Do you know the common plastic cosmetic squeeze tube problem?

Plastic cosmetic squeeze tube is mainly made of polyethylene or polypropylene and other materials and added a variety of organic solvents. Plastic squeeze tube cosmetics widely used polyester (PET), polyethylene (PE), polypropylene (PP) as raw materials, cosmetics tube manufacturer after adding the corresponding organic solvent, after high temperature heating, cosmetics tube manufacturer by plastic mold after blow molding, extrusion blow or injection molding of plastic cosmetic containers. Do you know the common plastic cosmetic squeeze tube problem?

1, cosmetics tube manufacturer in the design of extrusion type plastic squeeze tube, if is made of high density polyethylene or polypropylene, the cross section of plastic squeeze tube cosmetics should be rectangular or oval, low density polyethylene or other flexible material for plastic squeeze tube cosmetics, the round cross section as well. This allows the contents to be extruded from the plastic cosmetic squeeze tube. Plastic parts used with plastic cosmetic squeeze tube mouth are mainly tube cover and sealer. Plastic cosmetic squeeze tube mouth design, cosmetic tube manufacturers should focus on how to make plastic cosmetic squeeze tube mouth can better match with the cover and seal. The bottom of plastic cosmetic squeeze tube is the weak part of the mechanical properties of plastic cosmetic squeeze tube. Therefore, the bottom of the plastic cosmetic squeeze tube is generally designed to be concave; The corner of the plastic cosmetic squeeze tube, and the concave place, do a large arc excessive. In order to facilitate the stacking of plastic cosmetic squeeze tube, increase the stacking stability of plastic cosmetic squeeze tube, the bottom of the plastic cosmetic squeeze tube should be designed inside the groove.

2. When the surface of plastic cosmetic squeeze tube is labeled, the labeled surface should be smooth. Cosmetic tube suppliers can design a "frame" on the surface of plastic cosmetic squeeze tube, so that the label is accurately positioned and does not move. In blow molding, the first part of the billet blowing contact, always tend to the first hardening part. Therefore, the wall thickness of this area is also larger. The edge and corner part is the last contact part of billet blowing, and the wall thickness of this part is small. Therefore, the edges and corners of the plastic cosmetic squeeze tube should be designed as rounded corners. Cosmetic tube suppliers change the surface shape of plastic cosmetic squeeze tube, such as plastic cosmetic squeeze tube in the middle relatively small, increase the surface of plastic cosmetic squeeze tube circumferential groove or convex ribs, can improve the stiffness and flexural resistance of plastic cosmetic squeeze tube. Longitudinal grooves or stiffeners can eliminate deviation, sagging or deformation of plastic cosmetic squeeze tube under long-term load.

3. For cosmetic tube manufacturers, the printing surface of plastic cosmetic squeeze tube is the most concentrated part of consumers' attention. The printing surface should be smooth and continuous; If the plastic cosmetic squeeze tube contains handle, groove, reinforcement and other structures, attention should be paid to the design should not cause inconvenience to the printing operation. Oval plastic cosmetic squeeze tube, stiffness is also higher, but the cost of manufacturing cosmetic tube mold is higher. Therefore, in order to ensure the stiffness of plastic cosmetic squeeze tube, in addition to the selection of high stiffness of materials, cosmetic tube manufacturers also through the shape of plastic cosmetic squeeze tube design, enhance the stiffness and load strength of plastic cosmetic squeeze tube.

4, because most plastics have concave sensitivity, plastic cosmetic squeeze tube at the sharp corner, the root of the mouth thread, neck and other parts, easy to produce cracks and cracking phenomenon, so these parts, cosmetic tube manufacturers should be designed into rounded corners. For the transfer of the rectangular plastic cosmetic squeeze tube, most of the load of the plastic cosmetic squeeze tube needs to be supported, so the local increase in the wall thickness, but also conducive to improving the stiffness and load strength of the plastic cosmetic squeeze tube.

Plastic cosmetic squeeze tube is used polyester (PET), polyethylene (PE), polypropylene (PP) as raw materials, add the corresponding organic solvent, after high temperature heating, through the plastic mold through blow molding, extrusion blowing, or injection molding plastic container. Plastic cosmetic squeeze tube is not easy to break, low cost, high transparency, food grade raw materials and so on.

When using plastic products, special attention should be paid to avoid direct sunlight, high temperature, etc., so as to avoid chemical reactions. In addition, when you buy plastic cosmetic packaging at wholesale, you should choose plastic cosmetic packaging products with PE (polyethylene) or PP (polypropylene) marks, less decorative patterns, colorless, tasteless and smooth surface.