Production standard of bulk cosmetic plastic tubes

2021-10-11

When it comes plastic cosmetic tubes from plastic cosmetic tube manufacturers, there are high-density polyethylene tubes, polypropylene tubes, and polyester tubes for cosmetic plastic tubes. Due to the specifications, colors and different shapes of many cosmetic plastic tubes at present, the following main selection criteria should be grasped:

1. Sealing of beauty tube cover, water vapor permeability. Air tightness and moisture permeability play a vital role in the stability of charging.

2. Quality standards for plastic cosmetic tube products. Carry out quality analysis from the manufacturer’s product quality standards to determine whether it is advisable. Cosmetic plastic tube companies should set corporate standards higher than national standards, and industry standards are more stringent.

3. Choose plastic cosmetic tube to live in the raw materials and formula of additives: the product standard of solid plastic cosmetic tube does not apply to the main raw materials, and must comply with non-toxic, odorless, etc., because there are many main raw materials, which need to be selected. For the overall performance, high-density polyethylene and cosmetic polypropylene tubes are generally used. For example, PET cosmetic tubes can be used for materials that require good transparency and are generally used in liquid skin care product formulations. Polypropylene or polyethylene cosmetic tubes are not the main raw materials.

4. Stability and compatibility of cosmetic plastic tube. When using makeup plastic tubes, especially for skin care products, new plastic cosmetic tubes should be tested for skin care products first to check the stability and charge of the compatibility of the plastic makeup tubes with skin care products. The mutual penetration, dissolution, adsorption, chemical reaction, and deformation of cosmetic plastic tubes can be determined through scientific testing.

5. Quality assurance system. Supplier of cosmetic tubes audits to purchase plastic tubes have become an essential part. After passing the audit, cosmetic tube packaging suppliers can make a comprehensive and correct assessment of the overall level of software and hardware facilities, technical equipment, and quality that can be produced by cosmetic tube packaging suppliers.

A Brief Talk on the Shape and Process of Cosmetic Plastic Tube

The cosmetic plastic tubes from cosmetic tube manufacturers should have sufficient rigidity and beautiful appearance, which can attract the user's attention in appearance, and ensure that consumers can have many choices and usability in use. The common shapes of cosmetic plastic tubes are round, square, oval and so on. From the perspective of use, each has its own advantages and disadvantages. The round plastic tube has high rigidity, but its appearance is not beautiful. The square plastic tube is beautiful in appearance, but it is not easy to control the uniform wall thickness of the plastic skincare tube during molding.

Plastic cosmetic tube manufacturers must carry out good control and design in the production of cosmetic plastic tubes. Cosmetic tube packaging suppliers make and produce according to certain production and processing techniques, and have good performance and functions. Cosmetic tube manufacturers are in the industry, which can fully demonstrate the important value.

1) When cosmetic tube packaging suppliers are designing extruded cosmetic plastic tubes, if the material is high-density polyethylene or polypropylene, the cross-section of the cosmetic plastic tube should be rectangular or oval, and for the material it is low-density polyethylene or other flexible materials. For plastic tubes, the cross section is preferably round. This makes it easier for the contents to be squeezed out of the plastic cosmetic tube. The plastic parts used in conjunction with the cosmetic plastic tube port are mainly caps and seals. The design of cosmetic plastic tube port should be focused on; consider how to make the plastic tube port better match the cover and sealer to the bottom of the plastic tube, which is the weak part of the plastic tube's mechanical properties. Therefore, the bottom of the cosmetic plastic tube is generally designed to be concave; the corners and concaves of the plastic tube are all made with larger arcs. In order to facilitate the stacking of plastic tubes and increase the stacking stability of plastic tubes, the bottom of skincare plastic tubes should be designed with internal grooves.

2) When labels are used on the surface of the cosmetic plastic tube, the label surface should be flat. A "frame" can be designed on the surface of the plastic beauty tube, 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 last contact part of the parison inflated, and the wall thickness of this part is small. Therefore, the edges and corners of the plastic tube should be designed with rounded corners. Changing the surface shape of the plastic tube, such as the middle part of the plastic tube being relatively thinner, and increasing the circumferential grooves or ribs on the surface of the skincare plastic tube can improve the rigidity and bending resistance of the plastic tube. The longitudinal grooves or ribs can eliminate the deviation, sagging or deformation of the skincare plastic tube under long-term load.

3) Since most cosmetic plastics have notch sensitivity, skincare plastic tubes are prone to cracks and cracks at sharp corners, roots of mouth threads, necks and other parts. Therefore, plastic cosmetic tube manufacturers should be designed to be round in these parts. Horn. For the transfer point of the skincare plastic tube, it is necessary to support most of the load of the skincare plastic tube, so locally increasing the wall thickness at this place is also beneficial to improve the rigidity and load resistance of the skincare plastic tube.

4) The printing surface of the cosmetic plastic tube is the most concentrated part of consumers. The printing surface should be smooth and continuous; if the plastic tube contains handles, grooves, ribs and other structures, plastic cosmetic tube manufacturers should be careful not to cause inconvenience to the printing operation when designing. The elliptical plastic tube has higher rigidity, but the manufacturing cost of the mold is higher. Therefore, in order to ensure the rigidity of the plastic tube, in addition to selecting materials with high rigidity, the cosmetic tube manufacturer also needs to enhance the rigidity and load resistance of the cosmetic plastic tube through the custom design plastic cosmetic tube.