What should I pay attention to when purchasing shrink wrap film?

Shrinkage packaging film, as a widely used packaging material in industries such as food, beverage, medicine, and daily chemical, has become an indispensable part of the modern packaging industry due to its excellent performance and efficient packaging method. However, there are various types of shrink wrap films on the market, and their quality varies greatly. It is crucial to choose the appropriate shrink wrap film. The following will elaborate on the precautions to be taken when purchasing shrink wrap film from several aspects.

1. Clearly define packaging requirements

Before purchasing shrink wrap film, it is important to first clarify your packaging needs, including:

• The material, shape, size, weight, etc. of the packaged items.
• Requirements for the strength, transparency, high temperature resistance, chemical resistance, and other aspects of packaging film.
• What kind of shrink wrap machine is needed for packaging, whether it is fully automatic or semi-automatic.
• Is it necessary to print patterns, text, etc. on the appearance requirements of the packaged product.
• Budget packaging costs and choose products with high cost-effectiveness.

2. Choose the appropriate material

The materials of shrink wrap film are mainly divided into the following types:

• Polyvinyl chloride (PVC): It is cheap, has a high shrinkage rate, but has poor heat resistance, is prone to produce odors, and has poor environmental protection. It has gradually been phased out.
• Polyethylene (PE): Low in price and environmentally friendly, but with low strength and shrinkage, it is not suitable for packaging heavy items.
• Polypropylene (PP): High strength, high shrinkage rate, good high temperature resistance, good environmental friendliness, but slightly expensive, suitable for packaging items such as food and beverages that require high strength and high temperature resistance.
• Polyethylene terephthalate (PET): high strength, good high temperature resistance, high transparency, good environmental friendliness, but relatively high price, suitable for packaging high-end products.

3. Pay attention to the thickness and shrinkage rate of the film

The thickness and shrinkage rate of shrink wrap film determine the strength and appearance of the packaging.

• Thickness: Choose the appropriate thickness based on the weight and size of the packaged item. If it is too thin, it is prone to damage, while if it is too thick, it will increase costs.
• Shrinkage rate: Choose the appropriate shrinkage rate based on the shape and size of the packaged item. If it is too low, the shrinkage effect will not be significant, and if it is too high, it is easy to deform.

4. Consider the performance of packaging film

In addition to the basic material, thickness, and shrinkage rate, other properties of the packaging film also need to be considered, such as:

• Transparency: Choose the appropriate transparency based on product characteristics, for example, food packaging requires films with high transparency to display the product.
• High temperature resistance: Choose the appropriate high temperature resistance based on the temperature during the packaging process, for example, heat shrink packaging requires a high temperature resistant film.
• Chemical resistance: Choose appropriate chemical resistance based on the characteristics of the packaged items, such as the need for chemical resistant films for corrosive items.
• Environmental friendliness: Choose environmentally friendly materials and production processes to reduce the impact on the environment.

5. Choose a reputable manufacturer

Choosing shrink wrap produced by legitimate manufacturers is essential to ensure the quality and safety of the product.

• Check the manufacturer's qualifications and production license.
• Understand the manufacturer's production process and quality control system.
• View user reviews and case studies.

6. Request samples

Before purchasing shrink wrap film, it is recommended to request samples for testing to confirm if the product meets your requirements.

• Test the strength, shrinkage rate, transparency, high temperature resistance and other properties of the membrane.
• Observe the packaging effect and confirm if it meets your expectations.

7. Understand after-sales service

Choosing a manufacturer that provides comprehensive after-sales service can ensure smooth operation during use.

• Understand the manufacturer's after-sales service commitments, including warranty period, maintenance services, etc.
• Consult the manufacturer's after-sales service phone number and contact information.

8. Choose the appropriate packaging machine

Choose the appropriate shrink wrap machine according to your packaging needs in order to achieve the best effect of shrink wrap film.

• Choose the appropriate type of packaging machine, such as fully automatic packaging machine, semi-automatic packaging machine, etc.
• Choose the appropriate packaging machine size and speed to meet production needs.

It should be noted that when choosing shrink wrap film and packaging machine, various factors need to be considered comprehensively in order to choose the most suitable product for oneself.

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Jiangsu Sitec Intelligent Manufacturing Co., Ltd. is a high-tech enterprise specializing in the field of intelligent manufacturing, with rich experience and strong research and development capabilities, providing customers with high-quality intelligent solutions. The company's main products include automatic palletizing conveyor lines, automatic packaging lines, automatic transportation lines, automatic loading and unloading systems, industrial robots, robotic arms, palletizing machines, etc. The company's products are widely used in industries such as food, beverage, medicine, daily chemical, logistics, etc., and have been highly recognized by customers. If you need to purchase shrink wrap film or related equipment, we recommend that you contact Jiangsu Stek Intelligent Manufacturing Co., Ltd. They will provide you with professional consultation and services.