The square sealing film is designed specifically for irregular containers, using high-strength multi-layer composite materials to perfectly fit non-circular bottle mouths such as square and rectangular. Its core structure includes a barrier aluminum foil layer, a tear resistant PET outer layer, and food grade heat sealing adhesive, ensuring excellent sealing performance while solving the pain points of traditional circular sealing films that are prone to warping edges and poor sealing on square containers. 

This sealing film has three core advantages: firstly, precise right angle heat sealing technology, ensuring complete adhesion of the four corners and eliminating the risk of leakage; Secondly, it has excellent compressive performance, maintaining sealing integrity during transportation and stacking; Thirdly, it is compatible with automated production lines and supports high-speed heat sealing (1-2 seconds/piece). The surface can be customized with high-definition printing to meet the differentiated needs of brands, suitable for square packaging of high-end cosmetics, seasonings, drugs, etc. 

The square sealing film, through innovative structural design, retains the high barrier properties of aluminum foil (oxygen permeability<0.5cm ³/m ² · day) while breaking through geometric limitations. The low-temperature heat sealing adhesive with a special formula (130-160 ℃) can be adapted to various materials such as glass, ceramics, PP/PET plastics, etc., and there is no residual adhesive when opened. The product has passed international certifications such as FDA and EU, making it an ideal choice for upgrading the sealing solution of square packaging containers.

Leadmens Packaging is a wholesale and customized manufacturer of aluminum foil sealing film, specializing in the research and development and production of various high barrier packaging materials and easy to tear sealing packaging materials. They are widely used in food, medicine, cosmetics, and daily necessities packaging, and have many advantages such as green environmental protection, high safety, strict testing, and stable quality. If you are interested in or have any questions about us, please feel free to call us for consultation.