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Sealing performance of plastic bags and about what factors

Categories: NewsStars: 3Stars Visit: - Release time: 2014-05-12 14:50:00
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Sealing performance of plastic bags if not , it will affect the quality of the stored goods, plastic bags for commodities will not play a very good protection . The heat sealable plastic bags which factors and related it?

Different plastic bags have different heat sealing , packing density of the particles and the large plastic food bags, requires high heat seal strength plastic bags ; But detergent so lightweight , fine powdery substance, when due to packaging Gigalight dust, plastic packaging material is required inclusions better sealing properties.

When the sealing material is determined , and the sealing quality is directly related to the heat sealing process , the sealing is usually the main controlling temperature, pressure and time. When the sealing temperature above sealing the plastic film becomes viscous flow state ; while sealing pressure makes the interface between molecules in the plastic film to produce viscous flow state of mutual penetration and diffusion of extrinsic motivation ; certain sealing time plastic film interface elements as soon as possible interpenetration , diffusion, the interface disappear as a whole , which has a good seal. Minimum sealing temperature melting temperature depends on the material of the sealing material , heat-sealing temperature should be above the melting temperature of the heat-seal material , but much higher than , the material to be sealed by a single film or composite film , the film thickness , effects of sealing pressure , sealing speed and other technical indicators. In general, high pressure sealing ; sealing slow ; large film thickness, the heat sealing temperature can be lower, and vice versa.