Film sealing/packaging opening adopting pre-folding structure

Abstract

The invention belongs to the technical field of machining and manufacturing and film preparation, and provides a film sealing / packaging opening adopting a pre-folding structure, in the preparation process of the film sealing / packaging structure, an upper film and a lower film are folded respectively, and during use, the two sides of the film structure are slightly pulled to unfold the pre-folding parts of the films, so that the film sealing / packaging opening is formed. The friction / oscillation disturbance effect in the folding and unfolding process and the folding marks in the opposite directions are beneficial to overcoming the adhesion effect between the upper-layer film and the lower-layer film, and the purpose of rapidly opening a film sealing / packaging opening is achieved. Compared with a traditional film sealing and packaging opening opening mode, the method has the advantages that film materials do not need to be modified to reduce adhesion between films, external assistance requiring high interface viscosity is not needed to overcome adhesion between the films, and the method is simple in overall process, compatible with a film sealing / packaging preparation process, easy to implement, low in price and good in universality.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing and manufacturing, and relates to a film sealing / packaging port adopting a pre-folded structure. technical background [0002] Film sealing / packaging refers to the act of sealing / packing objects with inexpensive films. It has a wide range of applications in aerospace films, energy, electronics and daily life, such as aerospace expandable film structures and home shopping films. plastic bags etc. Opening the film seal / package requires overcoming film-to-film adhesion, allowing the film layers to detach. The film sealing / packaging opening is completed by modifying the film material to reduce the interfacial viscosity between the films. However, the modification of the film material involves chemical reactions and the selection of new materials, which is costly, complicated in the preparation process, and easy to cause residual substances. The external auxiliary with strong interface ...

AI Technical Summary

Problems solved by technology

Film sealing / package opening is completed by modifying the film material to reduce the interface viscosity between the films, but the film material modification involves chemical reaction and selection of new materials, which is costly, complicated preparation process, and easily causes residual substances

The external aid with strong interfacial viscosity is used to contact the outside of the film and produce sliding displacement, so that the upper and lower layers of the film are debonded, so as to achieve the purpose of opening the film seal / package, but it is required to use auxiliary equipment with stronger interface viscosity than the film. Detachment between film layers, with certain limitations and usage constraints

Images