The opening easiness of functional design of flexible packaging
The opening easiness of packaging materials is one of the additional functions of packaging which is gradually prominent with the increase of market competition. How to better provide thoughtful service for consumers has long been concerned by various manufacturers. The emergence of small package is the result of market demand, it can provide consumers with simple, easy to carry, moderate weight of goods, compared with large size, weight, not easy to carry, large weight of large package, it is more suitable for tourism, catering and other small consumption environment. For small packaging, easy opening and sealing are its two outstanding characteristics, easy opening is the magic weapon of small packaging to win the favor of consumers. For example, stand up pouch with zipper,
flat bottom pouch with zipper, have the characteristic of easy opening and sealing.
Small package form of bag packaging for easy to open have certain requirements, such as kleenex, food and infusion of small packaging, puffed food (bag) packaging, instant noodles (bag) packaging and a variety of daily chemical products packaging. The opening can be made according to the easy opening provided at the edge of the bag (usually at the heat seal), or peeled off from the heat seal at one end of the bag, or opened with other tools such as scissors. Obviously, for the small packaging, on the premise of without additional tools can easily open the bag is the most ideal, it can maximize the used with small portable packing may at any time for using the characteristics of easy to tear open the packing bag of easy opening is the most common (triangle), tear is the main indicator of relates to whether the package is easy to open, And whether the friction coefficient is reasonable is the main factor that restricts whether the material surface can be held firmly by consumers in the process of tearing the material. The tearing force of packaging material directly represents the force required by consumers when opening the packaging.
In addition, in order to ensure the convenience of opening at the heat sealing end, the heat sealing strength of the material should be controlled within a reasonable range, and the surface friction properties of the packaging material should also be considered. For example, OPP//VMCPP biscuit packaging bag, because its thermal bonding strength is generally relatively low, a considerable part of the commercially available packaging is not designed to tear.
