There are many materials for making straws, including PE and PP, stainless steel, glass, as well as food environmentally friendly paper and polylactic acid straws. Therefore, according to the material classification, there are plastic straws, paper straws, PLA biodegradable straws, stainless steel straws, glass straws etc.
1. Polylactic acid (PLA) straw
The PLA straw uses lactic acid, a renewable plant resource, as its raw material. It has the advantages of renewable, fully degradable and bio-safety materials. It is a project developed on the basis of traditional polypropylene (PP) straws in recent years. The production process is simple and the production cycle is short. It adopts a one-time extrusion molding process. With the help of the extrusion effect of the screw, the PLA particles heated and melted under the pressure of the die are extruded through the die and cut into various shapes after being cooled and shaped by a water tank. Various specifications of straws.
The PLA straw has good biodegradability, degrades to produce CO2 and H2O, does not pollute the environment, and can meet the needs of industrial composting. The straw extruded at high temperature has good thermal stability and good solvent resistance. Its product gloss, transparency, and hand feel can replace petroleum-based products. The physical and chemical indicators of the product can meet the food safety regulations of various places. Require. Therefore, it has a wide range of applications and can basically meet the needs of most beverages on the market.
PLA straw has good moisture resistance and airtightness. It is stable at room temperature, but will automatically decompose when the temperature is higher than 45°C or under the action of oxygen and microorganisms. Pay special attention to the temperature during the transportation and storage of the product. Long-term high temperature will cause deformation of the PLA straw.
Due to the limitation of the properties of the raw materials, the PLA straw cannot be used for hot drinks during use. It is more suitable for cold drinks. I believe that in the future, the continuous improvement and innovation of technology will gradually develop straw products that are resistant to high temperatures and environmentally friendly.
2, paper straws
The paper straw uses food-grade virgin wood pulp paper as the main raw material, and its production process is processed by three or four-layer food-grade raw paper glue, roll tube, slitting, drying and other steps. During the molding process, you need to pay attention to factors such as machine speed and glue volume, and adjust the straw diameter through the size of the mandrel. The entire production process of paper straws is relatively simple and easy to mass produce.
However, the price of paper straws is higher, and the user experience needs to be optimized. It is necessary to use paper and adhesives that meet the food safety requirements. If it is a paper straw with a printed pattern, the food safety of the ink is also required to meet the requirements, because they all need to be in direct contact with food, and the food safety performance of the product must be ensured. At the same time, it must be suitable for many beverages on the market. Many paper straws will soften and open when they come into contact with higher-temperature beverages or acidic beverages. These are issues that we need to pay attention to.
3, rice straws
Starch straws are produced using natural crop starches such as wheat, rice, corn, cassava, potatoes, etc. as the main raw materials. After extensive verification and testing, they can meet the needs of contacting different beverages and dairy liquids. The starch straw will not melt when in use, is edible, does not cause pollution, and can achieve the purpose of environmental protection. The production process of starch straws abandons the traditional straw production method and creates a brand-new production method. The entire production line is formed by mixing raw materials → high temperature extrusion → cutting and forming → hot air drying → sterilization and packaging, which can achieve automation and large-scale production.
The starch straws extruded at high temperature have good water resistance. Unlike paper straws, they are not as easy to soak and become soft. They can maintain their basic shape for 2 hours in cold drinks. However, the hardness will still decrease after long-term soaking, so it is recommended to shorten the use time as much as possible during use and avoid prolonged soaking. The shelf life of starch straws can be up to 2 years when stored in a cool, dry and dark place.
4. Reusable straws: glass straws, stainless steel straws
In addition to the above-mentioned degradable straws, there are also reusable glass straws and stainless steel straws that are also the best alternatives to plastic straws.
Glass straw: It is made of high borosilicate glass. The product has a clear and transparent appearance, is clean and easy to clean. It is resistant to cold and heat. It can be used whether it is juice, milk tea or hot coffee. The upper and lower ports of the straw will not be polished after polishing. Scratches the user, whether it is the elderly or children can use it with confidence.
Stainless steel straws: made of food contact grade materials. The metal material on the surface of the stainless steel straws will not harm human health. The product has a beautiful appearance and can be used repeatedly. It reflects the concept of environmental protection. The glass and stainless steel straws are harder than metal and glass when they are sucked. Do not bite and play, especially pay attention to safety during use, there is a risk of accidental injury.
For reusable straws, cleaning and disinfection is the top priority. In order to solve this problem, each package is equipped with a straw brush with a specially cleaned straw for cleaning and disinfection.
5. Plant straws: bamboo straws
Bamboo straw: It is made of original ecological bamboo. The bamboo stems are physically polished and cut, and the color is smooth and beautiful. The bamboo raw materials have been drained and baked, and there will be no breaks or water leakage during use. condition. After use, it can be cleaned with water and can be used multiple times.
As a professional straw manufacturer, we can customize any style of straw as your requirement. Please kindly contact us for getting more customized information.