Cosmetic packaging material hose processing

The process of processing cosmetic packaging material hoses is actually quite strict. In fact, regular manufacturers have their own strict processing operation methods. There are many problems to pay attention to in the processing of cosmetic packaging material hoses. Shunshi Plastic Industry will give you a specific introduction below.


First of all, when designing extruded plastics, if the material is high-density polyethylene or polypropylene, the cross-section of the cosmetic packaging hose should be rectangular or oval, and for the material it is low-melt polyethylene or other flexible materials. When the material is used, it is better to have a round cross section because it is convenient for the contents to be extruded from the cosmetic packaging tube. The plastic parts used in conjunction with the cosmetic packaging material hose mouth are mainly bottle caps and sealers. The design of the material bottle mouth should be carefully considered so that the cosmetic packaging material hose mouth can better match the cap and sealer. The bottom of the material hose is the weak part of the mechanical properties of the cosmetic packaging material hose. Therefore, the bottom of the cosmetic packaging material hose is generally designed to be concave. The corners and inner recesses of the cosmetic packaging material hoses are all made large arcs. In order to facilitate the stacking of cosmetic packaging material hoses and increase the stacking stability of the cosmetic packaging material hoses, the bottom of the cosmetic packaging material hose should be designed with an inner groove.


Secondly, when using labels on the surface of the cosmetic packaging material hose, try to make the label surface as flat as possible. A 'frame' can be designed on the surface of the cosmetic packaging material hose, so that the label can be positioned accurately without movement. In blow molding, the first part of the parison that is blown into contact always tends to harden first. Therefore, the wall thickness of this part is also larger. The edge and corner part is the contact part after the parison is inflated, and the wall thickness of this part is small. Therefore, the edges and corners of the cosmetic packaging material hose should be designed with rounded corners. Change the surface shape of the cosmetic packaging material hose. For example, the middle part of the cosmetic packaging material hose is relatively thinner, and increasing the circumferential grooves or ribs on the surface of the cosmetic packaging material hose can improve the rigidity and bending resistance of the cosmetic packaging material hose. . The longitudinal grooves or reinforcing ribs can eliminate the deviation, sagging or deformation of the cosmetic packaging material hose under long-term load.


Again, the printing surface of the cosmetic packaging material hose is the place where consumers' attention is concentrated. The printing surface should be smooth and continuous; if the cosmetic packaging material hose contains handles, grooves, ribs and other structures, the design should be careful not to cause inconvenience to the printing operation. The oval-shaped cosmetic packaging material hose has higher rigidity and higher mold manufacturing costs. Therefore, in order to ensure the rigidity of the cosmetic packaging material hose, in addition to selecting high-rigidity materials, the shape design of the cosmetic packaging material hose must also be used to enhance the rigidity and load resistance of the cosmetic packaging material hose.


After finishing, because most plastics have notch sensitivity, cosmetic packaging material hoses are prone to cracks and cracks at sharp corners, roots of mouth threads, necks, etc., so these parts should be designed Fillet. For the transfer point of the rectangular cosmetic packaging material hose, it is necessary to support most of the load of the cosmetic packaging material hose. Therefore, locally increasing the wall thickness at this point is also beneficial to improve the rigidity and load resistance of the cosmetic packaging material hose.


The processing and packaging of cosmetic packaging material hoses must pay attention to the above issues.