When purchasing pet bottle preform, pay attention to the following aspects:

1, pet bottle preform the wall thickness is uniform, because this is the part that attracts people's attention. The printing surface should be flat and continuous; If the liquid plastic bottle embryo contains a handle, groove, reinforcement and other structures;

2, the printing surface of pet bottle preform, planning should be careful not to give the printing operation inconvenient. The surface of the label should be flat. A "frame" can be planned on the surface of the pet bottle preform to make the label accurately positioned;

3. When the pet bottle preform surface is labeled, it does not move, such as the middle of the pet bottle preform is relatively thin;

4, change the surface shape of pet bottle preform, increase the circumferential groove or rib on the surface of pet bottle preform, can improve the stiffness and bending resistance of pet bottle preform. Longitudinal grooves or reinforcing bars can eliminate the deviation, sagging or deformation of the pet bottle preform under temporary load.

5. When planning extruded plastic bottle embryo, the cross section of pet bottle preform should be rectangular or oval. For polyethylene or other flexible pet bottle preform, the cross section should be circular. This is easy to extrude the contents from the pet bottle preform in the design of extruded plastic bottles, if the material is polyethylene or polypropylene, the cross section of the plastic bottle should be rectangular or oval, for polyethylene or other flexible plastic bottles, the cross section is better to round.

This makes it easy to squeeze the contents out of the plastic bottle. The plastic parts used with plastic bottle mouths are mainly bottle caps and sealers. The design of plastic bottle mouth should be considered; Considering how to make the mouth of the plastic bottle better fit with the lid and seal at the bottom of the plastic bottle is the weak part of the mechanical properties of the plastic bottle.

Therefore, the bottom of the plastic bottle is generally designed to be concave; The corner of the plastic bottle and the inner recess are made of large arc. In order to facilitate the stacking of plastic bottles and increase the stability of the stacking of plastic bottles, the bottom of the plastic bottles should be designed with grooves.

pet bottle preform https://www.plasticsproduct.com/38mm-100ml-150ml-pet-bottle-preform.html