How to solve the problems of easy cracking and poor toughness of PET packing beltHow to solve the problems of easy cracking and poor toughness of PET packing belt
Now many manufacturers of PET straps will encounter such problems: the straps are easy to split, the tensile strength is poor, and the toughness is not enough. Seriously affecting the production and sales of packing belts. To solve this problem, you must first clarify the causes of these problems, so that you can cure the disease and get paid.
Bottle flake material|Recycled material has an absolute price advantage compared to new material. It has saved a lot of costs and has always been the first choice for PET packaging tape. However, bottle flakes|recycled materials have some fatal flaws: the recycled materials that are processed through recycling often have their own viscosity, tensile strength, and toughness, and the quality of the recycled materials is often uneven. , This leads to unsatisfactory quality of the PET packaging tape produced. Therefore, if you want to make good tape with recycled materials, you must first increase the viscosity and toughness of the recycled materials.
How to increase the viscosity and toughness of recycled materials-the use of PET viscosity-increasing chain extender can effectively improve the viscosity and toughness of PET in raw materials.
The use of PET plastic tackifier and chain extender can greatly improve the toughness of the material. It is a reactive tackifier and is used for various basic molding products, especially suitable for the tackifying and toughening of PET regrind. Increasing the strength of the recycled PET resin melt is sufficient to meet PET extrusion (sheets, strapping) to reduce the thermal oxidation and hydrolysis of PET, enhance the tensile strength of the fibers and the impact resistance of the sheets to cold resistance. It is suitable for transparent PET plastic products without affecting the transparency of the products. PET plastics are thickened and toughened. PET new materials/recycled materials are modified.
Recommended dosage: 0.5%~0.8%, can be increased or decreased according to production cost and quality requirements.
Usage: suitable for processing methods such as injection molding, granulation, extrusion, blending, etc.
PET thickening and toughening agent, PETG thickening and toughening agent, has the effect of thickening and toughening of raw materials and materials, does not affect the transparency and will increase the transparency, can solve the problem of -40 degrees, +70 degrees, the viscosity can be increased To 20%. The toughness can be greatly improved by 2-3 times, so that the return material and nozzle material can reach the level of new material, and the product passes the US FDA.
Storage: When stored, it should be placed in a cool place and kept dry. Except for use, it should not be directly exposed to sunlight.