material, and adhesive connections are not suitable.
b) Iron buckle type. This method is to first use the one-way work of the tensioner ratchet to tighten the strap, then place an iron buckle at the joint, then use a clamp to wrap the iron buckle around the two layers of straps, and concave and convex the teeth on the side of the iron buckle The tooth shape can bite the strap to prevent it from loosening. Iron buckles are usually made of galvanized iron sheets. During operation, the iron buckles of appropriate specifications should be selected according to the type of strapping strap.
c) Ligation. This type of joint uses soft plastic ropes, hemp ropes, etc. as binding materials, and the joints are tied into slip knots. This joint method is both strong and beautiful, and easy to untie.
Packing straps are made of a mixture of PP and PET.
Main production process: melting of plastic granules---pressing belt--forming---cooling---winding---packaging---storage packing belt system adopts polyethylene Propylene is a network-structured packaging material produced by heating, melting, stretching, and cooling. The basic parameters that affect the quality of the packaging tape are tension, length, curvature, elongation, etc. When the tensile force and other parameters are the same, the longer the length, the lower the cost.
Economic benefits of packing tapes* A full range of varieties and colors are available
* In line with the CIS project promotion image
* Suitable for a variety of product packaging requirements
* Strengthen the visual effect of product packaging
* Quality conforms to GB12023-89 standard
* Two national patents
* More in line with promotion image
Several commonly used packing tapes:
This product is used with automatic packing machines and is suitable for newspapers, publishing houses, bookstores, paper factories, department stores, food, post offices, and candy. Bundling and packaging operations for bakeries, lumber shops, etc.
PP strapping technical parameters PP strapping product description: Width 5mm Thickness 0.4mm Tension gt; 60kg Weight 10kg Length 7000m Paper core inner diameter 200mm PP strapping 9mm Width 9mm Thickness 0.6mm Tension gt; 90kg Weight 10kg The length is 3000m and the inner diameter of the paper core is 200mm.
Characteristics of PET packing straps
Machine packing straps, manual packing straps, heavy-duty packing straps, printed packing straps, PET plastic steel strap characteristics: 1. Strong tensile strength: 2. Small elongation: elongation The length is only one-sixth of that of polypropylene (PP) belts, and it can maintain tension for a long time. 3. Strong temperature resistance: the melting point is 260 degrees, and it will not deform when used below 120 degrees. 4. Good flexibility: no sharp edges of the steel belt, safe to operate, neither hurting the hands nor damaging the tied objects.
5. Beautiful and rust-free: There is no risk of steel belt rust contaminating the bundled objects, and the color is bright and discernible. 6. Good economic benefits: The length of 1 ton of plastic steel belt is equivalent to 6 tons of steel belt. The unit price per meter is lower than that of steel belt, which can reduce your costs.