Child Proof Bags, that is, child safety bags, are a type of packaging designed to prevent children from opening them easily, thus protecting children from potential harm caused by dangerous items. The following are the most commonly used materials for making child safety bags.
- Plastic materials
Polyethylene (PE): It has good flexibility, corrosion resistance and moisture resistance, and is non-toxic and odorless, meeting the safety standards for food packaging. Among them, Low-Density Polyethylene (LDPE) has a soft texture and is often used to make soft child safety bags; High-Density Polyethylene (HDPE) has higher strength, is tougher and more durable, and can be used for safety bags requiring higher protective performance.
Polyethylene Terephthalate (PET): It is a transparent and tough plastic with good mechanical strength, abrasion resistance and barrier properties. It can effectively block moisture, oxygen and light, and extend the shelf life of the contents. At the same time, child safety bags made of PET material also have the characteristics of not being easily deformed and being easy to process and form, and can be made into bags of various shapes and sizes.
- Composite materials
Aluminum foil composite materials: It is usually made by laminating aluminum foil with plastic film, paper and other materials. Aluminum foil has excellent barrier properties, which can completely block light, oxygen, moisture and odor, providing good protection for the contents. After being laminated with plastic film, it not only enhances the toughness and abrasion resistance of the bag, but also enables heat sealing, making it convenient to make various forms of packaging bags; Laminating with paper can increase the stiffness and texture of the bag while maintaining a certain degree of flexibility.
Multilayer co-extruded film: It is made of various plastic raw materials with different properties through the co-extrusion process. Each layer of material plays its unique function, such as the barrier layer, sealing layer, reinforcement layer, etc., so that the bag has good comprehensive properties, such as high barrier property, high strength, good heat sealability and puncture resistance. This material can be customized according to different usage requirements to meet the packaging requirements of various products.
- Paper materials
Kraft paper: It has high strength and toughness, is wear-resistant and tear-resistant, and is environmentally friendly and recyclable. After special treatment, kraft paper can also have waterproof and moisture-proof properties. In child safety bags, kraft paper is usually used in combination with other materials such as plastic film and aluminum foil to increase the barrier properties and protective effects of the bag.
Recycled paper: It is made from recycled waste paper and is in line with the concept of environmental protection. Although the strength and performance of recycled paper may be slightly inferior to those of virgin paper, through reasonable design and processing, it can also be used to make child safety bags, especially for some products that are more sensitive to cost and have higher environmental protection requirements.
- Biodegradable materials
Polylactic Acid (PLA): It is a biodegradable thermoplastic polyester made from renewable resources such as corn starch and sugarcane through fermentation. It has good biocompatibility, mechanical properties and processing properties, and can be decomposed into carbon dioxide and water within a certain period of time in the natural environment without causing pollution to the environment. It is an environmentally friendly packaging material that can be used to make child safety bags.
Polybutylene Succinate (PBS): It is also a biodegradable polyester material with good thermal stability, mechanical properties and processing properties. Its degradation rate can be controlled by adjusting the molecular structure and adding additives. Child safety bags made of PBS material can gradually degrade in the soil, compost and other environments after being discarded, reducing the pressure on the environment.