Introduction and Distinguishing Methods of Double-Layer PE Tubes and Five-Layer PE+EVOH Barrier Tubes

I. Double-Layer PE Tubes

Double-layer PE Tubes are widely used and belong to mid-to-low-end packaging; if the demand is simple, single-layer Tubes can also be selected. The tube diameters cover a variety of specifications from 13# to 60#. After selecting a specific diameter, different capacities can be indicated by adjusting the length, and the capacity range can be flexibly adjusted from 3ml to 360ml. To ensure an attractive and coordinated appearance, diameters below 35# are commonly used for capacities below 60ml, diameters from 35# to 45# are usually selected for 100ml and 150ml, and diameters above 45# are required for capacities above 150ml.

Core Features

1. It has excellent flexibility, extensibility and impact resistance, as well as good chemical stability, but poor barrier property. The contents are easy to oxidize, so it is suitable for the packaging of mild cosmetics such as facial cleanser, hand cream and facial mask.
2. It has high cost performance and is suitable for the packaging of regular cosmetics and trial products.

II. Five-Layer PE+EVOH Barrier Tubes

The five-layer tube is composed of an outer layer, an inner layer, two adhesive layers and an additional barrier layer (EVOH material). It features excellent gas barrier performance, which can effectively prevent the infiltration of oxygen and odorous gases, and simultaneously prevent the leakage of the fragrance and active components of the contents.

Core Features

1. Compared with double-layer Tubes, it has better gas barrier property and stronger toughness, which can effectively prevent the infiltration of oxygen and the leakage of the fragrance and active components of the contents. It is suitable for the packaging of functional products such as sunscreen, hair removal cream, and acne and freckle removal products.
2. The price is 0.05-0.3 yuan higher than that of double-layer Tubes.

III. How to Distinguish Between Five-Layer Tubes and Double-Layer Tubes?

There are three methods to distinguish between double-layer Tubes and composite Tubes (five-layer Tubes):

1. Cut the tube open and apply iodine to the tube end; the one with visible layers is the composite tube (five-layer tube).
2. Cut the tube open and burn the tube end with a small flame; the one with visible layers is the composite tube (five-layer tube).
3. Cut the tube open; the one with a transparent layer in the middle is the composite tube (five-layer tube).