The tube is divided into single-layer, double-layer and […]
The tube is divided into single-layer, double-layer and five-layer tubes, which are different in pressure prevention, impermeability and hand feeling, such as the outer layer, the inner layer, the two adhesive layers, and the barrier layer. . Features: It has excellent gas barrier properties, can effectively prevent the infiltration of oxygen and odor gas, and prevent the scent of the contents and the leakage of active ingredients.
tube + cover / tube is often made of PE plastic. Divided into single-layer tubes (multiple use, lower cost) and double-layer tubes (good sealing performance) according to product thickness. According to the shape of the product, it is divided into round tubes (multiple use, lower cost), and flat tubes are also called special-shaped tubes (to be secondary joints, the cost is higher). The outer cover of the tube has a screw cap (single layer and double layer, the double cover is mostly electroplated cover to increase the product grade, looks more beautiful, the professional line uses screw cap) and the cover.
Plastic bottles are usually made of PP, PE, K, AS, ABS, acrylic, PET, etc. It is usually used for injection molding of thick cream bottles, caps, stoppers, gaskets, pump heads and dust covers for cosmetic containers; PET blowing is a two-step molding, tube blank is injection molding, and finished packaging is blowing. bottle. Other emulsion bottles such as thinner containers and washing bottles are blown bottles.
For the above content, you only need to have a preliminary understanding. It is important to remember the differences between the following common materials.
PET-PET has high transparency, and the bottle has softness and can be pinched but harder than PP.
PP-PP bottles are softer than PET, easier to pinch, and have a lower transparency than PET, so some opaque shampoo bottles are more common (convenient to squeeze).
PE—The bottle is basically opaque and not as smooth as PET. Detailed explanation of OEM packaging materials, compulsory courses for cosmetics industry!
Acrylics - thick and hard, most like glass is acrylic.